Programme National de Planétologie (PNP)

Détails: 8 mars 2021

1) Service aux Utilisateurs du VLTI
Chères et chers collègues,

Avec la reprise des observations au VLT faisant suite à la fermeture de l'observatoire due à la crise sanitaire, nous souhaitons vous rappeler l'existence du Service National d'Observation SUV (Service aux Utilisateurs du VLTI) : http://www.jmmc.fr/suv
SUV fournit un service d'assistance complet à toute personne désirant utiliser ou utilisant actuellement les instruments de seconde génération du VLTI, GRAVITY et MATISSE. Cette assistance consiste en une aide individualisée couvrant la préparation des propositions d'observations et des observations, et le traitement des données. Elle inclut également une aide à l'utilisation des outils d'ajustement de modèles et de reconstruction d'image du JMMC (Jean-Marie Mariotti Center).
SUV dispose d'un serveur de calcul centralisé, installé à l'OCA, sur lequel vos données GRAVITY et MATISSE pourront être traitées dans le cadre de réunions en face à face ou à distance avec les membres du SUV.

En vous souhaitant une excellente année 2021, riche en projets d'observations avec le VLTI,

Pour l'équipe SUV,

Alexis Matter

Contact: Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

2) Ecole Evry Schatzman 2021 du PNPS: Formation et caractérisation des exosystèmes avec SPIRou

La prochaine édition de l’Ecole Evry Schatzman 2021 du PNPS est toujours maintenue (3-8 octobre 2021 à Roscoff) et les pré-inscriptions sont ouvertes jusqu'au 31 mars. Contactez-nous par email pour nous faire savoir vos intentions de participer (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.), la jauge étant limitée à environ 40 participants. Merci!

site web: https://ees21.sciencesconf.org

3) 2021 Summer School at Les Houches on "Core-Mantle Interactions through time" - application deadline: March 15, 2021

This interdisciplinary 4 week summer school (June 28-July 23, 2021) follows the style of the CIDER program with two weeks of formal lectures and tutorials and two weeks of work in small groups on interdisciplinary research projects, for which the topics will be chosen by brainstorming during the first two weeks. This program is open to advanced graduate students and post-docs. Faculty-level researchers are welcome to apply for shorter, two-week, stays.

To find out more and apply : https://coremantlehouches.github.io/

Application Deadline: March 15th, 2021
questions: Barbara Romanowicz (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.) or Stephane Labrosse (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.)
**The school will only take place if the COVID-19 situation allows it**

4) Japan Geoscience Union Meeting 2021
JpGU-EGU-AGU Joint Session
P-PS02: Recent advances of Venus science and coming decades

Online Oral session; Thu. June 3, 2021 AM-PM
Online Poster session: Thu. June 3, 2021 PM
Session language: English

Dear colleagues,

We would like to invite you to submit an abstract to Session P-PS02: Recent advances of Venus science and coming decades, at the JpGU Meeting to be held on-site at Pacifico Yokohama North (Yokohama City) from Sun. May 30 to Tue. June 1, 2021; and online from Thu. June 3 to Sun. June 6, 2021.

This session welcomes presentations on all aspect of the Venus system including interior, surface, atmosphere and ionosphere. We welcome presentations based on past or current observations, theory and modelling, as well as presentations related to future instruments and missions including the ESA-NASA proposed EnVision Venus orbiter and NASA Discovery Venus missions.

More information about the session::
http://www.jpgu.org/meeting_e2021/sessionlist_en/detail/P-PS02.html

A link to abstract submission:
http://www.jpgu.org/meeting_e2021/presentation.php

Abstract submission deadline is Thu. February 18, 5pm JST (UTC+9), 09:00 CET (UTC+1). Please note that the abstracts without abstract fees processed by the final deadline of February 18 5pm JST are automatically canceled.

We are looking forward to welcoming you at the session!

The Conveners
Takehiko Satoh, Thomas Widemann, Kevin McGouldrick, Hideo Sagawa

5) AOGS2021 VIRTUAL, 18th annual meeting 01-06 August 2021
PS06 on “Microwave and Infrared Remote Sensing of Solar System Objects”

This session will address all aspects of investigations of the terrestrial and other atmospheres in the solar system and beyond as well as surface properties of solar system bodies, using remote sensing techniques in the cm, mm, submm and infrared wavelengths range. This includes new ground-based, air- and space borne instrument developments, development proposals and related topics (i.e. frontends, backends, receivers, spectrometers, interferometers, components, mechanisms, concepts, calibration, the baseline problem, etc.), radiative transfer and retrieval simulations, new observations (Earth, planets, comets, moons, asteroids, KBOs, etc. from the ground, airborne and space borne), their validation, analysis and interpretation (e.g. atmospheric dynamics, chemistry and evolution, surface mineralogy, thermo-physical properties, regolith studies etc.).

For details on the AOGS Meeting and abstract submission, please visit

https://www.asiaoceania.org/aogs2021/public.asp?page=home.html
https://www.asiaoceania.org/aogs2021/public.asp?page=important_dates.asp
https://www.asiaoceania.org/aogs2021/public.asp?page=abstract_submission.asp

Please note that the deadline for the receipt of abstracts is: 23 February 2021.

We hope that you can accept our invitation and look forward to meet you at the 18th AOGS2021 virtual sessions.

With best regards,

The PS06 conveners

Paul Hartogh, Scott Bolton, Yasuko Kasai and Yi-Jehng Kuan

----------------

PS07 “Small platforms for planetary exploration: missions and technologies”

Abstract submission deadline: Feb. 23, 2021

Dear colleague,

Planetary exploration currently experiences a spectacular, fast development of missions focusing on the in situ investigation of extreme planetary and small bodies environments, and/or requiring multiple platforms to fulfill their scientific objectives. With this trend, more and more planetary missions will, either be based on a stand-alone small platform, or combine a main interplanetary carrier with one or several small platforms that will be tailored to the needs of surviving and conducting science operations in these challenging environments. Recent examples are the MASCOT small lander on board JAXA’s Hayabusa-2, and the drone of NASA’s DragonFly mission to Titan.

This session will review the current trends in this major evolution, connecting the science objectives that can or need to be addressed by small platforms with the technologies, at the instrument and platform levels, that need to be developed to fly these missions. Among other subjects, it welcomes submissions addressing the following themes:

·        Typical scientific missions and scientific instruments for planetary missions with small platforms;
·        Advanced small platforms for extreme environments ;
·        Advanced propulsion and power;
·        Autonomous operation and decision-making technologies;
·        Swarm formation and communication;
·        Piggyback launch and On-orbit deployment
All accepted submissions will be kindly invited to publish their communication in a special issue of “Space: Science and Technology”, an Open Access, Science Partner Journal (https://spj.sciencemag.org/journals/space/). Submission deadline will be two months after the AOGS meeting, i.e. Oct. 31st, 2021

We are looking forward to receiving your abstracts and to your active participation!

