PI: Abhijith Rajan, Arizona State U., email@example.com
Address: School of Earth and Space Exploration, 781 Terrace Road, Tempe, AZ 85287 USA
CoI: Jennifer Patience, Arizona State U.
CoI: Paul Anthony Wilson, University of Exeter
CoI: Caroline Morley, UC Santa Cruz
CoI: Jonathan Fortney, UC Santa Cruz
CoI: Mark S Marley, NASA Ames Research Center
CoI: Frederic Pont, University of Exeter
Title: Brown dwarf Atmosphere Monitoring: Surveying the Coolest Brown Dwarfs
Abstract: Using the NEWFIRM camera on the 4m Mayall telescope, we propose to extend our Brown dwarf Atmosphere Monitoring (BAM) survey to the coolest northern brown dwarfs. The proposed observations will continue our exploration of the dynamic atmospheric evolution of ultracool T-dwarfs, which are a link between the coolest stars and exoplanets. Recent work on synthetic atmosphere models has indicated that sulﬁde and chloride clouds condense in the mid to late T-dwarf spectral range and may impact the observable properties of the atmospheres including color and variability. To obtain empirical measurements for comparison with model atmospheres, we propose to complete our 48 target Northern T-dwarf sample covering a wide range of near-IR colors consistent with different cloud models. Photometric monitoring is an essential tool to search for evidence and evolution of surface brightness inhomogeneities caused by cloud features, storms, or activity. The proposed program will provide a comprehensive dataset serving as a benchmark comparison to directly imaged planets, intensely irradiated Hot Jupiters, and synthetic atmospheric models incorporating different physical processes.
Program Type: Standard/Galactic
Run 1 (2015A): KP-4m/NEWFIRM -- 6n on Apr 02 - Apr 07 2015
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360