Mass Transfer and Intrinsic Light Variability in the Contact Binary MT Cas

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ID: 7716
2019
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Abstract
First CCD photometry for the contact binary MT Cas is performed in 2013 in December. The spectral type of F8V is determined from the low-precision spectrum observed on 2018 Oct 22. With Wilson-Devinney code, the photometric solutions are deduced from light curves (LCs) and AAVSO’s and ASAS-SN’s data, respectively. The results imply that MT Cas is a W-type weak-contact binary with a mass ratio of and a fill-out factor of , respectively. The asymmetric LCs in 2013 are modeled by a dark spot on the more massive component. By analyzing the curve, it is discovered that the orbital period may be undergoing a secular increase at a rate of , which may result from mass transfer from the less massive component to the more massive one. With mass transferring, MT Cas may evolve into a broken-contact configuration as predicted by TRO theory.
Reference Key
haifeng2019massadvances Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Dai, Haifeng;Yuan, Huiyu;Yang, Yuangui;Dai, Haifeng;Yuan, Huiyu;Yang, Yuangui;
Journal advances in astronomy
Year 2019
DOI
10.1155/2019/4593092
URL
https://www.hindawi.com/journals/aa/2019/4593092/abs/
Keywords Keywords not found

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