Other
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006kfnt...22..363z&link_type=abstract
Kinematika i Fizika Nebesnykh Tel, vol. 22, no. 5, p.363-373
Other
1
Scientific paper
New UBVR photoelectric observations of the eclipsing variable star V456 Cyg of Algol type were obtained at the Maidanak Observatory in 1999-2003. The new ephemeris of the binary is: Min I=JDH2444911.3592(7) + {0.89119484 (14)d}\cdot{E} + {0.15(1)}d\cdot 10-9{\cdot E2}. All of the light curves of the star V456 Cyg were solved by Lavrov's direct method, and elements of the photometric orbit were calculated. The results obtained in R-curve are different from data for other ones. We estimated the absolute basic parameters of the components: M1=2.0M&sun;, M2 = 1.7M&sun;, R1=1.7R&sun;, R2 = 1.6R&sun;, M1, bol = +1.7m, M2,bol = +2.5m. The components do not reach ZAMS in the H-R diagram and their age is 107 yrs. The distance for the star V456 Cyg is about 600 pc. The star lies in a well-maked OB-stars group separated by a distance of about 500 pc in the direction of the OB-association Cyg OB1.
Eshankulova M. U.
Zakirov Mamnun M.
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