Helium in the Extended Atmosphere of the Warm Super-Puff TOI-1420b

Shreyas Vissapragada, Michael Greklek-McKeon, Dion Linssen +11

Super-puffs are planets with exceptionally low densities ($\rho \lesssim 0.1$~g~cm${}^{-3}$) and core masses ($M_c\lesssim 5M_{\oplus }$). Many lower-mass ($M_p\lesssim 10M_{\oplus }$) super-…