# Lettre de l'AT Exosystèmes n°7 (13 mai 2025)
Chères et chers collègues,
Voici les nouvelles de l’AT Exosystèmes du 2025-05-13 :
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1. AT-EXOS: site web & logo
2. École d'été 2025 de l'Institut Origines à l'Observatoire de Haute Provence
3. [Last call] JWST Exosystem Proposal Preparation workshop - Cycle 5, Marseille, June 18-19
4. Roman School Europe 2026
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Pour transmettre vos annonces ou 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. AT-EXOS: site web & logo
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L'AT-EXOS a le plaisir d’annoncer le lancement de son site web: http://at-exos.iap.fr/
Nous re-faisons appel à votre créativité : un appel à contribution est ouvert pour la création du logo officiel de l’AT-EXOS ! La date limite pour participer a été étendue au 8 juin 2025. Les propositions sont à envoyer à ces-at-exos@services.cnrs.fr
Merci par avance pour votre aide !
[Transmis par l'AT Exosystèmes]
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2. École d'été 2025 de l'Institut Origines à l'Observatoire de Haute Provence
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We are delighted to announce the 3rd International Summer School at the Observatoire de Haute-Provence (OHP), organized by the Institut Origines of Aix-Marseille University. This event will take place from June 24 to June 27, 2025, and will explore one of the most fundamental questions in science: What is life?
From its definition to the conditions of its emergence, diversity, and evolution, this Summer School will provide an interdisciplinary perspective on the frontiers of life. Through lectures delivered by world-renowned experts in prebiotic chemistry, microbiology, exobiology, planetary science, astrophysics, philosophy, and law, participants will gain insights into current knowledge and competing theories across different spatial and temporal scales.
The program will feature:
• Keynote lectures by leading scientists and scholars
• Roundtable discussions moderated by an award-winning science journalist
• Ample time for networking and in-depth discussions among participants
Confirmed speakers include:
Chantal Abergel, Mélanie Baroni, James Bradley, Jean-Michel Claverie, Magali Deleuil, Simon Duval, David Ehrenreich, Gaël Erauso, Vincent Hue, Armel Kerrest, Frédéric Laurie, Dominique Leglu, Martina Preiner, Pascal Taranto, Nicolas Thouveny.
The full program can be found on the Institut Origines website : https://institut-origines.univ-amu.fr/fr/formation/ecoles-ete
You can register via this link, DEADLINE : 30/05
https://amu.azur-colloque.fr/inscription/en/340/inscription
[Transmis par J-C. IZE]
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3. [Last call] JWST Exosystem Proposal Preparation workshop - Cycle 5, Marseille, June 18-19
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Registrations are open for the JWST Exosystem Proposal Preparation workshop - Cycle 5, to be held at the Laboratoire d'Astrophysique de Marseille on June 18 and 19.
Please visit the workshop website to register:
https://jwst-c5-exosys.sciencesconf.org/(https://jwst-c5-exosys.sciencesconf.org/)
The registrations will be open until Mai 16th.
Early-career scientists are welcome and encouraged to register.
Meals will be provided, travel and lodging are at the discretion of the participants.
Roman Coronagraph Splinter session:
A dedicated splinter session will take place just after the workshop (morning of Friday, June 20th) to coordinate the preparation of Roman Coronagraph Science & Technology proposals within the CPP France community. Workshop participants are welcome to attend.
Workshop rational:
In just 3 observing cycles, the James Webb Space Telescope (JWST) has already revolutionized the science of exoplanets and exoplanetary systems. Its unrivalled sensitivity and spectral resolution, particularly in the mid-infrared, have enabled previously unattainable diagnoses to be made. Significant breakthroughs have been made in all sub-fields related to exoplanetary systems, from transiting rocky planets to gas giant planets, and from the chemistry of inner disks to the physics of cold outer disks.
As the pressure to obtain observing time with this observatory keeps increasing, it is all the more necessary to join forces to develop competitive science cases with multiple expertise from observations to theory.
To help the French exosystem community to develop strong and successful proposals, we will be holding the 3rd edition of the JWST Exosystem Proposal Preparation Workshop series on June 18-19 at the Laboratoire d'Astrophysique de Marseille.
This two-day workshop will be organized in two parts:
- A session with invited talks from experts about the health of the telescope and its instruments, and reviews on the latest JWST results on Exosystems sub-fields,
- A brainstorming session in small groups to develop collaborative proposals on key science cases.
For questions or additional information, please contact the organizing team via the workshop website(https://jwst-c5-exosys.sciencesconf.org/).
The SOC:
Anthony Boccaletti, Mickael Bonnefoy, Elodie Choquet, Pierre-Olivier Lagage, Lucie Leboulleux, Vivien Parmentier
[Transmis par E. Choquet]
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4. Roman School Europe 2026
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Roman Coronagraph School Europe 2026
9-13 March 2026, Villa Clythia, Fréjus (France)
In 2027, the Coronagraph Instrument from the Nancy Grace Roman Space Telescope (RST) will provide the very first images of mature giant exoplanets and circumstellar disks in reflected light in the visible. This unique science will be enabled by reaching contrast levels 2 to 3 orders of magnitude better than current state-of-the-art visible or near-infrared coronagraphs, thanks to the combination of several high-contrast imaging technologies for the first time in space. Beyond the technological demonstration, the Roman Coronagraph is expected to enable ground-breaking science and offer unique science opportunities to the community. The Community Participation Program (CPP) team is currently hard at work to prepare the target list, observations, planning tools, data simulation and reduction pipelines, and tools to support for several key observing modes. It ambitions to provide the community with all the information and tools needed to make the best out of the public Roman Coronagraph data.
The Roman Coronagraph is led by NASA, but with a strong participation from international agencies (CNES, MPIA, ESA, and JAXA). This participation means that the European astronomical community can play an important role in the preparation of the mission and then in the scientific exploitation of the data provided by the coronagraph. This school intends to provide to 20 European PhD students and postdocs all the necessary background and tools to be ready to reduce, analyse and interpret the first Roman Coronagraph data.
The school is organised over five days, 9-13 March 2026, at Villa Clythia in Fréjus (France). It will consist in classes on high-contrast imaging, exoplanet atmosphere modelling, debris disks, and exoplanet demographics. A large part of the school will be dedicated to hands-on sessions to get familiar with simulation tools, reduction pipeline, and modelling and retrieval tools.
Important dates:
• May 2025: Announcement of the school and opening of the applications
• 17 October 2025: End of applications
• Mid-November 2025: Announcement of the selected participants
• March 2026: School
All the relevant information, including invited speakers and instructions on how to apply, can be found on the website:
https://romanschool2026.sciencesconf.org/
SOC: Beth Biller, Gaël Chauvin, Elodie Choquet, Valentina D'Orazi, Johan Mazoyer, Paul Mollière, Nicole Pawellek, Arthur Vigan [chair]
[Transmis par A. Vigan]