A study of the EB-type eclipsing binary GR Tauri with mass transfer

Details A study of the EB-type eclipsing binary GR Tauri with mass transfer A study of the EB-type eclipsing binary GR Tauri with mass transfer

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...423..607g&link_type=abstract

Astronomy and Astrophysics, v.423, p.607-611 (2004)

Astronomy and Astrophysics

Astrophysics

5

Stars: Binaries: Close, Stars: Individual: Gr Tau

Scientific paper

In this paper, new CCD BV light curves of the EB-type eclipsing binary GR Tau, which were obtained in 1999, are analyzed by means of the Wilson-Devinney program. The photometric solution of this system is obtained, and its absolute parameters are also derived. Our study has demonstrated that GR Tau is a near-contact binary system with an almost-contact semidetached configuration in which the primary fills its Roche lobe, and both components are main-sequence stars. The asymmetric shape of the light curves can be explained by a hot spot on the surface of the secondary, which is created by the mass transfer from the primary to the secondary. GR Tau belongs to the V1010 Oph subclass of near-contact binaries, and is a good example of a system in the broken-contact phase predicted by the TRO theory.

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