NDLI: Absolute parameters of the close binary BW Boo with a superasynchronous A2m primary component

Content Provider	Springer Nature Link
Author	Glazuva, L. V.
Copyright Year	2011
Abstract	Based on two high-dispersion spectra of the close binary BW Boo, we have detected lines of the secondary component whose contribution to the combined spectrum does not exceed 2%. We have determined the rotation velocities of the components and spectroscopic orbital elements. Numerous lines of neutral and ionized iron have been used to determine the effective temperature and surface gravity for the primary component. The photometric light curves for this binary have been solved for the first time. Its primary component is an A2Vm star with a mass of 2 ± 0.1M $_{⊙}$ and a radius of 1.9 ± 0.4R $_{⊙}$. Its rotation velocity is 2 km s$^{−1}$, which is a factor of 18 lower than the pseudo-synchronous velocity for this component. The G6 secondary component, a T Tau star, has a rotation velocity of 17 km s$^{−1}$, amass of 1.1M $_{⊙}$, and a radius of 1 R $_{⊙}$. The age of the binary has been estimated to be 10$^{7}$ yr.
Starting Page	414
Ending Page	419
Page Count	6
File Format	PDF
ISSN	10637737
Journal	Astronomy Letters
Volume Number	37
Issue Number	6
e-ISSN	15626873
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-06-11
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	close binary stars absolute parameters Am stars stellar age Astronomy, Observations and Techniques Astrophysics and Astroparticles
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

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