Multiplicity and apsidal motion in the eclipsing binary EQ Booстатья
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Дата последнего поиска статьи во внешних источниках: 12 ноября 2013 г.
Аннотация:We present the first measurements of the relative and absolute parameters of the eclipsing binary EQ Boo based on a light-curve analysis ( P = 5.43d, V = 8.8 m ). This star is simultaneously Component A of the visual binary ADS 9422 (spectral types F7V + G0V; separation of the components 1.3″; magnitude difference 0.7 m ). The derived disagreement between the components' physical parameters and the assumption that they have the same age can be removed if there is a fourth, late-type star in the system. This is also explains the observed anomaly in the behavior of the O-C residuals in minimae timings.