Best wishes,

Michel Blanc, John Baker, Pierre Bousquet, Linli Guo, Steve Vance, Hajime Yano

PS07 session conveners

Session conveners :

Michel Blanc, IRAP, France (main convener): Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

John Baker, JPL, USA: Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

Pierre Bousquet, CNES, France: Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

Linli Guo, DHFSat, China: Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

Hajime Yano, JAXA, Japan : Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

6) PhD Position on Uranus at KTH University, Sweden

I am looking now for a PhD student to work on Uranus and Lyman-alpha: https://www.kth.se/en/om/work-at-kth/lediga-jobb/what:job/jobID:378811/type:job/where:4/apply:1.
You get full salary of about 3000+ Eur as PhD student in Sweden and the Phd period 4 years long (including some course work). Please pass this on and send me all your smart students!

Best regards,
Lorenz

7) PhD Position at Reims, France | Methane cycle: from CASSINI observations to DRAGONFLY exploration

Nous proposons un sujet de thèse avec un financement CNES/Region Grand Est en cours
d'évaluation. Le projet concerne l'étude du cycle du méthane et des autres cycles
(brume, nuages, autres gaz mineurs) sur Titan avec un modèle de circulation général
(GCM-IPSL 3D).

Le sujet détaillé et le lien vers l'application peuvent être trouvé ici :

https://recrutement.cnes.fr/en/annonce/1099977-065-methane-cycle-from-cassini-observations-to-dragonfly-exploration-51100-reims

Contact : Pascal Rannou
Groupe de Spectrométrie Moléculaire et Atmosphérique - (GSMA)
Université Reims Champagne-Ardenne 51687 REIMS
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8) Two postdoc positions on Exoplanets at IAC

Dear colleagues,

At IAC we are announcing two 2-year postdoc positions in exoplanet research, in case they are of interest to anyone in the list.

- PD Exoplanetas y Astrobiologia I 2021 (PDS-2021-006)

https://www.iac.es/en/employment/un-contrato-postdoctoral-exoplanetas-y-astrobiologia-i-2021one-postdoctoral-contract-exoplanets-y-astrobiology

- PD Exoplanetas y Astrobiologia II 2021 (PS-2020-007)

https://www.iac.es/en/employment/un-contrato-postdoctoral-exoplanetas-y-astrobiologia-ii-2021one-postdoctoral-contract-exoplanets-y-astrobiology

Best,

Enric

9) Job opportunities in Luleå University of Technology, Sweden

Luleå University of Technology has a number of job opportunities in planetary science at its Space Campus in Kiruna, Sweden:
Specifically, we have just released vacancy notices for one senior lecturer, one associate senior lecturer (equivalent to lecturer in the UK) and a postdoc.
You can find the vacancy notices here:

365-2021: https://www.ltu.se/ltu/Lediga-jobb?l=en&rmpage=job&rmjob=4396&rmlang=UK
366-2021: https://www.ltu.se/ltu/Lediga-jobb?l=en&rmpage=job&rmjob=4398&rmlang=UK
364-2021: https://www.ltu.se/ltu/Lediga-jobb?l=en&rmpage=job&rmjob=4400&rmlang=UK

10) Postdoctoral Fellow in Radiative Transfer Modeling in Planetary Atmospheres | LPI, USA

The Lunar and Planetary Institute (LPI), run by the Universities Space Research Association (USRA), invites applications for a Postdoctoral Fellow in Radiative Transfer Modeling in Planetary Atmospheres.

Full job ad at http://bit.ly/LPIPostDoc
A summary of the position can be found below:

Postdoctoral Fellow in Radiative Transfer Modeling in Planetary Atmospheres.
The selected candidate will join Dr. Germán Martínez’ group on the Mars Environmental Dynamics Analyzer (MEDA) science team of NASA’s Mars 2020 mission, and will lead analyses of measurements made by the Thermal Infrared Sensor (TIRS), one of the six environmental sensors comprising MEDA.
Applicants should have a recent Ph.D. in Planetary Science, Physics, or a related field.
The selected candidate will contribute to the development of a numerical model capable of spectrally simulating longwave radiation fluxes at the Martian surface to maximize the scientific return of TIRS’ measurements, in particular of the downward thermal infrared radiation at the surface (i.e., the atmospheric thermal forcing). The selected candidate will lead their own investigations, as well as collaborate with others within Dr. Martínez’ group. Required expertise includes proficiency in a common radiative-transfer programming language (e.g., IDL, MATLAB, Fortran), and a publication record in relevant or similar studies. Previous experience with Mars-related research is preferred, but not required.
The position is for two years with a possible one-year extension.

11) Post-Doc on Mars research at IAA-CSIC, Granada, Spain
Starting date: Spring-Summer 2021
Post-Doc Profile: PhD on Physics, Planetary Sciences, Atmospheric Sciences or related field. Experience in atmospheric modeling and/or use of Global Climate Models desirable.
Deadline: Applications review will start February 8, and continue until the position is filled.
More information: Contact the project IP (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.), see details below.

The Solar System Department of the Instituto de Astrofísica de Andalucía (IAA- CSIC, Granada, Spain) is searching for a postdoctoral research scientist to work on the simulation of the upper atmosphere (thermosphere/ionosphere) of ancient Mars. The candidate will work in the adaptation of an state-of-the-art Global Climate Model in order to simulate the behavior of the upper atmosphere under different orbital configurations typical of past Mars conditions. Special focus will be put on simulating the effects of the orbital configuration on the escape of Hydrogen from the atmosphere, and on the implications for the climate history of the planet.
The successful candidate will work in collaboration with Dr. Francisco González- Galindo and other members of the Group of Atmospheres of the Terrestrial Planets (GAPT, http://gapt.iaa.es) of the IAA-CSIC. The GAPT group is actively involved in the Mars Express and ExoMars Trace Gas Orbiter missions, and participates in the development of the LMD Mars Global Climate Model. GAPT group members are also involved in the study of the terrestrial upper atmosphere and of exoplanetary atmospheres. The Instituto de Astrofísica de Andalucía (https://www.iaa.csic.es) is a leading research center in Astronomy of the Spanish National Research Council (CSIC), and owns the distinction "Center of Excellence in Research" of the Spanish Severo Ochoa Program. Cooperation with researchers from the LMD and LATMOS laboratories in Paris (https://www.lmd.jussieu.fr/ and https://www.latmos.ipsl.fr/) is also to be expected.

To apply please send 1 single PDF file with a cover letter indicating motivation and a CV with publication record and a list of up to three professional references to: Francisco Gonzalez-Galindo IAA/CSIC, Granada, Spain Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

12) Thèse, HDR, Séminaires, Cours en ligne

a) Météorites et origine de l’eau sur la Terre – Webinaire de la Société Française d’Exobiologie le jeudi 11 Mars à 17h
La Société Française d’Exobiologie vous invite à un nouveau webinaire qui aura lieu le jeudi 11 Mars à 17h. A cette occasion, Laurette Piani, Chargée de recherche CNRS au Centre de Recherches Pétrographiques et Géochimiques de Nancy (CRPG), nous parlera des météorites et de l’origine de l’eau sur Terre.

Météorites et origine de l’eau sur la Terre

La Terre est la seule planète connue à posséder de l’eau liquide à sa surface, une caractéristique fondamentale pour l’apparition et le développement de la vie sur notre planète. Mais cette eau était-elle présente dès l’origine dans les roches qui ont formé notre planète ? A-t-elle été apportée plus tard par des astéroïdes et comètes ayant bombardé la Terre ? Ou est-elle un mélange de ces deux sources ?

