Four color light curves and period changes investigation of the contact binary BX Peg
作者： Kai Li , Shaoming Hu , Difu Guo , Yunguo Jiang , Dongyang Gao
DOI: 10.1016/J.NEWAST.2015.04.010
关键词:
摘要: We presented BVRcIc light curves of BX Peg obtained by the Weihai Observatory 1.0-m telescope Shandong University. The W-D code was used to analyze four color curves, it is shown that a W-subtype shallow contact binary with fill-out factor f = 14.6%. asymmetric were explained dark spot on less massive hot component. A total 328 times minimum study orbital period variation Peg. found continuous decrease rate dp/dt -2.07 x 10(-7) d yr(-1) superimposed cyclic oscillation 57.8 yr. secular should be caused angular momentum loss via magnetic stellar wind. modulation very likely produced travel time effect due tertiary companion. (C) 2015 Elsevier B.V. All rights reserved.
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Daniel Fabrycky, Scott Tremaine, Shrinking binary and planetary orbits by Kozai cycles with tidal friction The Astrophysical Journal. ,vol. 669, pp. 1298- 1315 ,(2007) , 10.1086/521702
Jae Woo Lee, Chun-Hwey Kim, Wonyong Han, Ho-Il Kim, Robert H. Koch, Period and light variations for the cool, overcontact binary BX Pegasi Monthly Notices of the Royal Astronomical Society. ,vol. 352, pp. 1041- 1055 ,(2004) , 10.1111/J.1365-2966.2004.07996.X
R. E. Wilson, Accuracy and efficiency in the binary star reflection effect The Astrophysical Journal. ,vol. 356, pp. 613- 622 ,(1990) , 10.1086/168867
James H. Applegate, A Mechanism for Orbital Period Modulation in Close Binaries The Astrophysical Journal. ,vol. 385, pp. 621- 629 ,(1992) , 10.1086/170967
Robert E. Wilson, Edward J. Devinney, Realization of Accurate Close-Binary Light Curves: Application to MR Cygni The Astrophysical Journal. ,vol. 166, pp. 605- ,(1971) , 10.1086/150986
John B. Irwin, The Determination of a Light-Time Orbit. The Astrophysical Journal. ,vol. 116, pp. 211- ,(1952) , 10.1086/145604
Ronald G. Samec, Photometric investigation of a very short-period binary - Is BX Pegasi undergoing continuous angular momentum losses? The Astronomical Journal. ,vol. 100, pp. 808- ,(1990) , 10.1086/115563
K. Li, S.-B. Qian, S.-M. Hu, J.-J. He, THE TRIPLE BINARY STAR EQ TAU WITH AN ACTIVE COMPONENT The Astronomical Journal. ,vol. 147, pp. 98- ,(2014) , 10.1088/0004-6256/147/5/98
S.-B. Qian, N.-P. Liu, W.-P. Liao, J.-J. He, L. Liu, L.-Y. Zhu, J.-J. Wang, E.-G. Zhao, FIRST PHOTOMETRIC INVESTIGATION OF THE NEWLY DISCOVERED W UMa-TYPE BINARY STAR MR Com The Astronomical Journal. ,vol. 146, pp. 38- ,(2013) , 10.1088/0004-6256/146/2/38
Ronald G. Samec, Douglas P. Hube, BX Pegasi. II. Spectroscopic Observations and Simultaneous Synthetic Photometric-Spectroscopic Solution The Astronomical Journal. ,vol. 102, pp. 1171- ,(1991) , 10.1086/115943