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Light curve modeling of the short-period W UMa star GSC 02049-01164

Published online by Cambridge University Press:  27 October 2016

Lester Fox-Machado ,
Juan Echevarria ,
Diego González-Buitrago  and
Raul Michel
Lester Fox-Machado
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Ap. P. 877, Ensenada, BC 22860, México email: lfox@astro.unam.mx
Juan Echevarria
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Ap. P. 70-264, México, D.F. 04510, Mexico
Diego González-Buitrago
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Ap. P. 70-264, México, D.F. 04510, Mexico
Raul Michel
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Ap. P. 877, Ensenada, BC 22860, México email: lfox@astro.unam.mx
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Abstract

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The preliminary results of an analysis of the time-series photometric data of binary star GSC 02049-01164 (ROTSE1 J164341.65+251748.1) are presented. GSC 02049-01164 was observed for eight consecutive nights with the 0.84-m telescope of the San Pedro Martir Observatory in Mexico. The light curve of GSC 02049-01164 is typical of those of W UMa type binary stars. In an effort to gain a better understanding of the binary system and determine its physical properties we have analyzed the light curve with the software PHOEBE V.0 0.31a. We have found that GSC 02049-01164 binary system has a mass ratio of ~ 0.42, an inclination of ~ 85 degrees, a semi-major axis of ~ 2.24 R⊙. It is likely that the two stellar components are in contact, with a degree of overcontact of 13%. The physical parameters of the stellar components have been derived.

Keywords

binaries: eclipsingstars: individual (GSC 02049-01164)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 536 - 539
Copyright
Copyright © International Astronomical Union 2016 

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