Cool Stars 21 splinter session "Characterising stellar activity in the era of extreme radial velocity surveys of low-mass planets orbiting F-M stars" on XXth Jul 2022, 2-6 pm

This website describes the splinter session “Characterising stellar activity in the era of extreme radial velocity surveys of low-mass planets orbiting F-M stars“ of the Coolstars 21 meeting held in Toulouse 3-8th of July, 2022. We wish to focus on the spectroscopic manifestation of stellar variability, covering a large range of spectral types (F-M), where similar processes are present but with different relative impacts on radial velocities. We will also focus on attempting to significantly improve our understanding of RV variability to enable the detection of very low-mass planets. We have therefore two main objectives: 1/ improve exchanges between communities (techniques, characterisation of stellar activity) to get a more complete view of the processes, focusing here on main sequence stars. 2/ to improve a better community effort to identify the next steps and define what we need to improve our understanding of RV stellar variability (theoretical works, other techniques, simultaneous observations...). We will encourage attendees to develop collaborations across the various observational and theoretical techniques. There is much to be gained from further exploring those synergies and comparing the Sun to other stars.