On the Overcontact Binary V2388 Oph and An Improved M–R Relation for Ltcbs |
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Authors: | Kadri Yakut |
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Affiliation: | (1) Department of Astronomy and Space Sciences, Faculty of Science, University of EGE, Bornova 35100, ízmir, Turkey |
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Abstract: | The evolutionary stage of the low-temperature contact binary (LTCB) V2388 Oph has been investigated. V2388 Oph was previously classified as an A-type W UMa star, and is the brighter member of the visual binary Fin 381. When compared to other well-known LTCBs it is evident that the primary component has evolved to the TAMS, and the companion also seems to be more evolved than a ZAMS star. Mochnacki proposed a new subgroup of W UMa stars, namely of OO Aql type, distinct from A and W types. V2388 Oph is suggested to be a member of this new group. |
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Keywords: | stars binaries eclipsing-stars binaries visual-stars fundamental parameters stars individual V2388 Oph-techniques photometry |
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