Desert Dwellers and Dynamic Duos: Short-Period Brown Dwarf Companions and Binary Science with Exoplanet Surveys

Details Desert Dwellers and Dynamic Duos: Short-Period Brown Dwarf Companions and Binary Science with Exoplanet Surveys Desert Dwellers and Dynamic Duos: Short-Period Brown Dwarf Companions and Binary Science with Exoplanet Surveys

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21722604f&link_type=abstract

American Astronomical Society, AAS Meeting #217, #226.04; Bulletin of the American Astronomical Society, Vol. 43, 2011

Computer Science

Databases

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Exoplanet transit and Doppler surveys detect many binary stars and brown dwarf companions with relative ease because the observational signatures are 1-2 orders of magnitude larger than planets. These objects allow for studies of several ancillary science topics, such as the two brown dwarf deserts and the mass-radius relationship of stars. In this dissertation talk, I will present my thesis work on conducting these studies using data from the MARVELS survey and several transit survey databases. I will present the discovery of two short-period (P < 10 days) brown dwarf companions to main sequence stars discovered during the MARVELS survey and its Pilot Project. Although I will focus on these two brown dwarfs, the MARVELS survey has already discovered a dozen brown dwarf companions that will serve to characterize the dryness of the brown dwarf deserts. These discoveries are needed to better understand brown dwarf formation and dynamical evolution histories. I will then present results from my work on cross-referencing spectroscopic binaries found in the MARVELS survey with archival photometry to conduct studies of the mass-radius relationship. Finally, I will present spectroscopic observations of known eclipsing binaries from transit surveys using the EXPERT instrument at the KPNO 2.1m telescope.

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