Au cours de ma présentation, je vous parlerai des travaux récents réalisés par notre équipe sur des météorites de composition analogue à celle de la Terre, les chondrites à enstatite. Nos mesures montrent, contrairement à ce qui était supposé auparavant, que les chondrites à enstatite possèdent des quantités non-négligeables d’hydrogène avec un rapport isotopique coïncidant avec celui de la Terre. Elles pourraient ainsi expliquer la totalité de l’eau contenue dans le manteau de la Terre et une partie de l’eau des océans.

Inscription obligatoire :

https://zoom.us/meeting/register/tJAod-yrqT4jG9Bs66THN2ihf98O23ZGAQ9a

Après votre inscription, vous recevrez un e-mail de confirmation contenant les instructions pour rejoindre la réunion.

b) Soutenance de HDR de Sandrine Vinatier

Sandrine Vinatier a soutenu sa HDR le vendredi 12 février « Étude des couplages et des changements saisonniers dans la moyenne atmosphère de Titan ». La vidéo est disponible sur la chaîne You Tube du LESIA. https://www.youtube.com/watch?v=ETtCHHZru5c
Résumé

Je présenterai mes travaux de recherche de 2008 à 2020 qui ont principalement porté sur l’étude du fonctionnement de l’atmosphère de Titan et en particulier sur les couplages entre chimie, microphysique, forçage radiatif et dynamique ainsi que leurs changements saisonniers dans la moyenne atmosphère. La compréhension de ces phénomènes nécessite d’analyser des données présentant des très bonnes résolutions spatiales et temporelles. Les meilleures données disponibles pour atteindre cet objectif sont celles qui ont été acquises par le spectromètre Composite Infrared Spectrometer (CIRS) à bord de la sonde Cassini de 2004 à 2017, soit du premier tiers de l’hiver nord au tout début de l’été sur Titan. J’ai contribué à l’étude de ces couplages principalement grâce à l’analyse de ces données mais également en collaborant avec les modélisateurs et en participant à l’interprétation quantitative des observations.

Après avoir présenté le contexte scientifique, je détaillerai la méthode d’analyse des données du spectromètre CIRS. Je présenterai ensuite mes travaux sur la détermination de la composition et de l’impact radiatif des aérosols photochimiques qui jouent un rôle prépondérant dans le bilan radiatif de l’atmosphère. En effet, étant omniprésents dans l’atmosphère, ils absorbent le rayonnement solaire et émettent en infrarouge thermique, impactant ainsi fortement la température atmosphérique. J’aborderai ensuite l’évolution du champ de température et des abondances d’espèces photochimiques dont les variations saisonnières sont fortement influencées par celles de la dynamique atmosphérique. Je parlerai de l’apparition, de la composition et de la structure du nuage stratosphérique polaire massif observé à partir de la seconde moitié de l’automne sud et directement lié aux faibles température et forts enrichissements moléculaires au sein du vortex polaire. Enfin, je montrerai comment l’évolution de ce vortex polaire à la fin de l’automne sud a impacté les champs d’abondance des espèces photochimiques. L’interprétation quantitative des observations et la compréhension globale d’une atmosphère aussi complexe que celle de Titan ne peut se faire qu’en étroite collaboration avec de nombreuses équipes qui étudient différents aspects de cette atmosphère, ces collaborations seront mentionnées à la fin de la présentation.

Détails: 8 mars 2021

1) Journée "Préparation aux retours d'échantillons extra-terrestres" | Présentations

Merci à toutes et à tous pour votre participation et vos présentations. Ce fut une journée très intéressante. La première action est mise en place, puisque sous l'impulsion de Francis et Morby un groupe curation MMX se constitue.

Les présentations sont disponibles au lien suivant: https://zendto.obspm.fr/pickup?claimID=64Mw4QU5hcZDr6YN&claimPasscode=idb7vXMxpPqKP8Dp

2) 2021 SKA science meeting | fully virtual event | 15-19 March 2021
Dear Colleagues,

We are very pleased to announce that registration for the 2021 SKA science meeting, entitled “A precursor view of the SKA sky” is now open via the conference website.

In the year that marks the establishment of the SKA Observatory, as well as the start of SKA construction activities, we want to bring the focus to science with the new and exciting results that are being produced by the SKA precursors and pathfinders and their implication for SKA.

The conference will be a fully virtual event, to be held on 15-19 March 2021. This new virtual format will allow us to welcome participation across all time zones.

Our conference will include plenary sessions organised by the SOC, as well as splinter sessions organised independently by the Science Working Groups.

The registration fee will be £40 per person (£20 for students).

Please circulate this announcement to your colleagues and note the following dates concerning the meeting:

Abstract submission opens: 18 Dec 2020

Abstract submission closes: 20 Jan 2021

Abstract selection complete: 15 Feb 2021

Registration Opens: 19 Jan 2021

Conference starts: 15 March 2021

Conference ends: 19 March 2021

The SOC and LOC Events Team

3) EAS 2021 | Virtual meeting | 28 June – 2 July 2021
The European Astronomical Society (EAS) is pleased to announce the opening of the Abstract Submission and the Registration for EAS 2021.

This year again, the EAS 2021 will be virtual due to the remaining uncertainties surrounding the Covid-19 pandemic. The success of the virtual EAS 2020 encourages us to choose that format and we count on your participation, and expertise to make EAS 2021 an unprecedented event.

Once again, the Scientific Organising Committee has made a significant effort to select a wide range of Symposia, Special Sessions and Lunch Sessions, covering nearly all fields of Astronomy and Astrophysics as well as cutting-edge topics.

The registration fee has been set to allow the EAS to organise its meetings at a sustainable level while being affordable for most participants, especially considering that there will be no travel and accommodation costs. The EAS provides a generous number of fee waivers for those colleagues who need support. Moreover, students can apply for a position in the volunteer program, which waives fees in exchange for help in the meeting organisation. Further information is given on EAS 2021 website.

For more information on the full programme please visit the EAS 2021 website.
Submission deadline: 02 March 2021

We are looking forward to counting on your participation and receiving your abstract submission and registration.

Best regards,

EAS 2021 Secretariat
Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser. - EAS 2021

4) Postdoctoral Associate positions on exoplanet atmosphere modelling at the University of Geneva

Applications are invited for two Postdoctoral Associate positions at the Department of Astronomy of the University of Geneva, working on exoplanet atmospheres in the research group led by Dr. Vincent Bourrier. The two positions are fully funded on the ERC project SPICE DUNE (SpectroPhotometric Inquiry of Close-in Exoplanets around the Desert to Understand their Nature and Evolution), with an initial duration of two years and a possible extension for a third year, depending on performance.

Position 1 is focused on developing models of upper atmospheres for hot gas-dominated planets. The main goal is the interpretation and prediction of atmospheric escape signatures in high-resolution spectroscopic data. The successful applicant will work with available HST ultraviolet data, ground-based visible and near-infrared data, and will have access to Guaranteed Time Observations of the NIRPS spectrograph (ESO/VLT), in which the Department of Astronomy is deeply involved.

Position 2 is focused on the study of ultra-short period (USP) small rocky planets. The successful applicant will mainly work on the development of models describing the envelope structure and escape from these objects. They will further collaborate with local experts to improve internal structure models for USP rocky planets, and to develop dedicated tools to search for and analyze their signatures in space-based photometry. The University of Geneva hosts the CHEOPS Science Operations Centre and the mission Project Science Office, and the successful applicant will contribute to the interpretation of CHEOPS data.

Setting: The Geneva Observatory offers one of the most vibrant environments worldwide for exoplanet research. The exoplanet team (www.exoplanets.ch) counts over 50 members, currently including 10 faculty members, 12 postdoctoral researchers, 15 PhD students, and 14 project staff members. Research topics include exoplanet detection and characterisation (atmospheres, interiors), planetary system dynamics, and instrumentation. Team members are directly involved in a large number of projects, including photometric instruments (CHEOPS, NGTS, TESS, PLATO), high-resolution spectrographs (ESPRESSO, NIRPS, HARPS, and others), direct imaging (SPHERE@VLT) and astrometry (GAIA). The exoplanet team is also part of PlanetS (www.nccr-planets.ch), a Swiss research network focused on exoplanetary science, which includes ~130 scientists from the Universities of Geneva, Bern, Zurich and the Swiss Federal Institute of Technology in Zurich (ETHZ). The successful applicants will be able to take advantage of this unique collaborative framework. The University of Geneva is an equal opportunity employer committed to diversity.

Start date: is flexible, with a targeted start in September 2021 but no later than December 2021.

Salary: ~81,000 CHF/year gross salary, according to rules of the University and Canton of Geneva.

Deadline: Applications received until 14 March 2021 will receive full consideration. Later applications will be reviewed until the positions are filled.

Requirements: A PhD degree in astrophysics or in any of the fields related to the proposed topics, completed by the start of the position. For both positions, expertise in exoplanets, atmospheric modeling, and radiative transfer codes is desired. Experience in particle and/or hydrodynamical codes, as well as photochemistry, would be a plus. Additional knowledge in high-resolution transmission spectroscopy (for position 1), and in dust physics/opacity, time-series photometry, interior models (for position 2) would also be valued. The successful applicants will become part of an active team with a wide range of expertises. We especially look for team players with a high level of autonomy and scientific creativity.

Any inquiries can be emailed to Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.. The following application materials should be sent to this address in a single PDF:
- A curriculum vitae (2 pages).
- A cover letter (1 page), indicating which position the application refers to.
- A short research statement describing past achievements and future projects (max. 2 pages)
- A list of publications
Two letters of recommendation should be sent directly to Dr. Vincent Bourrier by the referees themselves.

5) Post-Doctorat: Caractérisation minéralogique et spectroscopique des échantillons de la mission Hayabusa2 | IMPMC | Sorbonne Université & MNHN

Missions :

La mission Hayabusa2 a effectué deux prélèvements d'échantillons à la surface d'un astéroïde de classe C (Ryugu), qui ont été retournés sur Terre fin 2020. L’IMPMC-MNHN et l'IAS sont en première ligne dans l'analyse des grains de Ryugu, grâce aux analyses de spectroscopie Mössbauer et µ-tomographie FTIR sur synchrotron. Le post-doc aura pour objectif l'étude de la composition des grains de Ryugu, en particulier des interactions entre phases minérales hydratées et organiques. L'étude combinée entre les données Mossbauer et IR permettra de retracer l'histoire de Ryugu, d'élucider le rôle joué par les processus d'altération (aqueuse et/ou thermique et/ou par irradiation) et de relier les tendances spectroscopiques observées de l'échelle macro jusqu'aux microns à des modifications physico-chimiques de la matière primitive.

Activités :

Pendant ce post-doc, le/la scientifique junior sera en premier lieu impliqué.e dans l’inter-calibration de ces deux techniques pendant la période de préparation du consortium international et en reposant ses analyses sur des analogues naturels et expérimentaux. Cette tâche s’étendra a minima jusqu’à l’été 2021 et probablement au-delà. Plus spécifiquement, le/la post-doctorant.e aura la responsabilité d’analyser de manière coordonnée et exhaustive des analogues minéraux (essentiellement des minéraux argileux, des serpentines, des silicates hydratés et des oxydes de fer) soumis à des recuits dans des conditions variées de rédox et de température ainsi que des échantillons soumis à des irradiations de basse énergie réalisées sur Sidonie (CSNSM). Ces échantillons serviront de cadre interprétatif aux résultats collectés ultérieurement sur les vrais échantillons Hayabusa2 lors de la seconde partie de l’année 2021 et en 2022.
La personne sélectionnée présentera ses travaux dans les meetings du groupe ‘Min-Pet’ en charge de l’analyse minéralogique de ces échantillons extraterrestres se tenant de manière mensuelle. A partir de la seconde moitié de 2021, les analyses non-destructives des échantillons ramenés par la sonde débuteront pour une durée d’un an environ et seront réalisés en coordination avec les deux équipes impliquées ici. La localisation principale de ce post-doc sera l’IMPMC. Le/la scientifique participera physiquement à l’analyse des échantillons à l’APS, Chicago et à SOLEIL, Saclay. Ces sessions sont planifiées au moins jusqu’en Novembre 2021. Il/elle sera une personne clé et participera à l’effort de cimentation des équipes impliquées. Le/la candidat.e devra être spécialisé.e dans la formation et l’évolution des minéraux hydratées et argileux et dans la caractérisation des processus secondaires. Il/elle pourra en outre développer sa propre expertise en ancrant ses conclusions sur les calibrations expérimentales effectuées auparavant pendant le postdoctorat.

Compétences attendues:
•    Expertise en physique et chimie des minéraux.
•    Expertise dans les méthodes spectroscopiques incluant si possible la FTIR, la spectroscopie Mössbauer et la diffraction des rayons X. Une forte expérience des analyses sur ligne de lumière synchrotron est hautement souhaitable.
•    Expertise en caractérisation des minéraux argileux, hydratés et ferrifères ainsi que sur les oxydes et minéraux de basse températures.
•    Habilité à élaborer et réaliser des expériences en laboratoire afin de simuler les conditions astéroïdales de formation de ces minéraux de basse température à partir d’analogues simples et complexes.
•    Habilité à conduire des recherches de manière autonome.
•    Mobilité et adaptabilité permettant de participer à des sessions synchrotron en Europe et ailleurs.
•    Aisance à travailler en équipe.
•    Capacité à écrire et s’exprimer clairement en français et/ou en anglais.
•    Créativité.

Contexte de travail:

La personne recrutée intègrera l’Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, unité mixte de recherche en cotutelle entre le Centre National de la Recherche Scientifique (CNRS), Sorbonne Université et le Muséum National d’Histoire Naturelle à Paris. L’IMPMC est un institut pluridisciplinaire de physique, de sciences de la Terre et de biophysique-bioinformatique. La personne recrutée participera à la dynamique scientifique de l'équipe COSMO. En outre, elle travaillera sur le couplage des mesures Mössbauer avec les analyses FTIR / Raman en interagissant avec le groupe «Astrochimie et Origines» de l'IAS qui fait également partie de l'équipe d'analyse d'Hayabusa2 “Min-Pet of coarse grains”. Le post-doc collaborera avec les scientifiques de l'IAS sur l'imagerie hyper-spectrale IR & Raman et la microtomographie FTIR des grains de Ryugu, réalisées sur la ligne de lumière SMIS du synchrotron SOLEIL (temps garanti). Ce contrat postdoctoral est financé par le DIM ACAV+ (PI Mathieu Roskosz, CoI Rosario Brunetto). Il est intégralement dédié à l’analyse de cette matière extraterrestre unique. Bien que des projets périphériques ne soient pas exclus d’office, seuls les projets permettant une meilleure compréhension ou une meilleure caractérisation des échantillons Hayabusa2 seront soutenus.

