First photometric study of two contact binaries: 1SWASP J15133589-3725239, 1SWASP J22310605-1940584

TANRIVER M. , Guerrero Pena C. A. , Michel Murillo R., Pires R.

New Astronomy, vol.81, 2020 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 81
  • Publication Date: 2020
  • Doi Number: 10.1016/j.newast.2020.101440
  • Title of Journal : New Astronomy
  • Keywords: Stars: binaries: eclipsing, Stars: fundamental parameters, Technique: photometry, Stars: individual (1SWASP J15133589-3725239 1SWASP J22310605-1940584), EFFECTIVE TEMPERATURE SCALE, BOLOMETRIC CORRECTIONS, LIGHT CURVES, STAR LIGHT, COLOR


We present the results of our investigation and first analysis of the geometrical and physical parameters of the 1SWASP J15133589-3725239 and 1SWASP J22310605-1940584 W UMa-type binary systems. Light curve analysis was performed with the PHOEBE0.31a interface program based on the Wilson-Devinney code. New times of minima and light elements have been determined. According to our solution, the 1SWASP J151335893725239 and 1SWASP J22310605-1940584 binary systems are respectively found to be A-and W-type W UMa systems. We derived the following masses and radii for the components of these eclipsing systems: M-1 = 2.578 M-circle dot, M-2 = 1.741 M-circle dot, R-1 = 1.113 R-circle dot and R-2 = 0.928 R-circle dot for 1SWASP J15133589-3725239 and M-1 = 0.743 M-circle dot, M-2 = 0.469 M-circle dot, R-1 = 0.715 R-circle dot and R-2 = 0.578 R-circle dot for 1SWASP J22310605-1940584. The evolutionary state of the systems is also discussed.