New Data on the Eclipsing Binary V1848 Ori and Improved Orbital and Light Curve Solutions

Davoudi F., Poro A., Aliçavuş F. , Halavati A., Doostmohammadi S., Shandadi A., ...More

OPEN ASTRONOMY, vol.29, pp.72-80, 2020 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 29
  • Publication Date: 2020
  • Doi Number: 10.1515/astro-2020-0013
  • Title of Journal : OPEN ASTRONOMY
  • Page Numbers: pp.72-80


New observations of the eclipsing binary system V1848 Ori were carried out using the V filter resulting in a determination of new times of minima and new ephemeris were obtained. We presented the first complete analysis of the system's orbital period behavior and analysis of O-C diagram done by the GA and MCMC approaches in OCFit code. The O-C diagram demonstrates a sinusoidal trend in the data; this trend suggests a cyclic change caused by the LITE effect with a period of 10.57 years and an amplitude of 7.182 minutes. It appears that there is a third body with mass function of f (m(3)) = 0.0058 M-circle dot in this binary system. The light curves were analyzed using the Wilson-Devinney code to determine some geometrical and physical parameters of the system. These results show that V1848 Ori is a contact W UMa binary system with the mass ratio of q = 0.76 and a weak fillout factor of 5.8%. The O'Connell effect was not seen in the light curve and there is no need to add spot.