PHOTOMETRIC STUDY OF A W UMa TYPE CONTACT BINARY AH CNC

• DOI: 10.5140/jass.2003.20.4.249
• Publication Date: 2010-09-09T06:43:03Z
• Authors: Jae Woo Lee; Kap-Soo Oh; Seung-Lee Kim; Ho-Il Kim; Jae-Man Kyeong; Jae-Hyuck Youn; Eon-Chang Sung
• Keywords: AH Cnc; CCD observation; photometric solution; Astronomy; 0103 physical sciences; QB1-991; eclipsing binary; 01 natural sciences

CCD photometric observations of a W UMa type contact binary AH Cnc were performed for ten nights from December 1998 to May 1999 using a PM512 CCD camera and BVI filters attached to the 61cm reflector at Sobaeksan Optical Astronomy Observatory. New BVI light curves were analyzed with contact Mode 3 of the Wilson-Devinney binary model. We obtained photometric solutions and Roche geometry of this binary system. Through the analysis of the (O-C) diagram with all times of minimum light published so far and including hour's secular variations of orbital period and the mass transfer rate were calculated.