| QIAN, Shengbang, Liying ZHU, Miloslav ZEJDA, Zdeněk MIKULÁŠEK, J. J. WANG a N. P. LIU. Close-in companions to contact binary stars. European Astronomical Society Publications Series. Cambridge, 2013, roč. 64, č. 1, s. 131-134. ISSN 1633-4760. Dostupné z: https://dx.doi.org/10.1051/eas/1364018. |
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@article{1173411,
author = {Qian, Shengbang and Zhu, Liying and Zejda, Miloslav and Mikulášek, Zdeněk and Wang, J. J. and Liu, N. P.},
article_location = {Cambridge},
article_number = {1},
doi = {http://dx.doi.org/10.1051/eas/1364018},
keywords = {W UMa eclipsing binaries; stellar evolution},
language = {eng},
issn = {1633-4760},
journal = {European Astronomical Society Publications Series},
title = {Close-in companions to contact binary stars},
volume = {64},
year = {2013}
}
TY - JOUR
ID - 1173411
AU - Qian, Shengbang - Zhu, Liying - Zejda, Miloslav - Mikulášek, Zdeněk - Wang, J. J. - Liu, N. P.
PY - 2013
TI - Close-in companions to contact binary stars
JF - European Astronomical Society Publications Series
VL - 64
IS - 1
SP - 131-134
EP - 131-134
SN - 16334760
KW - W UMa eclipsing binaries
KW - stellar evolution
N2 - W 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 main-sequence binaries. One of the possibilities for their origin is that the angular momentums of binary stars are transferred from the central binaries to close-in companions. In this paper, we will summarize some of our recent progresses on searching for close-in companions to contact binary stars, including the closest stellar companion to a contact binary at an orbital separation of about 0.8 AU. Then, based on the observational properties of those close-in companions, the formation and the evolution of contact binaries will be discussed.
ER -
QIAN, Shengbang, Liying ZHU, Miloslav ZEJDA, Zdeněk MIKULÁŠEK, J. J. WANG a N. P. LIU. Close-in companions to contact binary stars. \textit{European Astronomical Society Publications Series}. Cambridge, 2013, roč.~64, č.~1, s.~131-134. ISSN~1633-4760. Dostupné z: https://dx.doi.org/10.1051/eas/1364018.
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