Photometric Follow-up of WISE Brown Dwarf Candidates

Details Photometric Follow-up of WISE Brown Dwarf Candidates Photometric Follow-up of WISE Brown Dwarf Candidates

Feb 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011noao.prop..400g&link_type=abstract

NOAO Proposal ID #2011A-0400

Physics

Scientific paper

Brown dwarfs (BDs) provide a natural link between the physics of stars and gas giant planets. Although hundreds of BDs have been discovered to date, a gap of nearly 400 K remains between the coolest BDs known (Teff~500 K) and Jupiter (Teff~128 K). Detailed studies of these cool BDs will allow us to measure the low-mass mass function and extend our studies of low-temperature, high-pressure atmospheric physics and chemistry well into the exoplanet regime. One of the primary science goals of the Wide-field Infrared Survey Explorer (WISE), a NASA MIDEX mission that has surveyed the entire sky at 4 mid- infrared wavelengths, is to identify such cool BDs. We propose J and H band observations of a large (~200) set of candidate BDs found in the WISE survey data. The proposed observations will allow us distinguish BDs from our main contaminants, dust-obscured galaxies and asymptotic giant branch stars. They will also determine which of our spectroscopic instruments is best suited to obtain the spectra that will be used to classify the BDs and provide greater insight into the nature of these cool objects.

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