Akademik Veri Yönetim Sistemi
ASTRONOMISCHE NACHRICHTEN, cilt.327, sa.7, ss.698-704, 2006 (SCI-Expanded)
New BVR light curves and times of minimum light for the short period beta Lyrae system V Tri were analyzed to derive the physical parameters of the system. The light curves were obtained at Ankara University Observatory and at the TOWTAK National Observatory during 5 nights in 2001 and 2002. A new ephemeris is determined for the times of primary minimum. The analysis of the light curves is made using the Wilson-Devinney 2003 code. The present solution reveals that V Tri is a near-contact system with a mass ratio near 0.5. The absolute radii and masses estimated for the components, based on our photometric solution, are R-1 = 1.94 R-circle dot, R-2 = 1.44 R-circle dot, M-1 = 2.68 M-circle dot, M-2 = 1.36 M-circle dot, respectively, for the primary and secondary components. The period variation of the system can be attributed to the light-time effect. With the assumption of a coplanar orbit of the third body its revealed mass is m(3) = 0.17 M-circle dot. (c) 2006 WILEY-VCH Verlag GmbH &Co. KGaA. Weinheim.