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 :
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.


Thank you,

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.


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.


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


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:

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


Alessandro Morbidelli