On the overcontact binary V2388 Oph and an improved M-R relation for LTCBs

Yakut K.

ASTROPHYSICS AND SPACE SCIENCE, cilt.296, ss.273-276, 2005 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 296
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1007/s10509-005-4829-9
  • Dergi Adı: ASTROPHYSICS AND SPACE SCIENCE
  • Sayfa Sayıları: ss.273-276

Özet

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.