Splinter Session 4 - Cool Stars 23

Slot	Title	Speaker	Link
2:00	Invited Talk	Ignasi Ribas
2:20	Contributed Talk	Contributed Speaker (TBD)
2:35	Contributed Talk	Contributed Speaker (TBD)
2:50	Contributed Talk	Contributed Speaker (TBD)
3:05	Discussion
3:30	Coffee Break
4:00	Invited Talk	Dainis Dravins
4:20	Contributed Talk	Contributed Speaker (TBD)
4:35	Contributed Talk	Contributed Speaker (TBD)
4:50	Contributed Talk	Contributed Speaker (TBD)
5:05	Discussion

Invited Speaker: Ignasi Ribas

Affiliation: Institute of Space Sciences (ICE, CSIC) & Institut d’Estudis Espacials de Catalunya (IEEC)

Talk Title: The Star Is the Signal: Taming Stellar Activity to Reveal Sun–Earth Analogues

Abstract: Extreme-precision radial velocity (RV) instruments, such as ESPRESSO, have now achieved long-term stability at the 10 cm s⁻¹ level. In principle, this level of precision enables the detection and characterisation of small rocky planets, including true Sun–Earth analogues. In practice, however, intrinsic stellar variability often exceeds instrumental noise and becomes the dominant source of uncertainty, even for relatively quiet stars like the Sun. In this talk, I will examine the impact of stellar activity on RV planet detection and describe ongoing efforts to mitigate its effects. I will highlight recent advances, emerging physical insights, and the key challenges that remain. The overarching goal is clear: to reach the level of performance required to robustly detect and confirm true exo-Earths.

Abstracts for contributed talks will be made available before the conference.