A preliminary light-curve analysis for the early-type binary HD 219634

Journal Article · Sat Dec 01 00:00:00 EST 1990 · Publications of the Astronomical Society of the Pacific; (USA)

DOI:https://doi.org/10.1086/132778· OSTI ID:6002990

Martin, B E; Hube, D P; Lyder, D A ^[1]

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1. King's College, Edmonton (Canada) Alberta Univ., Edmonton (Canada)

Differential B and V light curves are presented for the early-type double-lined binary HD 219634. A model has been fitted to the light curves, and to the light- and radial velocity curves in combination, using the Wilson-Divinney code which has been adapted to run on a microcomputer. The system is found to be detached, the filling factors for the two components being F(1) = O.49 and F(2) =0.86. The mass of the primary component appears to be relatively low for its spectral type but is consistent with the derived radius, according to published relationships among those parameters. 17 refs.

• OSTI ID: 6002990
• Journal Information: Publications of the Astronomical Society of the Pacific; (USA), Vol. 102; ISSN 0004-6280
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
STAR MODELS
BRIGHTNESS
COMPUTER CODES
ECLIPSE
MASS
PHOTOMETRY
RADIAL VELOCITY
ROCHE EQUIPOTENTIALS
MATHEMATICAL MODELS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
STARS
VELOCITY
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources