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V0644 Ser: An Active Ultrashort Period Contact Binary Star
Research in Astronomy and Astrophysics, 2022Abstract The photometric solutions of the ultrashort period close binary V0644 Ser based on our new complete BVRI light curves are derived by the Wilson–Devininney code. The results show that V0644 Ser is a W-type shallow contact binary, and the third light was found in the
Hu-Shan Xu +3 more
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KIC 4762887: A near-contact binary or an ellipsoidal variable star?
New Astronomy, 2021Abstract KIC 4762887 is a variable star with a very small amplitude discovered by K e p l e r and show the EW-type light curve. We analyzed the light curve of KIC 4762887 by using the 2015 version of the Wilson-Devinney code. The results indicated that it is not a contact binary, maybe not even an eclipsing binary.
Xu-Zhi Li, Liang Liu
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1990
A group of close binary stars named near-contact binaries is defined. They are divided according to their physical characteristics into to two subclasses: V1010 Ophiuchi binaries and FO Virginis binaries. A list of members of the group, their current observational status, and their physical and evolutionary relationship to W Ursa-Majoris binaries is ...
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A group of close binary stars named near-contact binaries is defined. They are divided according to their physical characteristics into to two subclasses: V1010 Ophiuchi binaries and FO Virginis binaries. A list of members of the group, their current observational status, and their physical and evolutionary relationship to W Ursa-Majoris binaries is ...
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Gas–Dynamical Features of the Envelopes of Contact Binary Stars
Astronomy Reports, 2017The results of three-dimensional numerical simulations of the gaseous envelope of a contact binary star with parameters similar to those of SV Cen are presented. The outflow of matter from the vicinity of the Lagrange point L2 leads to the formation of a disk-like common envelope with a radius of order three times the component separation.
V. I. Shematovich +3 more
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Observational Evidence for the Evolution of Contact Binary Stars
1985This paper reviews data relevant to the evolution of contact binary stars. Statistics, photometric surveys, period changes and the results of light curve fitting are reviewed. These data are then compared with evolutionary models.
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Updated catalogue of the light curve solutions of contact binary stars
Astronomische Nachrichten, 2007AbstractThe catalogue of the light curve solutions of contact binary stars was updated. Based on the catalogue data we call the attention to a remarkable gap in the temperature distribution of contact binaries which remained unexplained. The absolute dimensions of the components were calculated in a reliable way. (© 2007 WILEY‐VCH Verlag GmbH & Co.
Sz. Csizmadia +3 more
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A photometric study of the near contact binary star GK Cep
Astronomische Nachrichten, 2001Photoelectric observations of the eclipsing binary GK Cep (BV 382) have been carried out in B and V colors at the Ege University Observatory. Using the (O-C) residuals formed by the photoelectric minima times, an orbital period study of the system was performed.
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Relative Luminosity and Surface Brightness of the Components of Contact Binary Stars
Publications of the Astronomical Society of the Pacific, 1972It is shown that the model of zero-age main-sequence contact binary stars in which a common convective envelope surrounds both stars incorrectly predicts the observed ratios of luminosity and mean surface brightness of the two components of W Ursae Majoris stars.
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Presupernova Evolution of Massive Single and Binary Stars
Annual Review of Astronomy and Astrophysics, 2012Norbert Langer
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