C, N, O, S, and photochemistry in a temperate giant planet orbiting a late M dwarf

Michael Zhang, Qiao Xue, Jeehyun Yang +20

We report the JWST NIRSpec/PRISM transit spectrum of TOI-6894b, an exceptional 420 K sub-Saturn that is the only known giant planet transiting a late M dwarf. Remarkably, both the…