PI: Caroline Morley, UC Santa Cruz, firstname.lastname@example.org
Address: Astronomy and Astrophysics Board of Study, Natural Sciences II, Santa Cruz, CA, 95064 USA
CoI: Andrew Skemer, UC Santa Cruz
CoI: Katelyn Allers, Bucknell U.
CoI: Gordon L Bjoraker, NASA Goddard Space Flight Center
CoI: Mark Marley, NASA Ames Research Center
CoI: Jonathan Fortney, UC Santa Cruz
CoI: Jackie Faherty, Carnegie Institution of Washington
CoI: Thomas R Geballe, Gemini Observatory
Title: The Second Spectrum of the Coldest Brown Dwarf
Abstract: WISE 0855 is the coldest known brown dwarf with an effective temperature of ~250 K. We have successfully obtained an M band spectrum using GNIRS on Gemini North, and here we propose to measure an L band spectrum, which will provide important and complementary information to M band. While M band probes water vapor absorption, water ice clouds, and phosphine, L band probes the other two most important absorbers in a cold atmosphere: methane and ammonia. Combined, a spectrum across L and M bands will motivate theoretical studies and improvements to models of frigid atmospheres, a critical step before the launch of JWST.
Program Type: Standard/Galactic
Run 1 (2016B): GEM-NQ/GNIRS -- 7.5hrs band 2 (GN-2016B-Q-50)
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360