Absolute and geometric parameters of the W UMa-type contact binary V404 Pegasi

GÜROL B., Terzioglu Z., Gursoytrak S. H., Gokay G., Derman E.

ASTRONOMISCHE NACHRICHTEN, cilt.332, sa.7, ss.690-696, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 332 Sayı: 7
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1002/asna.201111563
  • Dergi Adı: ASTRONOMISCHE NACHRICHTEN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.690-696
  • Anahtar Kelimeler: binaries: eclipsing, stars: fundamental parameters, stars: individual (V404 Peg), LIGHT CURVES, STAR LIGHT, SYSTEMS, TEMPERATURE, CATALOG
  • Ankara Üniversitesi Adresli: Evet

Özet

We present the results of our investigation of the geometrical and physical parameters of the W UMa-type binary V404 Peg from analysis of CCD (BVRI) light curves and radial velocity data. The photometric data were obtained during 2010 at Ankara University Observatory (AUO). Light and radial velocity observations were analyzed simultaneously by using the well-known Wilson-Devinney (2007 revision) code to obtain absolute and geometrical parameters. Our solution indicates that V404 Peg is an A-type overcontact binary with a mass ratio of q = 0.243 and an overcontact degree of f = 32.1 %. Combining our light curves with the radial velocity curves from Maciejewski & Ligeza (2004), we determined the absolute parameters of this system as follows: a = 2.672 R-circle dot, M-1 = 1.175 M-circle dot, M-2 = 0.286 M-circle dot, R-1 = 1.346 Re, and R-2 = 0.710 R-circle dot. Finally, we discuss the evolutionary condition of the system. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim