Water depletion and 15NH3 in the atmosphere of the coldest brown dwarf observed with JWST/MIRI

H. Kühnle, P. Patapis, P. Mollière +21

With a temperature of $\sim 285$ K WISE0855 is the coldest brown dwarf observed so far. Using the James Webb Space Telescope (JWST) we obtained observations that allow us to charac…