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Title:
HD 71636, A Newly Discovered Eclipsing Binary
Authors:
Henry, Gregory W.; Fekel, Francis C.; Sowell, James R.; Gearhart, Joel S.
Affiliation:
AA(Center of Excellence in Information Systems, Tennessee State University, 3500 John A. Merritt Boulevard, Box 9501, Nashville, TN 37209; , ), AB(Center of Excellence in Information Systems, Tennessee State University, 3500 John A. Merritt Boulevard, Box 9501, Nashville, TN 37209; , ), AC(School of Physics, Georgia Institute of Technology, Atlanta, GA 30332; ), AD(School of Physics, Georgia Institute of Technology, Atlanta, GA 30332; )
Publication:
The Astronomical Journal, Volume 132, Issue 6, pp. 2489-2495. (AJ Homepage)
Publication Date:
12/2006
Origin:
UCP
AJ Keywords:
Stars: Binaries: Close, Stars: Binaries: Eclipsing, Stars: Binaries: Spectroscopic
DOI:
10.1086/508684
Bibliographic Code:
2006AJ....132.2489H

Abstract

Our 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.
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