The first brown-dwarf eclipsing binary: Fundamental tests of brown-dwarf formation and evolution

Details The first brown-dwarf eclipsing binary: Fundamental tests of brown-dwarf formation and evolution The first brown-dwarf eclipsing binary: Fundamental tests of brown-dwarf formation and evolution

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40503s&link_type=abstract

Spitzer Proposal ID #40503

Physics

Scientific paper

We propose a small and straightforward GO program, requiring only 2.4 hr of Spitzer time, to fully characterize the only known empirical benchmark of the fundamental physical properties of young brown dwarfs. 2M0535-05, a newly discovered eclipsing binary in the Orion Nebula consisting of two brown dwarfs, is a crucial system for study because it provides the first---and to date only---direct and accurate measurements of masses and radii for newly formed (~1 Myr) brown dwarfs. Here we seek to: (a) characterize the presence of any protoplanetary disk material in this system in order to study the evolution of such disks in young brown dwarfs; and (b) empirically determine the brown dwarfs' spectral energy distributions in order to stringently test the predictions of theoretical brown-dwarf evolutionary models. With these aims, we will combine IRAC, PCRS, and MIPS observations with Gemini observations in the optical and 2MASS measurements in the near-infrared, in order to fully characterize and model the photospheric and disk components of the spectral energy distribution of 2M0535-05 from 0.5 to 24 um. The observations proposed here are necessary to realize the full potential of 2M0535-05 as a fundamental benchmark in our understanding of the nature and origins of brown dwarfs.

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