Photometric Studies of EV Cnc and AH Cnc in the Open Cluster M67

作     者：Mamatha Rani G. K.Sriram Deblina Lahiri Vijaya,A. Mamatha Rani G.;K.Sriram;Deblina Lahiri;Vijaya A.

作者机构：Department of AstronomyOsmania UniversityHyderabad 500007India 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2024年第24卷第8期

页      面：196-211页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：support from the SRF INSPIRE(IF 170314)fellowship program,Government of India financial support from the SERB Core Research Grant project,the Government of India 

主　　题：(stars)binaries(including multiple) close-(stars)binaries eclipsing-stars activity 

摘      要：Contact binaries at various stages of evolution unveil various operating mechanisms that drive *** report the photometric and period variation analysis of two contact binaries EV Cnc and AH Cnc in open cluster *** observed the cluster from the JCBT 1.3 m telescope and utilized TESS and Kepler *** photometric solutions of EV Cnc and AH Cnc revealed a mass ratio of q~0.41 and~0.15 with an inclination of i=42°and87°*** solutions suggest that EV Cnc is probably a semi-detached and AH Cnc is a deep low-mass ratio contact *** study of O-C variation analysis indicates that for both systems,the period is increasing which suggests the mass transfer is occurring from secondary to *** the case of AH Cnc and based on simulations by randomly varying the time of minima to fit the LITE solution,we noted the third body orbital period to be around P_(3)=26.82±2.54 yr,which is different from earlier reported values and conclude that future observations are required to confirm this *** compare these two systems with other similar contact binaries to get an estimate of the final configuration of the respective systems.