Inside the Snowline: What Infrared Spectra Reveal About Disks Around Young TRAPPIST-1-like Stars
Ilaria Pascucci (University of Arizona)
Monday 08/06/2026 @ 11:00, Sala Antonio Sollima (IV piano Battiferro)
Small rocky planets are abundant around late M-type stars and many of them are now key targets for atmospheric characterization with JWST. Are these planets similar or different than those around Sun-like stars? I will present infrared spectroscopy of disks around young TRAPPIST-1 analogues spanning ages from a few to tens of millions of years. These spectra show that the gas inside the snowline commonly exhibits elevated C/O ratios. I will discuss models capable of reproducing these observations and explore the implications for the composition and atmospheres of planets forming in these environments.