6) PhD positions in exoplanetary science at Observatoire de Paris/Université Grenoble Alpes

In the framework of the COBREX ERC-funded project, we are opening 4 PhDs positions, to work in the vibrant domain of exoplanetary science. Two PhDs will work on the direct (high contrast imaging) detection and characterisation of exoplanets, one on the detection (high contrast imaging) and characterisation of planetary disks, and one on the study of thermal evolution and internal structure of exoplanets.

The PhDs will take place at LESIA (Observatoire de Paris) and/or IPAG (Grenoble). LESIA and IPAG have a long standing history of close scientific collaborations and instrumental developments in connexion with exoplanet science, such as VLT/NACO, VLT/SPHERE, CFHT/SPIROU, VLTI/PIONNIER, VLTI/Gravity, and are involved in particular in the developments of various projects such as SPHERE+, JWST, Nancy Grace Roman Telescopes, ELT/MICADO and ELT/HARMONI.
Both LESIA and IPAG offer a dynamic work environment in particular in the exoplanet field, in the solar system field, as well as in high contrast imaging instrumentation.

The PhDs are expected to start around summer 2021 with possible adjustments possible on the starting date upon request.

French PhD positions are fully funded for 3 years and require candidates to have a master degree. They automatically include state-mandatory benefits (healthcare, vacations, un-employment insurance and parental leaves). No teaching is required, but is possible in addition.

For more details and for application, please use the following links :
https://bit.ly/3i8p71l
https://bit.ly/3oF8Hjk
https://bit.ly/3icTnYK
https://bit.ly/3icTnYK
A first round of selection will be made beginning of February (see individual closing dates of the CNRS offers at the links above). Depending of the outcome, the applications deadlines may be extended.
For more information, pls contact Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

Two post doctoral positions at LESIA will also be opened in the next months.

7) Post-doctorate positions in exoplanetary science at the University of Bristol
Dear Colleagues,

I would like to bring your attention to two postdoctoral positions involving exoplanet detection, formation, and evolution available in the Astro group at the University of Bristol. Please forward to anyone who might be interested and encourage them to apply.

https://www.bristol.ac.uk/jobs/find/details/?jobId=207075&jobTitle=Research%20Associate%20/%20Senior%20Research%20Associate%20%282%20Posts

Thank you,
Zoë

Dr. Zoë M. Leinhardt
Associate Professor and Astrophysics Coordinator
School of Physics
University of Bristol

8) Post-doctorate Position in Millimeter Astronomy at IRAM

Dear colleagues

Thank you to circulate the following announcement for a Postdoc Research Position in Millimeter Astronomy, at IRAM.
Deadline for applications is March 07, 2021.

https://www.iram-institute.org/EN/job-offer.php?id=59

Best regards,

9) NASA Postdoctoral Program in LIBS spectroscopy
Dear all,

I am recruiting in the NASA Postdoctoral Program (NPP) for the March 1 application deadline. I am specifically interested in applicants interested in developing LIBS spectral processing and machine-learning algorithms for supervised classification of laboratory lunar and martian samples and improving quantification of minor and trace elements in planetary mission data (Curiosity and Perseverance). The selected fellow would also have an opportunity to collaborate with the ChemCam and/or Supercam instrument teams. Applications consist of an original research proposal written by the applicant along with letters of recommendation and transcripts, all of which must be received by the March 1 deadline. Interested parties should see the program requirements at https://npp.usra.edu/ and contact Barbara Cohen Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.. Unfortunately, only US citizens and non-citizens who already have permission to work in the US (resident aliens, asylees, etc.) will be permitted to apply to the March 1, 2021 deadline - this limitation is solely due to the current lack of access to US consulates and COVID-related travel restrictions. Please don't hesitate to contact me for more information or questions.

Barbara Cohen

10) Thèse, HDR, Séminaires, Cours en ligne

a) 1er février, 16h | Lucia Mandon | LESIA | The Mars 2020 and ExoMars landing sites from an orbital perspective

Résumé du séminaire:
The exploration of Mars will soon be marked by a historic turning point, with the in situ investigation of two sites of Noachian age, the most primitive era of Mars. The selected landing sites, Jezero crater (Mars 2020 mission, NASA) and Oxia Planum (ExoMars mission, ESA/Roscosmos), exhibit from orbital data evidences for a hydrous past as well as good astrobiological potentials.
This talk will focus on the lessons learned from the geology of these sites and what constrains it can provide on the early history of Mars. In particular, we will present one of the most extensive geological units on the Mars 2020 landing site, the olivine and carbonate unit. We suggest a pyroclastic origin for these deposits and date their emplacement. This age will be useful to help calibrate the Martian chronology in the events of the Mars Sample Return mission. While the ExoMars landing site appears spectrally homogeneous from orbit, we show that there is textural, compositional, and mineralogical diversity at high resolution within the clays present at the site, which are the primary targets of the mission.

https://www.carbonfreeconf.com/join-conference/115/qqI8Uxicn0OnYTbScEiMrH08nIsLve

b) Cours en ligne sur la formation du système solaire généreusement transmis par Alessandro Morbidelli

Bonjour

j'ai préparé un cours enregistré de 3h sur l'Origine du Système solaire pour une école internationale.

L'école étant terminée, j'ai mis ces cours an accès libre, pour ceux qui pourraient être intéressés, sur:
https://lagrange.oca.eu/images/LAGRANGE/pages_perso/morby/LaraSchool-morbidelli-partI.mp4
https://lagrange.oca.eu/images/LAGRANGE/pages_perso/morby/LaraSchool-Morbidelli-PartII.mp4

La première partie concerne les contraintes observationnelles, la deuxième modèles et scénarios.

Cordialement

Alessandro Morbidelli

Détails: 20 janvier 2021

1) Journée "Préparation aux retours d'échantillons extra-terrestres" | 26 janvier 2021 | Inscription & site web

Date limie d'inscription: le 21 janvier 2021. Site web pour s'inscrire : https://echantillons-ht.sciencesconf.org/
La réunion se déroulera entièrement via zoom. Seuls les inscrits recevront le lien.
Chères et chers collègues,

Le CNES et le PNP organise une réunion d'information et de préparation pour la communauté planétologique française au retour des échantillons extra-terrestres qui vont se multiplier dans les prochaines années:

Astéroïdes: HY2, OSIRIS-REX, MMX, ZhengHe
Lune: Shang'e 5 & 6 et projets américains
Mars: Mars Sample Return
Les objectifs de cette réunion sont

Bien cordialement,

Le CS du PNP.

