Close-in companions to contact binary stars

J 2013

Close-in companions to contact binary stars

QIAN, Shengbang; Liying ZHU; Miloslav ZEJDA; Zdeněk MIKULÁŠEK; J. J. WANG et al.

Základní údaje

Originální název

Close-in companions to contact binary stars

Autoři

QIAN, Shengbang; Liying ZHU; Miloslav ZEJDA; Zdeněk MIKULÁŠEK; J. J. WANG a N. P. LIU

Vydání

European Astronomical Society Publications Series, Cambridge, 2013, 1633-4760

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/13:00072755

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1051/eas/1364018

Klíčová slova anglicky

W UMa eclipsing binaries; stellar evolution

Štítky

AKR, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 26. 3. 2014 15:46, doc. RNDr. Miloslav Zejda, Ph.D.

Anotace

V originále

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.

Návaznosti

LH12175, projekt VaV

Název: Studium vybraných téměř kontaktních dvojhvězd (Akronym: NCBS)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Studium vybraných téměř kontaktních zákrytových dvojhvězd

Citovat

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://doi.org/10.1051/eas/1364018.

@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 = {https://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://doi.org/10.1051/eas/1364018.

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