The ExoSystems workshop series aims to structure the French community around the formation of star-planet systems, their evolution, the diversity of planets, their atmospheres and orbital architecture, as well as their habitability around different types of stars. Its goal is to promote and strengthen the multiple instrumental, observational, and theoretical synergies within our community in France. Since 2025, the ExoSystems conference series has been organized by the CES of the ExoSystems cross-cutting thematic action (website). We particularly encourage early-career researchers to submit oral contributions for this workshop.

The past conferences of the series : 

• Exosystemes I ("Evolution",  Paris, 2020, site)
• Exosystemes II ("Structure", Toulouse, 2021, site)
• Exosystemes III (Marseille, 2023, site)
• Exosystemes IV ("Exoplanètes Francce 2030", Lyon 2024, site)

Scientific presentations will be given in English to encourage the participation of PhD students and postdoctoral researchers, while community discussions will be held in French, with dedicated sessions focusing on the structuring and future perspectives of the community.

• General contributions open to the community
• Community-led thematic workshops: 
  • Gaia and Extrasolar Systems: DR4, the Day Before — chair: F. Kiefer
  • Magma Ocean Exoplanets and Sub-Neptunes — chair: S. Charnoz
• Round Table: “Exoplanet Science in the 2030s”
  • JWST & ARIEL — Pierre-Olivier Lagage
  • PLATO — Magali Deleuil
    
  • ROMAN — Clément Ranc & Arthur Vigan
  • Ground-Based Instrumentation — Xavier Delfosse
  • VLTI / MATISSE / GRAVITY+ — Florentin Millour
• Community Workshop (note: this workshop will be in French, Thursday afternoon)
  • AT-EXOS — CES
  • CNES — Christian Mustin
  • SNO —Franck Le Petit
  • PEPR — Maud Langlois

The Exosystems V conference will take place from Tuesday, March 31 to Thursday, April 2 at the Institut d’Astrophysique de Paris.

A zoom link will be provided on this webpage. 

Registration is free and needs an account on Scienceconf.

The maximum capacity is 120 people.

Lunches will be provided.

Grants for students and postdoctoral researchers will be opened (number still to be confirmed).

• The survey to choose the themes is closed.
• Deadline to submit a contribution: January 26, 2026
• Deadline for registration: February 27, 2026

Antonio Garcia Muñoz (chair LOC, CEA), Elsa Ducrot (co-chair LOC, CEA), Clément Ranc (co-chair LOC, IAP) , Mickaël Bonnefoy (coordinateur AT-EXOS, IPAG), Sophia Sulis (coordinatrice AT-EXOS, LAM), Sébastien Charnoz (UPC/IPGP), Flavien Kiefer (LIRA), Lionel Bigot (OCA), Xavier Bonfils (IPAG),Florian Debras (IRAP), Quentin Kral (LIRA), Jérémy Leconte (LAB), Antoine Petit (OCA), Arthur Vigan (LAM)