A CCD photometric study of the short period W Uma type eclipsing binary: FZ Orionis
Vinod Prasad¹, J. C. Pandey², D. C. Srivastava¹ and M. K. Patel¹
¹Department of Physics, DDU Gorakhpur University, Gorakhpur
²Aryabhatta Research Institute of Observational Sciences, Nainital
Email: vinod@aries.res.in, vinod.pdr83@gmail.com

Abstract. We have carried out a new B, V, R and I broadband CCD time series photometry of a contact binary FZ Orionis. The light curves are analyzed by using Wilson-Devinney code. The present analysis shows that FZ Ori is a W-subtype of W Uma contact binary. The mass ratio and temperature difference are determined to be 0.56±0.01 and &\Delta;T=65± 59, respectively. However the radii of primary and secondary components are found to be R1/R_⊙=1.28 and R2/R_⊙=0.98, respectively. The binary system shows small asymmetries in the light curve shape around the primary and secondary maxima. This could be due to the presence of hot spots on the primary component.