NOAO >   Observing Info >   Approved Programs >   2013B-0526

Small NOAO Logo

Proposal Information for 2013B-0526


PI: Trent Dupuy, Harvard-Smithsonian Center for Astrophysics, tdupuy@cfa.harvard.edu
Address: 60 Garden Street, Cambridge, MA 02138, USA

CoI: Jessica Lu, University of Hawaii (IfA)
CoI: Michael Liu, University of Hawaii (IfA)
CoI: William Best, University of Hawaii (IfA)
CoI: Eugene Magnier, University of Hawaii (IfA)

Title: Uncovering a New Population of Brown Dwarf Binaries with GeMS Astrometry

Abstract: Brown dwarfs provide key laboratories for understanding the evolution and atmospheres of low-luminosity objects. The transition between the L and T spectral class remains one of the long-standing puzzles in this field, as highlighted by the discovery of similar atmospheres around directly imaged extrasolar planets. We propose to use GeMS to investigate a newly identified population of candidate binaries spanning the L/T transition. By measuring the photocenter position as a function of wavelength compared to background stars, GeMS will allow us to achieve an order of magnitude increase in angular resolution over traditional AO imaging, as verified by our analysis of on-sky data. Our program will enable discovery of very short period binaries, uniquely suited for increasing the number of dynamical mass measurements in the very near-term. In addition, we will identify the truly single objects with peculiar heterogenous photospheres, which will serve as ideal systems for understanding cloud evolution at the L/T transition.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2013B-0526

noaoprop-help@noao.edu

Small NOAO Logo