Mass Transfer and Intrinsic Light Variability in the Contact Binary MT Cas
Joint Authors
Dai, Haifeng
Yuan, Huiyu
Yang, Yuangui
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-04-04
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
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 VRc 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 q=2.365(±0.005) and a fill-out factor of f=16.6(±1.2)%, respectively.
The asymmetric LCs in 2013 are modeled by a dark spot on the more massive component.
By analyzing the (O-C) curve, it is discovered that the orbital period may be undergoing a secular increase at a rate of dP/dt=1.12(±0.09)×10-8d yr-1, 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.
American Psychological Association (APA)
Dai, Haifeng& Yuan, Huiyu& Yang, Yuangui. 2019. Mass Transfer and Intrinsic Light Variability in the Contact Binary MT Cas. Advances in Astronomy،Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1114396
Modern Language Association (MLA)
Dai, Haifeng…[et al.]. Mass Transfer and Intrinsic Light Variability in the Contact Binary MT Cas. Advances in Astronomy No. 2019 (2019), pp.1-9.
https://search.emarefa.net/detail/BIM-1114396
American Medical Association (AMA)
Dai, Haifeng& Yuan, Huiyu& Yang, Yuangui. Mass Transfer and Intrinsic Light Variability in the Contact Binary MT Cas. Advances in Astronomy. 2019. Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1114396
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1114396