Absolute Parameters of Three F Type Southern Eclipsing Binary Stars: VW Ret, FW Vel, and CW Eri

• Autorzy: Zasche, P. , Sürgit, D. , Erdem, A. , Marang, F. , Engelbrecht, C. A.
• Języki publikacji: EN

Abstrakty

EN

This study presents the first detailed analysis of three southern eclipsing binaries. Both - light curves and radial velocity curves - were studied together with their period changes, revealing basic physical and orbital properties of these systems. All three stars, VW Ret, FW Vel, and CW Eri are detached binaries with a few days orbital period. Thanks to our detailed analysis we revealed that all the component stars are slightly heavier than the Sun, laying in the mass range between 1.3 M_☉ and 1.6 M_☉. The systems VW Ret, and FW Vel seem to have more dominant secondary components, both in the masses, as well as in luminosities. The system VW Ret is a triple star showing large eclipse times variations with the periodicity of 4 yr. For FW Vel a similar weak variation was also found, but with much lower amplitude of about 56 s only, needed to be independently confirmed. CW Eri shows slightly eccentric orbit (e=0.015), but only very slow apsidal motion. Moreover, its ages for both component do not agree with each other very well. Hence, it provides a challenge for future more detailed modeling of this interesting system.

Słowa kluczowe

EN

binaries: eclipsing; stars: fundamental parameters; binaries: spectroscopic

• Czasopismo: Acta Astronomica
• Rocznik: 2024
• Tom: Vol. 74, No. 2
• Strony: 113--133
• Opis fizyczny: Bibliogr. 57 poz., tab., wykr.

Twórcy

autor

Zasche, P.

• Charles University, Faculty of Mathematics and Physics, Astronomical Institute, V Holešovičkách 2, CZ-180 00, Praha 8, Czech Republic

autor

Sürgit, D.

• Astrophysics Research Center and Ulupınar Observatory, Çanakkale Onsekiz Mart University, TR-17100, Çanakkale, Türkiye
• Department of Space Sciences and Technologies, Faculty of Science, Çanakkale Onsekiz Mart University, Terzioğlu Kampüsü, TR-17100, Çanakkale, Türkiye

autor

Erdem, A.

• Astrophysics Research Center and Ulupınar Observatory, Çanakkale Onsekiz Mart University, TR-17100, Çanakkale, Türkiye
• Department of Physics, Faculty of Science, Çanakkale Onsekiz Mart University, Terzioğlu Kampüsü, TR-17100, Çanakkale, Türkiye

autor

Marang, F.

• Department of Physics, University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa

autor

Engelbrecht, C. A.

• Department of Physics, University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa

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Identyfikatory

DOI

10.32023/0001-5237/74.2.2