Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5487785 | New Astronomy | 2017 | 17 Pages |
Abstract
07g-3-00820 is a K-type contact binary system with a period of 0.2269551 days. This extremely short period makes this system a rare target whose period is close to the empirical limit (0.22 days). Rc and Ic light curves of this binary were obtained using the 1.0 m reflecting telescope at Weihai Observatory of Shandong University. A high mass ratio of q = 1.300 ±  0.006 and a low contact degree of f=5%±1.5% were determined from a photometric study using the Wilson-Devinney method. The following parameters of this W-subtype shallow contact system were derived: M1=0.621±0.072Mâ,M2=0.807±0.093Mâ,R1=0.634±0.036Râ,R2=0.710±0.037Râ,L1=0.270±0.037Lâ, and L2=0.339±0.048Lâ. By analyzing the location of the two components on the mass-luminosity diagram, we provide a preliminary discussion on the properties and the state of evolution of this system.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
H.-Y. Gao, K. Li, Q.-C. Li, S. Ma,