학술논문
Multiplicity and apsidal motion in the eclipsing binary EQ Boo.
Document Type
Article
Author
Source
Subject
*MULTIPLICITY of nuclear particles
*ECLIPSING binaries
*LIGHT curves
*COOL stars (Astronomy)
*MAXIMA & minima
*ASTROPHYSICS
*
*
*
*
*
Language
ISSN
1063-7729
Abstract
We present the first estimates of the relative and absolute parameters of the eclipsing binary EQ Boo based on a light-curve analysis ( P = 5.43, V = 8.8). 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). 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 able to explain the observed anomaly in the behavior of the O-C residuals at times of minima. [ABSTRACT FROM AUTHOR]