Lettre de l'AT Exosystèmes n°6 (29 avril 2025)
Chères et chers collègues,
Voici les nouvelles de l’AT Exosystèmes du 2025-04-29 :
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1. Postdoc fellow Position in observational studies on exoplanets formation
2. Rappel : Conference "51 Peg b 30th Birthday: Cool Giant Planets & Their Systems"
3. Rappel : Concours logo de l’AT Exosystèmes
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Pour transmettre vos annonces et tout résultats scientifiques que vous souhaitez diffuser à la communauté, écrivez-nous à l’adresse <newsletter-at-exos@services.cnrs.fr>.
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1. Postdoc fellow position in observational studies on exoplanets formation
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We would like to advertise an 18-months Postdoc Fellow Position in observational studies on exoplanets formation at the centre de Recherche Astrophysique de Lyon (CRAL), France
The ANR-funded project DDISK (Circumstellar disks: Morphological study and mineralogical properties thanks to advances in data science) is recruiting a post-doctoral fellow to work on the analysis of near infrared and optical high contrast observations of Circumstellar disks aiming at detecting new exoplanets. The recruited researcher will join the group led by Maud Langlois at CRAL and will work with our ANR team including Olivier Flasseur, Antoine Kasczcyc, L. Denneulin and Ferréol Soulez in collaboration with IPAG (Grenoble) and LIRA (Meudon).
This recruitment is funded by the ANR DDISK, which aims to optimally exploit data from the SPHERE instrument to detect exoplanets and circumstellar disks that can provide insight into planet formation processes. The Research Fellow will lead the analysis of VLT/SPHERE data with state-of-the-art high contrast algorithms. She/he will carry a systematic search of signspost or direct detection of exoplanets using multi-modality (imaging, spectroscopy and polarimetry) and multiple epochs data allowing to characterize new detections, and collaborate with partner institutions on simulations of formation mechanisms (companion/disk interaction,… ) and scientific interpretation. Our team has already developed and validated several cutting-edge algorithms (PACO, REXPACO, PACOME and Rhapsodie) together with a framework to automatically optimize the data processing with these algorithms to perform such systematic circumstellar disk survey.
The position is located at the Lyon Astrophysical Research Center in the AIRI team, which is working on this project in collaboration with many French laboratories (LIRA, IPAG, OCA, ENS Lyon, EPITA, ). Our team is also involved in the PEPR ORIGINS program, which funds several doctoral and postdoctoral students related to this research topic. A PhD in astronomy or related field is required. Previous experience in observational astronomy in planet formation and/or exoplanet direct detection would be appreciated Experience in numerical simulations of circumstellar environments and/or familiarity with high-contrast imaging would be a plus.
The position is for 18 months, with a possible extension pending successful collaboration within the research group. Remuneration depends on experience and includes full benefits. The starting date is as soon as possible after the 1st June 2025 and no later than the 1st September 2025. To apply send a short research statement summarizing candidate's research interests, skills and experiences along with how this position fits into career goals, a CV including a list of publications. The candidate will also arrange 2 recommendation letters to be sent to maud.langlois@cnrs.fr before May 15th 2025. We consider diversity as an asset within our team, and welcome applicants with diverse backgrounds and experiences.
https://anr.fr/Projet-ANR-21-CE31-0015
[Transmis par Maud Langlois]
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2. Rappel : Conference "51 Peg b 30th Birthday: Cool Giant Planets & Their Systems"
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We reminder that the pre-registration for this conference is open and the deadline is coming soon (May 1st):
https://ohp2025.sciencesconf.org/
Invited speakers:
Michiel Lambrechts (University of Copenhagen)
Brendan Bowler (UCSB)
Amaury Triaud (University of Birmingham)
Christoph Mordasini (University of Bern)
Ravit Helled (University of Zurich)
Jonathan Fortney (UCSC)
Elisabeth Matthews (MPIA)
]ayne Birkby (University of Oxford)
Johannes Sahlmann (ESA)
Scientific rationale :
This conference will celebrate the 30th anniversary of the discovery of planet 51 Peg b, at OHP where it all started, from 6 to 10 October 2025. This year edition will focus on long-period giant planets and their systems in the current observational context: long-term radial velocity surveys, direct imaging and spectroscopy of young systems, high-accuracy orbital monitoring with interferometry, characterisation of planetary companions at high spectral resolution, and the upcoming release of ESA/Gaia DR4 data that holds great promise for the exoplanet field.
Knowing the entire architecture of a system is crucial to understanding the processes of planet formation and evolution. The existence of inner planets, possibly of lower mass, can be probed by radial velocities, but also by transits. The existence of longer-period objects will be increasingly sought through imaging and long-term RV tracking.
The symposium will cover not only the existence of these planets, their systems and their architectural parameters, but also their atmospheric composition, their internal compositions, and the possibility of moons or exocomets in these systems. The instrumental roadmap for exoplanets over the next few years will enable us to make a great deal of progress in these areas and will be also discussed.
[Transmis par Isabelle Boisse, Damien Ségransan & Arthur Vigan pour le SOC]
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3. Rappel : Concours logo de l’AT Exosystèmes
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L’AT lance un concours pour la création de son logo. Le design sélectionné sera présenté lors de l’atelier de l’AT aux journées SF2A. Nous souhaiterions idéalement une version vectorisée et une au format png (résolution >300dpi) avec un format de fichier logo_NOM_Prenom.
Envoyez nous vos contributions à l’adresse ces-at-exos@servives.cnrs.fr avant le 5 mai 2025.
Nous comptons sur votre créativité et votre talent !
[Transmis par l’AT Exosystèmes]
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Pour transmettre vos annonces et tout résultats scientifiques que vous souhaitez diffuser à la communauté, écrivez-nous à l’adresse <newsletter-at-exos@services.cnrs.fr>.