2) ESA Academy's Training Sessions Online
In the first half of 2021, ESA Education Office will continue delivering ESA Academy’s Training Sessions online. Two opportunities are currently open for University students application:

Online Introduction to Space Law Training Course 2021

During this five day online training course, university students will be offered an introductory overview of space law delivered by ESA and external experts: why it is necessary today to regulate space activities and how it applies practically to space missions, from the smallest of projects like a university’s CubeSat project, the most famous feats of space endeavours like human spaceflight and the International Space Station right through to forward-looking questions like planetary defence. By the end of this programme, students will appreciate the importance of law in the realisation of a space mission and they will have an overview of the international legal frameworks which governs the space activity today.
Dates: 1-5 March 2021
Open to: Bachelor, Master or PhD students in an engineering or scientific degree.
Deadline to apply: 22 January 2021

Online Earth Observation Satellite System Design Training Course 2021

During the ten online afternoon sessions, university students will be provided with insights on the entire development of an Earth Observation satellite, from the definition of the initial requirements to the final in-orbit verifications, including risks assessment and ground operations, and with an emphasis on the sizing of the Earth Observation instruments. Taught by current and former ESA experts and external experts, this course will be delivered through formal online lectures, which will be complemented by a group project, where the students will design a simple Earth Observation satellite.
Dates: 22 March-2 April 2021
Open to: Master, or PhD student in an engineering or science degree with a solid mathematics and physics background.
Deadline to apply: 8 February 2021

Please do not hesitate to contact ESA Education Office for any questions and to share this information with your colleagues or on your social media.

Best regards,

ESA Education Office

PS: Interested in ESA Academy's Training Sessions in other domains? Have a look at our portfolio on
https://www.esa.int/Education/ESA_Academy/Portfolio_of_ESA_Academy_training_sessions

3) vEGU 2021 Call for Abstracts | Wednesday, 20 January at 13:00 CET
PS2.1 Atmospheres and exospheres of terrestrial planets, satellites, and exoplanets

Dear colleagues,

I’m pleased to announce that the abstract submission is open for vEGU 2021, held online on 19-30 April 2021.

The deadline for the abstract submission is 20 January 2021, 13:00 CET.

I would like to draw your attention to our session: Atmospheres and exospheres of terrestrial planets, satellites, and exoplanets

"This session primarily focuses on the neutral atmospheres of terrestrial bodies other than the Earth. This includes not only Venus and Mars, but also exoplanets with comparable envelopes and satellites carrying dense atmospheres such as Titan or exospheres such as Ganymede. We welcome contributions dealing with processes affecting the atmospheres of these bodies, from the surface to the exosphere. We invite abstracts concerning observations, both from Earth or from space, modeling and theoretical studies, or laboratory work. Comparative planetology abstracts will be particularly appreciated.”

If you consider submitting an abstract in this session, you can use the following link
https://meetingorganizer.copernicus.org/EGU21/session/39942

Hope to see you online!

Best regards,

The conveners
Arnaud Beth, Arianna Piccialli, Jan Vatant d'Ollone

PS4.3/ST4.4 : PLANETARY SPACE WEATHER

Deadline for abstract submission is Jan 20, 2021, 13:00 CET.

As conveners we would like to invite researchers in the planetary space
weather community and in the planetary environments to submit
abstracts to our session of the virtual conference “vEGU21: Gather Online”

In the present session, we welcome abstracts from all planets’ upstream solar wind activities and their relation to planetary space weather, including especially magnetized bodies (like Mercury, the Earth, Saturn and Jupiter) as well as comparisons with unmagnetized bodies (Mars and Venus).
Since in these years many operative missions have among their science goals the planetary space weather, such as BepiColombo that will have soon two Venus Flybys and then six Mercury flybys, or Solar Orbiter that will have diverse Venus flybys as well, special focus of this session will be on Venus and Mercury and on the possible studies related to multi spacecraft observations.
In this frame, we welcome studies on:
• magnetosphere-ionosphere coupling dynamics (and auroras where present);
• the solar wind interaction with planets and moons
• inter-comparisons of planetary environments;
• observations of space weather effects from space probes and Earth-based instrumentation;
• theoretical modeling and simulations, especially in view of measurement analysis and interpretation;
• potential impacts of space weathering on technological space systems.

For detailed information, see:
https://meetingorganizer.copernicus.org/EGU21/session/39947

Conveners: Philippe Garnier, Markus Franz, Anna Milillo, Zhonghua Yao

4) Postdoctoral Position in Moon-Plasma Interactions | University of Iowa
The Department of Physics and Astronomy at the University of Iowa is searching for a postdoctoral research scientist to work with THEMIS-ARTEMIS data to study the interaction of plasma with the Earth's Moon in the solar wind and terrestrial magnetosphere. The successful candidate will work in collaboration with Prof. Jasper Halekas and other group members at the University of Iowa, as well as other researchers from the THEMIS-ARTEMIS team. More details and application instructions are available at (http://physics.uiowa.edu/~jhalekas/Moon-Plasma-Postdoc.html). Please contact Prof. Halekas (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.) with any questions about the position.

5) Postdoctoral Near-field VLBI Support Scientist | JIVE, Dwingeloo, The Netherlands

