NOAO >   Observing Info >   Approved Programs >   2016B-0242

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Program Information for 2016B-0242


PI: Caroline Morley, UC Santa Cruz, cmorley@ucolick.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

Scheduled Nights:
Run 1 (2016B):  GEM-NQ/GNIRS -- 7.5hrs band 2 (GN-2016B-Q-50)


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NOAO >   Observing Info >   Approved Programs >   2016B-0242

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