Binary Science from the MARVELS Pilot Project: Detection of a Candidate Substellar Companion and Identification of Eclipsing Binaries with Archival SuperWASP Data

Details Binary Science from the MARVELS Pilot Project: Detection of a Candidate Substellar Companion and Identification of Eclipsing Binaries with Archival SuperWASP Data Binary Science from the MARVELS Pilot Project: Detection of a Candidate Substellar Companion and Identification of Eclipsing Binaries with Archival SuperWASP Data

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21547203f&link_type=abstract

American Astronomical Society, AAS Meeting #215, #472.03; Bulletin of the American Astronomical Society, Vol. 42, p.518

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Large-area, multi-object Doppler planet surveys offer a wealth of ancillary science possibilities in addition to the study of extrasolar planets. These include studies of stellar properties, galactic dynamics and binary star science. Binary science studies include searching for low-mass M dwarfs and substellar objects, further exploration of the mass-radius relationship, observational constraints on tidal physics and distance calibration using bright, nearby eclipsing binaries. In this poster, we highlight binary science from Doppler surveys using results from the MARVELS Pilot Project, a precursor instrument to MARVELS that surveyed 650 stars in 2007. Approximately 10% of these targets were found to be binary or substellar objects. One star has a confirmed substellar candidate with a period of 5.69 days and a circular orbit. Assuming a primary host mass of 0.8-1.2 Msolar the companion object has an m*sin(i) of 45-60 MJupiter. We also present analysis of two eclipsing binary systems in the sample. These stars were detected spectroscopically and compared with archival data from SuperWASP, where their eclipsing nature was identified. One target is a circular binary system with a period of 5.7 days and the other is an eccentric binary with a period of 6.2 days, eccentricity of 0.25 and Msecondary 0.5 Msolar assuming Mprimary 1.2 Msolar. By combining data from the Doppler survey and the transit survey, eclipsing binary science can be done with a miniumum of follow-up resources.

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