V2154 Cyg: an eclipsing binary system as part of a triple system

Details V2154 Cyg: an eclipsing binary system as part of a triple system V2154 Cyg: an eclipsing binary system as part of a triple system

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.485..327r&link_type=abstract

In: Proceedings of the First Eddington Workshop on Stellar Structure and Habitable Planet Finding, 11 - 15 June 2001, Córdoba, S

Computer Science

Stars: Binaries: Eclipsing, Stars: Fundamental Parameters, Techniques: Photometric

Scientific paper

Complete uvby light curves together with a few Crawford Hβ data are presented here for the recently discovered eclipsing binary system V2154 Cyg. New times of primary and secondary minima were observed and an improved orbital period has been determined. This eclipsing binary is probably one of the components of a much wider double star, forming altogether a triple system. A detailed photometric analysis is made using the EBOP code. The results show that the eclipsing pair is a detached system with two late-type stars very different in size. Masses of about M1 = 1.4 Msolar and M2 = 0.8 Msolar are inferred for the components using stellar evolution models. The total mass of the probable triple system is estimated to be of about 3.5 Msolar, leading to a minimum orbital period of about 140 yr for the visual pair.

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