New Value of Apsidal Motion Velocity and Physical Parameters of the Triple Eclipsing System AS Camстатья
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Дата последнего поиска статьи во внешних источниках: 17 апреля 2024 г.
Аннотация:Applying a new approach to the measurement of the rate of apsidal motion in the system AS Cam(P = 3.43 d, V=8.58 mag, e = 0.17, Sp=B7.5V+B9.0V), we obtained the value dω/dt=0.38°/yr, which is not aslarge as results of earlier measurements differs from the theoretical value for synchronized motion dω/dt=0.44°/yr. Previous generally accepted value was three times lower. Physical parameters of the componentshave been refined: T1 = 12980 ± 150K, M1 = 3.21 ± 0.03Msun, R1 = 2.46 ± 0.01Rsun, T2 = 10850 ± 100K, M2 = 2.32 ± 0.03Msun, R2 = 1.84 ± 0.01Rsun. For the first time, a reliable orbit and physical parameters of theinvisible satellite, the third body in the system, have been determined: P = 2.21 yr, ω = 88°, e = 0.70, M3 sin i = 0.97 ± 0.01Msun.