JIVE, the Joint Institute for VLBI ERIC, is the central organisation of the European VLBI Network (EVN). The EVN is an interferometric array of radio telescopes spread throughout Europe, extending into Asia, Africa, and Puerto Rico, and often observes in conjunction with the e-MERLIN interferometer in the UK, the East Asia VLBI Network (EAVN), the Long Baseline Network (LBA) in the Southern hemisphere, and the VLBA and other telescopes in the USA. JIVE implements the core data processing and user services that turn the network of distributed telescopes into a single scientific facility to study the radio sky at the highest possible resolution. The Institute is located in Dwingeloo, the Netherlands, and is hosted by ASTRON - the Netherlands Institute for Radio Astronomy.
JIVE is a European Research Infrastructure Consortium (ERIC) whose primary mission is to operate the EVN VLBI correlator, to provide support to the EVN users and member telescopes, and conduct advanced research in radio astronomy and synergistic science areas.
In particular, JIVE is actively developing new correlator capabilities, including real-time e-VLBI, space science applications and mm-VLBI developments (e.g. EHT consortium). The Institute is involved in collaboration with several Dutch universities, and interactions with other radio-astronomy institutes throughout Europe. For further information regarding JIVE and the EVN, refer to www.jive.eu and www.evlbi.org. This position opening also appears in the AAS Job Register and on the JIVE web site (www.jive.eu/vacancies-jive).
We invite applications for the position of JIVE Near-Field VLBI Support Scientist to become available from as early as March 2021. Since 2003 JIVE, together with its ERIC members and associated organisations, members of the EVN and other institutes develops and applies the technique of near-field VLBI (NF VLBI). This technique enables achieving high-precision estimates of state-vector of point-like sources of radio emission (spacecraft) within the Solar System by means of measuring the radial velocity and lateral celestial position of the target. The technique has been successfully demonstrated for a number of planetary and space science missions, such as the ESA's Huygens Titan Probe, SMART-1, Venus Express, Mars Express, the Russia-led RadioAstron mission and others. JIVE, as the Principal Investigator's organisation, together with the Delft University of Technology (the Netherlands) and other partners is leading the Planetary Radio Interferometry and Doppler Experiment (PRIDE) of the ESA JUICE (Jupiter and Icy Moons Explorer) mission scheduled to launch in the middle of 2022 (https://sci.esa.int/web/juice/home).
The advertised position has a split between support duties and the appointee's own research as follows:
40% - participation in the development, live tests and science exploitation of the PRIDE-JUICE:
25% - support to the EVN users in conducting near-field VLBI and other space science VLBI experiments with the EVN
35% - own scientific and other activities
Job description:
maintaining and developing the NF VLBI capabilities of the EVN network and its data processing facilities at JIVE;
participating in JUICE mission preparatory activities at all stages of the mission covered by the current appointment of the employee;
close interaction with the Department of Astrodynamics and Space Missions of the Delft University of Technology in the development of PRIDE-JUICE;
assisting EVN users to schedule and analyse NF VLBI experiments, monitoring EVN performance in these experiments;
overseeing the data processing of the NF VLBI experiments at JIVE: data-quality review, preparation of PI/station feedback, liaison with users and network telescopes, etc.
In concurrence with the JIVE management and the partners at the TU Delft, the position might include some limited involvement in teaching and supervising activities.
The position may also involve a modest amount of other local-service collateral duties, such as visitor coordination or organizing colloquia.
Job requirements: The candidate should have earned a Ph.D. in astronomy, space science, physics or other relevant field by the time of taking up the position, and demonstrate a solid foundation in radio interferometry techniques. A good command of written and spoken English is essential, and an interest in VLBI processing software and/or interest/experience in spacecraft state estimation would be a plus.
The terms of employment are in accordance with the Dutch Collective Labour Agreement Research Institutions. We offer:
A fulltime 38 hours per week temporary appointment in the service of the Netherlands Foundation of Scientific Research Institutes (NWO-I) for the duration of two years which can be extended for a total duration of three years pending good performance.
A gross monthly salary, on a full time basis, in the range of € 3,383 to € 4,452 depending on relevant experience.
A holiday allowance of 8% and a year-end bonus of 8.33% of the gross annual salary.
A solid pension scheme (ABP).
42 vacation days per year on a full time basis.
An excellent package of secondary benefits, including relocation expenses, an opportunity to participate in the collective healthcare insurance and possibility for parental leave
JIVE is an equal-opportunity employer. Applicants of any nationality/citizenship are eligible to apply.
For more information about this vacancy, please contact Erika Timmerman, HR Officer (+31 (0)521-595-100; Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.). For additional enquiries please contact Prof. L.I. Gurvits (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.), head of Space Science and Innovative Applications at JIVE.
Applications should contain a CV including a list of publications, and a description of research interests. Please forward application materials to Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser., mentioning reference number JIVE2021/02. Please arrange for three letters of reference to be sent separately to the same address.
Applications reaching JIVE by 1 March 2021 will receive a full consideration.

Détails: 20 janvier 2021

1) Journée "Préparation aux retours d'échantillons extra-terrestres" | 26 janvier 2021 | Inscription & site web

Site web pour s'inscrire : https://echantillons-ht.sciencesconf.org/
Chères et chers collègues,

Astéroïdes: HY2, OSIRIS-REX, MMX, ZhengHe
Lune: Shang'e 5 & 6 et projets américains
Mars: Mars Sample Return
Les objectifs de cette réunion sont

d'informer une large communauté de l'implication du CNES dans ces missions, des partenariats éventuellement signés par le CNES avec les agences nationales, et des calendriers des appels d'offre
que le communauté fasse part de ses intentions (réponse aux appels d'offre) et fasse remonter d'éventuels besoins en instrumentation analytique associés, en collaboration et aide au montage de consortium pour répondre aux AO.
Cette réunion, ce déroulera le mardi 26 janvier 2021. Si c'est sanitairement possible, elle se déroulera en hybride avec 30 personnes présentes dans la salle de l'espace, les autres présents via Zoom. Si les conditions sanitaires ne le permettent pas, nous procéderons entièrement à distance. Le matin, le CNES et les acteurs impliqués présenteront les missions, partenariats, etc... L'après-midi, nous souhaitons qu'une personne par laboratoire présente ses objectifs, besoins et souhaits d'accompagnement. La réunion se terminera par une discussion et une synthèse.

Nous vous remercions d'avance pour votre contribution,

Bien cordialement,

Le CS du PNP.

2) Journée ARIEL France | En ligne | 28 Janvier 2021
La mission spatiale Ariel vient d'être adoptée par l'ESA pour un lancement en 2029. Ariel réalisera un grand relevé spectroscopique des atmosphères de 1000 planètes. La France est tres impliquée, avec un role de co-PI, la fourniture de l'instrument AIRS et les activités de segment sol et exploitation scientifique, sous la responsabilité du CNES, CEA, IAP, IAS, LESIA.

Pendant cette journée nous presenterons l'état du projet, d'un point de vue technique et des objectifs scientifiques. Nous vous invitons à proposer des contributions orales sur les différents aspects liés à Ariel. Cette journée est plutot orientée sur la Science d'Ariel.

Nous avons déjà identifiés plusieurs contributions invitées:

Le projet Ariel et le spectrographe AIRS (Michel Berthé & Jérome Amiaux)
La Science d'Ariel (Pierre Drossart)
Dernières nouvelles du JWST coté exoplanètes (Pierre-Olivier Lagage)
Spirou/Espadon (Claire Moutou)
L'apport de la sismologie PLATO (Marie Jo Goupil)
Inscrivez vous, proposez des contributions de 10 minutes avant le 8 janvier, que nous puissions preparer le programme.

Au plaisir de vous retrouver en ligne le 28 janvier.

JP Beaulieu, P. Drossart, A. Moneti.

Inscription à :
https://www.eventbrite.com/e/journee-ariel-france-tickets-133068161453

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3) The 2021 STScI Spring Symposium : Towards the Comprehensive Characterization of Exoplanets: Science at the Interface of Multiple Measurement Techniques | April 19‐23, 2021
The field of exoplanets has grown considerably over recent years, with more than 4000 exoplanets detected to date. In consonance, the characterization of exoplanets has become an increasingly important aspect of the field, to understand the diversity of these objects and answer fundamental astrophysical questions about their composition, structure, formation, and evolution. Beyond isolated detection methods, we are now facing a new paradigm in exoplanet science where we must consolidate resources and combine observational methods to probe different physical characteristics and understand the true nature of these planets.

The Space Telescope Science Institute is excited to host the 2021 STScI Spring Symposium, “Towards the Comprehensive Characterization of Exoplanets: Science at the Interface of Multiple Measurement Techniques”. The symposium will bring the community together to enable collaborations between diverse exoplanet sub‐fields, in observation, theory, and instrumentation. We will share our current capabilities in combining different detection and characterization techniques and address the needs and wants of the exoplanet community as we work towards closing the gaps towards a more complete understanding of exoplanets.

