Variable Stars Observed in the Galactic Disk by AST3-1 from Dome A, Antarctica

	Variable Stars Observed in the Galactic Disk by AST3-1 from Dome A, Antarctica
	Wang, Lingzhi; Ma, Bin; Li, Gang; Hu, Yi; Fu, Jianning; Wang, Lifan; Ashley, Michael C. B.; Cui, Xiangqun; Du, Fujia; Gong, Xuefei
刊名	ASTRONOMICAL JOURNAL
	2017
卷号	153 期号:3 页码:104-
英文摘要	AST3-1 is the second-generation wide-field optical photometric telescope dedicated to time-domain astronomy at Dome A, Antarctica. Here, we present the results of an i-band images survey from AST3-1 toward one Galactic disk field. Based on time-series photometry of 92,583 stars, 560 variable stars were detected with i magnitude <= 16.5 mag during eight days of observations; 339 of these are previously unknown variables. We tentatively classify the 560 variables as 285 eclipsing binaries ( EW, EB, and EA), 27 pulsating variable stars (delta Scuti, gamma Doradus, delta Cephei variable, and RR Lyrae stars), and 248 other types of variables ( unclassified periodic, multiperiodic, and aperiodic variable stars). Of the eclipsing binaries, 34 show O'Connell effects. One of the aperiodic variables shows a plateau light curve and another variable shows a secondary maximum after peak brightness. We also detected a complex binary system with an RS CVn-like light-curve morphology; this object is being followed-up spectroscopically using the Gemini South telescope.
语种	英语
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/17431]
专题	中国科学院紫金山天文台
推荐引用方式 GB/T 7714	Wang, Lingzhi,Ma, Bin,Li, Gang,et al. Variable Stars Observed in the Galactic Disk by AST3-1 from Dome A, Antarctica[J]. ASTRONOMICAL JOURNAL,2017,153(3):104-.
APA	Wang, Lingzhi.,Ma, Bin.,Li, Gang.,Hu, Yi.,Fu, Jianning.,...&Zhou, Jilin.(2017).Variable Stars Observed in the Galactic Disk by AST3-1 from Dome A, Antarctica.ASTRONOMICAL JOURNAL,153(3),104-.
MLA	Wang, Lingzhi,et al."Variable Stars Observed in the Galactic Disk by AST3-1 from Dome A, Antarctica".ASTRONOMICAL JOURNAL 153.3(2017):104-.