A Study of Contact Binaries with Large Temperature Differences between Components

Siwak, M.; Zola, S.; Koziel-Wierzbowska, D.

Artykuł - szczegóły

Tytuł artykułu

A Study of Contact Binaries with Large Temperature Differences between Components

Autorzy

Siwak M. , Zola S. , Koziel-Wierzbowska D.

Wybrane pełne teksty z tego czasopisma

http://acta.astrouw.edu.pl/

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Warianty tytułu

Języki publikacji

Abstrakty

We present an extensive analysis of new light and radial velocity (RV) curves, as well as high quality broadening function (BF) profiles of twelve binary systems for which a contact configuration with large temperature differences between components has been reported in the literature. We find that six systems (V1010 Oph, WZ Cyg, VV Cet, DO Cas, FS Lup, V747 Cen) have near contact configurations. For the remaining systems (CX Vir, FT Lup, BV Eri, FO Hya, CN And, BX And), our solutions of the new observations once again converge in a contact configuration with large temperature differences between the components. However, the bright regions discovered in the BFs for V747 Cen, CX Vir, FT Lup, BV Eri, FO Hya, and CN And, and further attributed to hot spots, shed new light on the physical processes taking place between the components and imply the possibility that the contact configurations obtained from light and RV curve modeling are a spurious result.

Słowa kluczowe

binaries: eclipsing binaries: close stars: fundamental parameters stars: individual: V1010 Oph stars: individual: WZ Cyg stars: individual: VV Cet stars: individual: DO Cas stars: individual: FS Lup stars: individual: V747 Cen stars: individual: CX Vir stars: individual: FT Lup stars: individual: BV Eri stars: individual: FO Hya stars: individual: CN And stars: individual: BX And

Wydawca

Copernicus Foundation for Polish Astronomy

Czasopismo

Acta Astronomica

Rocznik

2010

Tom

Vol. 60, No. 4

Strony

305--336

Opis fizyczny

Bibliogr. 78 poz., rys., tab., wykr.

Twórcy

autor

Siwak M.

siwak@oa.uj.edu.pl

Astronomical Observatory of the Jagiellonian University, ul. Orla 171, 30-244 Kraków, Poland

autor

Zola S.

Astronomical Observatory of the Jagiellonian University, ul. Orla 171, 30-244 Kraków, Poland

autor

Koziel-Wierzbowska D.

Astronomical Observatory of the Jagiellonian University, ul. Orla 171, 30-244 Kraków, Poland

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