Asset Details
Do you wish to reserve the book?
The First Photometric and Spectroscopic Study of Contact Binary V2840 Cygni
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
The First Photometric and Spectroscopic Study of Contact Binary V2840 Cygni
Do you wish to request the book?
The First Photometric and Spectroscopic Study of Contact Binary V2840 Cygni
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Paper
The First Photometric and Spectroscopic Study of Contact Binary V2840 Cygni
2023
Overview
The first photometric, spectroscopic, and period variation studies of neglected short-period eclipsing binary V2840 Cygni are presented. High Mass Ratio Contact Binaries, especially those in the weak-contact configuration are vital while probing into the evolutionary models of CBs using stellar parameters. The photometric solutions reveal the weak-contact nature of V2840 Cygni with a high mass ratio (\\(\\sim1.36\\)), motivating us to investigate the nature of such binaries. The period variation study of V2840 Cygni spanning for 15 years shows a secular period decrease at a rate of \\(\\sim5.5\\times10^{-7}\\)d/yr indicating mass transfer between the components. The superimposed cyclic variation provides a basic understanding of the possible third body (P\\(_3\\) \\(\\sim8\\) yr, m\\(_3\\) \\(\\sim0.51\\)M\\(_\\odot\\)). Following the derived parameters, the evolution of the system is discussed based on Thermal Relaxation Oscillation (TRO) model. It is found that V2840 Cygni falls in a special category of HMRCBs, that validates TRO. To characterise the nature of HMRCBs, a catalog of 59 CBs with high mass ratios has been compiled along with their derived parameters from the literature. For all the HMRCBs in the study, a possible correlation between their contact configuration and observed period variations for relative log\\emph{J\\(_{rel}\\)} is discussed. The spectroscopic study of V2840 Cygni provides evidence of the presence of magnetic activity in the system and the existence of ongoing mass transfer which is additionally deduced from the period variation study. The LAMOST spectra of 17 HMRCBs are collected to interpret the stellar magnetic activity in such systems.
Publisher
Cornell University Library, arXiv.org
