Radial Velocity and Light Curves Analysis of the Contact Binary V1073 Cygni

Abstract

In this study complete BV light curves of the W Ursae Majoris binary V1073 Cygni obtained in 2005 are presented. We have used the spectroscopic data of V1073 Cyg obtained by Ahn et al. (1992) for analysis. The analysis of radial velocity and light curves was made with Wilson program (1998) and the geometric and physical elements of the system were derived. By searching the simultaneous solutions of the system, we have determined the masses and radii of the components: 1.64M , 2.275R for the primary component and 0.55M , 1.397R for the secondary component respectively. The effective temperature of 6494 ± 53 (K) for the secondary component was also estimated.

Physical parameters of some close binaries: ET Boo, V1123 Tau, V1191 Cyg, V1073 Cyg and V357 Peg

“…Pribulla et al (2003) gave f = 0.04 and T c = 6650K for V1073 Cyg in their "Catalogue of the field contact binary stars". Jafari et al (2006) …”

Multi-color light curves and orbital period research of eclipsing binary V1073 Cyg

“…The latest mass ratio q = 0.303(17) was presented by Pribulla et al (2006) based on their radialvelocity curve. The fill-out factor has been reported many times, such as f = 0.007 and f = 0.008 (Kondo 1966;Leung & Schneider 1978;Ahn et al 1992;Sezer 1993Sezer , 1994, f = 0.19 (Jafari et al 2006) and f = 0.20 (Sezer 1996). The original classification of the spectral type of the primary star was A3 Vm (Fitzgerald 1964); some other spectral type classifications were also reported as F0n III-IV (Abt & Bidelman 1969), F0n V (Morgan et al 1943) and F0V (Pribulla et al 2006).…”

“…Radial veloc-q = 0.303(17) was presented by Pribulla et al (2006) based on their radial-velocity curve. And the fill-out factor has been reported many times, such as f = 0.007 and f = 0.008 (Kondo, 1966;Leung & Schneider, 1978;Ahn et al, 1992;Sezer, 1993Sezer, , 1994, f = 0.19 (Jafari et al, 2006), and f = 0.20 (Sezer, 1996).…”