Planet(esimal)s Around Stars with TESS (PAST) III: A Search for Triplet He I in the Atmospheres of Two 200 Myr-old Planets

Eric Gaidos, Teruyuki Hirano, Rena A. Lee +13

We report a search for excess absorption in the 1083.2 nm line of ortho (triplet) helium during transits of TOI-1807b and TOI-2076b, 1.25 and 2.5R${}_{\mathrm{Earth}}$ planets on 0.55- an…