Abstract Details
| Name: Ravi Raja Pothuneni Affiliation: Department of Astronomy Osmania University Conference ID: ASI2022_501 Title : V2840 Cyg-A rare weak-contact binary evolving into a broken-contact phase or a deep-contact phase? Authors and Co-Authors : Ravi Raja Pothuneni, Shanti Priya Devarapalli and Rukmini Jagirdar Abstract Type : Poster Abstract Category : Stars, ISM and Galaxy Abstract : Contact Binaries(CBs) of EW-type eclipsing binaries are significant in studying and understanding the fundamental stellar properties and their evolution.Among them, High Mass Ratio Contact Binaries (HMRCBs), especially weak-contact configuration, becomes vital in investigating and testing the formation and evolutionary models of CBs using stellar parameters derived from the high-precision photometric and spectroscopic studies. From the period variation studies, these are known to evolve from the present contact configuration into a broken-contact configuration as per Thermal Relaxation Oscillation (TRO) model or into a deep-contact configuration as per Angular Momentum Loss (AML)model. In the current study, V2840 Cyg (VCyg), a short period EW type weak-contact HMRCB, which is rare of its kind is tested and discussed for the TRO and AML models based on period variation exhibited by VCyg. |