Gregory W. Henry et al. 2006 The Astronomical Journal 132 2489 doi:10.1086/508684
Gregory W. Henry1, Francis C. Fekel1,3, James R. Sowell2 and Joel S. Gearhart2
Show affiliationsOur differential BV photometric observations, acquired with an automated telescope at Fairborn Observatory, show that HD 71636 is an eclipsing binary. From follow-up red-wavelength spectroscopic observations we classify the primary and secondary as an F2 dwarf and an F5 dwarf, respectively. The system has a period of 5.01329 days and a circular orbit. We used the Wilson-Devinney program to simultaneously solve our BV light curves and radial velocities and determined a number of fundamental properties of the system. Comparison with evolutionary tracks indicates that both stars are well ensconced on the main sequence. The age of the system is about 1.2 billion years.
binaries: close; binaries: eclipsing; binaries: spectroscopic
Issue 6 (2006 December)
Received 2006 June 21, accepted for publication 2006 August 16
Published 2006 November 1
Gregory W. Henry et al. 2006 The Astronomical Journal 132 2489
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