Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327..899d&link_type=abstract
Astronomische Nachrichten, Vol.327, Issue 9, p.899
Astronomy and Astrophysics
Astronomy
Binaries: Eclipsing, Binaries: Spectroscopic, Stars: Individual Bd -00°3357
Scientific paper
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 1.4 °. 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\sun and a mass ratio of 0.78. The derived masses and radii are M_1=1.73 M\sun, M_2=1.34 M\sun R_1=1.78 R\sun, R_2=1.32 R\sun, respectively. These values correspond to the slightly evolved F0 and F6.5 components, both slightly less than 1 Gyr old. The distance of the star was estimated to be 310±60 pc, and the corresponding photometric parallax is 3.24±0.74 mas.
Based on spectroscopic observation collected at the National Astronomical Observatory Rozhen, Bulgaria and David Dunlop Observatory, Canada. We use photometric observations in the I and V bands from ASAS (All Sky Automated Survey).
Dimitrov Wojciech
Kolev D.
Ligeza Piotr
Schwarzenberg-Czerny Aleksander
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