Fundamental Parameters of Two Eclipsing Binaries: HD 42401 and HD 81389

Details Fundamental Parameters of Two Eclipsing Binaries: HD 42401 and HD 81389 Fundamental Parameters of Two Eclipsing Binaries: HD 42401 and HD 81389

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21343209w&link_type=abstract

American Astronomical Society, AAS Meeting #213, #432.09; Bulletin of the American Astronomical Society, Vol. 41, p.300

Astronomy and Astrophysics

Astrophysics

Scientific paper

Fundamental astrophysical parameters for early type stars are needed to constrain theoretical models. I present here the analysis of two systems investigated as part of an ongoing project to find early type stars in eclipsing binary systems. Spectroscopy was obtained at the KPNO Coude Feed telescope, while V-band photometry was taken from the All Sky Automated Survey third data release. A combined analysis of these data yields masses, radii, effective temperatures, gravities, and estimates for the ages and distances of each system. HD 42401 is a B-star binary previously used as a B2 V spectral template. HD 81389 was originally identified as an early type system, but the spectra show it is a late A or early F system with nearly equal mass components.

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