A photometric study of a weak-contact binary: V873 Per

作者：Kriwattanawong W^*; Poojon P

来源：New Astronomy, 2015, 36: 50-55.

DOI：10.1016/j.newast.2014.10.004

• Stars: binaries: close
• Stars: binaries: eclipsing
• Stars: individual (V873 Per)

We present a photometric study of a weak-contact binary V873 Per. New observations in BVR filter bands showed asymmetric light curves to be a negative type of the O'Connell effect, which can be described by magnetic activity of a cool spot on the more massive component. Our photometric solutions showed that V873 Per is a W-type with a mass ratio of q = 2.504(+/- 0.0029), confirming the results of Samec et al. (2009). The derived contact degree was found to be f = 18.10%(+/- 136%). Moreover, our analysis found the cyclic variation with the period of about 4 yr that could be due to existence of the third companion in the system or the mechanism of magnetic activity cycle in the binary. While available data indicated that the long-term orbital period tends to be stable rather than decreasing.

• 出版日期2015-4