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 (Peer-Reviewed Journal) identifier

  • Publication Type: Article / Article
  • Volume: 29
  • Publication Date: 2020
  • Doi Number: 10.1515/astro-2020-0013
  • Journal Name: OPEN ASTRONOMY
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.72-80
  • Keywords: photometry, ephemeris, sinusoidal, individual: V1848 Ori


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.