High-Precision Atmospheric Constraints for a Cool T Dwarf from JWST Spectroscopy

Callie E. Hood, Sagnick Mukherjee, Jonathan J. Fortney +12

We present observations of the T8 dwarf 2MASS 0415-0935 with JWST's NIRSpec spectrograph using the G395H grating ($\sim$ 2.87 - 5.14 $\mu$m). We perform the first atmospheric retriev…