This symposium will address these scientific questions:

How do we combine techniques to have a more complete census of exoplanets?
Which sets of observed quantities best enable holistic planetary characterization?
How do observed architectures of exoplanet systems compare to the Solar System?
How atmospheric chemistry of exoplanets correlates with the physical properties and compositions of their host stars?
How do planets form and evolve?
What are the emerging areas in exoplanet science?
Description

The symposium will include invited reviews and regular/short contributed talks and posters selected from abstract submissions. We will post additional information on the symposium website. https://www.stsci.edu/contents/events/stsci/2021/april/towards-the-comprehensive-characterization-of-exoplanets.

Abstract Submittal

Abstracts for talk and poster consideration should be submitted using the following link: https://forms.gle/4AYZhbR3Effs4qxD6.

Registration

There is no registration fee to attend the symposium. However, participants will need to register for the symposium to attend. Registration website currently under construction and will be provided with second announcement.

Important Dates

Abstract submission deadline: February 1, 2021.
Abstract Notifications Sent: February 22, 2021
Registration Opens: January 4, 2021
Registration Closes: March 19, 2021
Symposium Dates: April 19‐23, 2021
Confirmed Speakers

Jessie Christiansen (Caltech/IPAC‐NASA Exoplanet Science Institute)
Knicole Colon (NASA Goddard Space Flight Center)
Laura Kreidberg (Max Planck Institute for Astronomy, Heidelberg)
Mathias Nowak (Institute of Astronomy, University of Cambridge)
Christopher Stark (NASA Goddard Space Flight Center)
Scientific Organizing Committee

Emily Rickman, Chair (Space Telescope Science Institute)
John Debes (Space Telescope Science Institute)
Néstor Espinoza (Space Telescope Science Institute)
Julien Girard (Space Telescope Science Institute)
Dean Hines (Space Telescope Science Institute)
Mark S. Marley (NASA Ames Research Center)
Caroline Morley (University of Texas ‐ Austin)
Susan Mullally (Space Telescope Science Institute)
Nikolay Nikolov (Space Telescope Science Institute)
Marshall Perrin (Space Telescope Science Institute)
Laurent Pueyo (Space Telescope Science Institute)
Elisa V. Quintana (NASA Goddard Space Flight Center)
Arpita Roy (Space Telescope Science Institute)
Kimberly Ward‐Duong (Space Telescope Science Institute)
Questions? Please contact us via symposium mailbox: Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

4) Post-Doc CEA-DAM | Des atomes aux planètes – étude ab initio des transitions de phase dans les intérieurs planétaires

Contexte

Depuis la découverte de la première exoplanète en 1995 – récompensée par un prix Nobel en 2019 –, plus de 4000 nouveaux mondes ont été détectés. Leur immense diversité ainsi que leurs grandes différences par rapport aux objets du Système Solaire stimulent une recherche fondamentale intense pour comprendre leur structure, leur évolution ainsi que leur habitabilité. Les pressions colossales qui peuvent être atteintes dans de tels objets, jusqu’à 1 TPa soit 10 millions d’atmosphères, et les températures élevées de l’ordre de 10000 K induisent des modifications importantes dans les propriétés de la matière. La caractérisation des matériaux sous de telles conditions extrêmes ainsi que des différentes transitions de phases qu’ils peuvent subir est essentielle à la compréhension des intérieurs planétaires ainsi qu’à la détermination de l’habitabilité des exoplanètes.
Au cours des deux dernières décennies des progrès immenses ont été faits dans le domaine des simulations dites « premiers principes » qui permettent maintenant de simuler les matériaux avec précision en incluant les effets quantiques notamment. En complément, les expériences à haute pression sous enclume diamant ou par chocs laser permettent d’améliorer notre connaissance des matériaux aux conditions extrêmes. Toutefois, la caractérisation thermodynamique fine et particulièrement celle des transitions de phase par les simulations doit être améliorée et c’est l’objectif de ce post-doctorat.
Dans le cadre de ce post-doctorat, le candidat sera amené à collaborer directement avec le Centre de Recherche Astrophysique de Lyon à l’École normale supérieure de Lyon. Mais il sera aussi amené à collaborer avec différents experts du CEA pour les aspects numériques ainsi qu’avec divers expérimentateurs et astrophysiciens en France et à l’étranger pour la mise en application des méthodes développées.

Objectif

Le candidat devra contribuer à l’implémentation de méthodes numériques spécifiques au calcul de l’entropie d’un matériau ainsi que de méthodes permettant la détermination des équilibres de phase dans des conditions extrêmes. Le candidat utilisera ensuite ces nouveaux outils pour déterminer des diagrammes de séparation de phase dans les planètes géantes ainsi que des courbes de fusion pour les Super-Terres. Ces informations seront confrontées à des mesures expérimentales haute-pression dans les années à venir et permettront de construire les modèles astrophysiques de demain.
Les développements numériques se feront dans le code Abinit qui permet d’utiliser la théorie de la fonctionnelle de la densité (DFT) pour calculer la structure électronique d’un matériau et ainsi ses propriétés thermodynamiques. Il s’agit d’un code massivement parallèle, objet d’une large collaboration internationale et écrit principalement en Fortran. Le candidat devra donc avoir une compétence élevée en développement numérique, préférentiellement en Fortran et avec des notions en parallélisation. Mais le candidat doit aussi et surtout être familier avec la physique statistique, la mécanique quantique et la thermodynamique. Une certaine aisance à l’oral et à l’écrit en anglais sera nécessaire. Au cours du post-doctorat, le candidat acquerra des connaissances sur la science des planètes et son état de l’art, et développera des compétences élevées sur les méthodes numériques pour l’étude des matériaux.

Contacts
SOUBIRAN/François
CEA DAM-DIF/91297 Arpajon

Tél. : 01.69.26.40.00 – Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

5) Post-doctoral Position on Gas in debris disks at Paris Observatory
Applications are invited for a postdoctoral researcher position at the Paris Observatory (LESIA) to work on gas in planetary systems with Dr Quentin Kral in France. The application is funded by the French National Research Agency (ANR) for the project called REVOLT (the revolt of gas in planetary systems). The position will be funded for a minimum of one year and more funding may come as a second step (though it is not guaranteed). Additional funding is available for computer equipment, science travel, publication charges, ...

We are looking for a candidate with, ideally, experience working on gas and/or debris disks. In the first year, the candidate will have to apply for observing time on relevant telescopes to observe gas in debris disks. They will also work on more theoretical perspectives and tackle new original projects related to the origin of the gas release in planetesimal belts as well as provide observational tests that could be carried out. The postdoc position is very complete as it is a mixture of theory/modelling/observations.
The start date is flexible and could be as early as Feb. 2021 (preferred), but should be no later than Oct. 2021.

Interested candidates are encouraged to contact Dr Quentin Kral (Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.) for further information.
Requirements:

A PhD in (astro)physics is required by the time the appointment starts (Feb 2021). Full working proficiency in either French or English is required.
Applications should be submitted by 11 January 2021 to Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser., including:
- a motivation letter
- a curriculum vitae - a publication list
- a statement of research interests (no more than 2 pages but shorter is better)
- two letters of reference
Review of applications will begin in early January.

Application Deadline: Monday, 11 January 2021

Included Benefits: The position benefits from the French social security system (medical insurance), maternity/paternity leave, family supplement for children, participation to public transport fees, pension contributions. We also note that schools are free in France for all children above 3.

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