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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 ...
J. S. Shaw
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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 ...
J. S. Shaw
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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.
S. Mochnacki
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A Study of Ten Early-type Contact Binary Stars in the Small Magellanic Cloud
Publications of the Astronomical Society of the Pacific, 2023To study early-type binary systems in different evolutionary stages or environments, the Small Magellanic Cloud (SMC) is an ideal laboratory due to its low metallicity compared to that of the Milky Way.
Chu-Qi Wu +6 more
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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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Close-in companions to contact binary stars
EAS Publications Series, 2013W UMa-type contact binaries are composed of two late-type main-sequence stars, where both components are filling their critical Roche Lobes and sharing a common convective envelope. Their formation and evolution are unsolved problems in stellar astrophysics. This kind of binary systems have the lowest angular momentum and shortest orbital periods among
S.B. Qian +5 more
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Multiplicity of Contact Binary Stars
2007We present results of a preliminary investigation of triple star incidence for contact binary stars. The goal is to shed light on the possible role of distant companions which may have acquired and/or absorbed AM during evolution of multiple systems facilitating or enabling formation of contact binaries.
T. Pribulla, S.M. Rucinski
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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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Monthly notices of the Royal Astronomical Society
This paper presents the photometric and spectroscopic analysis of a long-period totally eclipsing contact binary (HAT 307-0007476) for the first time. This system is a low mass ratio (q ∼ 0.114) and medium contact binary (f ∼ 37.1 %).
Ling-Zhi Li +11 more
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This paper presents the photometric and spectroscopic analysis of a long-period totally eclipsing contact binary (HAT 307-0007476) for the first time. This system is a low mass ratio (q ∼ 0.114) and medium contact binary (f ∼ 37.1 %).
Ling-Zhi Li +11 more
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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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UV Flux Variation Study in Contact Binary VW Cephei
Despite many attempts, the origin of UV emission line and continuum in contact binary stars remains unclear. We present a substantial UV spectroscopic analysis of VW Cephei, a late-type contact binary system, using 46 low-resolution spectra from the ...
Anurag Baruah, M. Pahari
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