Scientic Rationale

The search for signs of life elsewhere in the Universe requires the remote detection of molecules in the atmospheres of exoplanets. Progress with high-resolution spectroscopy with ground-based instruments has led to detections of a few atomic (Na) and molecular species (CO, H2O) in the atmospheres of hot giant exoplanets. From the Doppler shift of the planet spectral lines, it has been possible to constrain atmospheric winds, planet rotation, and even the orbital inclination of non-transiting planets. Current detections not only provide evidence for how the composition of a hot giant planet atmosphere can affect its thermal structure and cloud formation processes, but also have the potential to constrain the universal mechanism for planet formation (preferential birth location of the planet in its protoplanetary disc, etc.). However, the planet-hosting stars are covered with a complex and stochastic patterns associated with convective heat transport (i.e., granulation). The resulting stellar activity, associated to other phenomena such as magnetic spots and rotation, can bias the detection and characterization of exoplanetary signals. The synergy between stellar physics and planetology is essential to confirm and quantify the molecular detections in exoplanets.

The advent of new high-resolution spectrographs at large and medium-size facilities (CRIRES+, GIARPS, SPIRou, IGRINS, iSHELL, etc...) with unprecedented throughput and spectral range will extend the sample of exoplanets that can be targeted with this technique towards cooler and smaller planets. Given the high degree of complementarity between high-resolution spectroscopy from the ground and with low-resolution spectroscopy from space, the synergy between the two techniques will be crucial for the next stage of comparative exo-planetology, especially on the targets found by the TESS mission. When finally implemented at the European Extremely Large Telescope, high-resolution spectroscopy will have the potential to identify biomarkers in the atmospheres of Earth analogues. 





  • December, 2017: First announcement and web site
  • December 1st, 2017: Registration and abtract submission open
  • April 30th, 2018: Deadline for financial support request check here for information 
  • June 30th, 2018: Deadline for registration and abstract submission 
  • October 12th, 2018: The workshop starts


SOC - in progress

The workshop is a cross road between planetology and stellar physics. 
This synergy is essential to quantitatively and firmly feature the molecular
detections in exoplanets and open the path to biomarker detection in exoearths.
The SOC is under-construction and includes people from both communities.

- Andrea Chiavassa, (OCA, France) co-chair - stellar physics
- Matteo Brogi, (University of Warwick, UK) co-chair – planetology
- Lionel Bigot (OCA, France) - stellar physics
- Alessandro Sozzetti (Osservatorio astronomico di Torino, Italy) – planetology
- Dainis Dravins (Lund Observatory, Sweden) - stellar physics
- Mercedes Lopez-Morales (CfA Harward, USA)– planetology
- Jean Francois Donati (IRAP, France) - stellar physics
- Emily Rauscher (University of Michigan, USA) - planetology
- Nuno C. Santos (University of Porto, Portugal) – stellar physics
- Ian Crossfield (MIT, USA) – planetology
- Elisabeth Newton (CfA Harward, USA) – stellar physics
- Tristan Guillot (OCA, France) – planetology
- Luca Fossati (Institute Austrian Academy of Sciences, Austria) – stellar physics
Jayne Birky (University of Amsterdam, The Netherlands) – planetology



- Andrea Chiavassa, (OCA, France) 
- Lionel Bigot (OCA, France) 
- Tristan Guillot (OCA, France) 
- Sophie Rousset (OCA, France)



For any information, please contact



Location and Social event








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