A Search for Pulsation in Young Brown Dwarfs

Details A Search for Pulsation in Young Brown Dwarfs A Search for Pulsation in Young Brown Dwarfs

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008noao.prop..506c&link_type=abstract

NOAO Proposal ID #2008A-0506

Physics

Scientific paper

Brown dwarfs are a ubiquitous yet poorly understood product of the processes that take place in star formation regions. To date, observational methods to determine important properties such as mass and age are lacking. Pulsation in brown dwarfs and very low mass stars is a newly suggested phenomenon that offers unprecedented opportunities to probe the interiors and evolution of these objects. We propose to identify pulsating substellar objects at a range of masses and ages. The CTIO 1.0m and WIYN 0.9-m telescopes are ideally suited to this enterprise, and we will acquire precise time-series photometry on a sample of confirmed brown dwarfs in a number of young clusters. With estimated masses and ages appropriate to the deuterium-burning stage, these objects are some of the most promising candidates in a potential new class of pulsators. We aim to fully characterize light-curve periodicities down to millimagnitude amplitudes, and ultimately use the results to provide fundamental constraints on the interiors and properties of brown dwarfs.

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