Corpus ID: 119363122

Variability in the Milky Way: Contact binaries as diagnostic tools

  title={Variability in the Milky Way: Contact binaries as diagnostic tools},
  author={R. Grijs and X. Chen and L. Deng},
  journal={arXiv: Solar and Stellar Astrophysics},
  • R. Grijs, X. Chen, L. Deng
  • Published 2016
  • Computer Science, Physics
  • arXiv: Solar and Stellar Astrophysics
  • We used the 50 cm Binocular Network (50BiN) telescope at Delingha Station (Qinghai Province) of Purple Mountain Observatory (Chinese Academy of Sciences) to obtain simultaneous $V$- and $R$-band observations of the old open cluster NGC 188. Our aim was a search for populations of variable stars. We derived light-curve solutions for six W Ursae Majoris (W UMa) eclipsing-binary systems and estimated their orbital parameters. The resulting distance to the W UMas is independent of the physical… CONTINUE READING