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Detached eclipsing binaries: analysis of BD–00° 3357
Author(s) -
Dimitrov W.,
Kolev D.,
Ligęza P.,
SchwarzenbergCzerny A.
Publication year - 2006
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.200510654
Subject(s) - parallax , physics , astrophysics , star (game theory) , orbital period , astronomy , stars
Detached eclipsing binaries constitute potential accurate distance tracers. They are also useful as the test bench of stellar evolution. In BD–00° 3357 eclipses are partial and its orbital period is 1. d 4. Our combined spectroscopic and photometric solution yields secure parameters of this system. The model of the star was obtained using the Wilson‐Devinney method. As result we obtained a semi major axis of 7.65 R ⊙ and a mass ratio of 0.78. The derived masses and radii are M 1 = 1.73 M ⊙ , M 2 = 1.34 M ⊙ R 1 = 1.78 R ⊙ , R 2 = 1.32 R ⊙ , respectively. These values correspond to the slightly evolved F0 and F6.5 components, both slightly less than 1Gyr old. The distance of the star was estimated to be 310 ± 60 pc, and the corresponding photometric parallax is 3.24 ± 0.74 mas. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)