Parallaxes and Distance Estimates for Eleven Cataclysmic Binary Stars

Details Parallaxes and Distance Estimates for Eleven Cataclysmic Binary Stars Parallaxes and Distance Estimates for Eleven Cataclysmic Binary Stars

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5117t&link_type=abstract

American Astronomical Society, AAS Meeting #211, #51.17; Bulletin of the American Astronomical Society, Vol. 39, p.818

Astronomy and Astrophysics

Astronomy

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Scientific paper

We will present new distance estimates for eleven cataclysmic binary stars, based on trigonometric parallaxes measured with the 2.4m Hiltner telescope at MDM Observatory. The MDM parallaxes have typical uncertainties of 1 mas. A Bayesian formalism is used to find the most likely distance given the parallax, proper motion, and prior information. Results will be reported for the eclipsing dwarf nova HT Cas, for which our parallax favors a relatively short distance; KT Per, which proves to have a K-dwarf physical companion; the 65-minute double-degenerate system V396 Hya (CE 315); and the low accretion rate-polar MQ Dra (SDSS 1553). We gratefully acknowledge funding from the NSF through grants AST-9987334, AST-0307413, and AST-0708810.

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