Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj....100..233w&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 100, July 1990, p. 233-238. Research supported by Kutztown University.
Astronomy and Astrophysics
Astronomy
4
Eclipsing Binary Stars, Light Curve, Algorithms, Astronomical Models, Kepler Laws, Orbital Elements
Scientific paper
This work presents the analyses of two UBV data sets for the Algol binary ST Carinae, presenting a homogeneous study of all the data. The light-curve parameters for the system are derived using the Wilson-Devinney model (1917), with the SIMPLEX algorithm as an optimization procedure, and a mass ratio of q=0.54 is obtained. The primary has colors consistent with a B9.5 V primary, and the solution indicates that the secondary is an F subgiant (Te=6200 K) that fills its Roche lobe. The application of Kepler's law (using the observed period and the mass ratio determined in this investigation) indicates that the absolute dimensions for the components are normal for their respective classes. A description of SIMPLEX is given, and its advantages for the solution of eclipsing binary parameters are discussed.
Chambliss Carlson R.
Walker Raymond L.
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