Unusual phenomena in the new emission phase of X Persei

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 宇宙伽马暴、中子星及相关物理研究团组

	Unusual phenomena in the new emission phase of X Persei
	Liu, QZ; Hang, HR
刊名	CHINESE ASTRONOMY AND ASTROPHYSICS
	1998-04-01
卷号	22 期号:2 页码:192-197
关键词	Be/X binary emission line JHK photometry
ISSN号	0275-1062
英文摘要	We present a series of optical spectroscopic and infrared photometric observations of the Be/X-ray system X Per in 1992-95. Some phenomena in this new emission phase turn out to be unique in comparison with former observations. First, although the V magnitude only recovered its original maximum brightness from 1974 to 1991, the equivalent width (EW) of H-alpha emission line and JHK magnitudes exceeded the values recorded before, and this means that the circumstellar envelope of X Per in the new emission phase is more extensive and denser. Second, we have for the first time observed in X Per that the EW of H-alpha line increased rapidly while the JHK magnitudes declined considerably. Our optical spectroscopic data support the rotating ring model of the envelope and confirm the existence of the double-ring structure, with which the observed unusual phenomena may be fairly well interpreted.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
收录类别	SCI
语种	英语
WOS记录号	WOS:000082336500010
公开日期	2013-02-05
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/8358]
专题	紫金山天文台_宇宙伽马暴、中子星及相关物理研究团组
作者单位	Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Liu, QZ,Hang, HR. Unusual phenomena in the new emission phase of X Persei[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,1998,22(2):192-197.
APA	Liu, QZ,&Hang, HR.(1998).Unusual phenomena in the new emission phase of X Persei.CHINESE ASTRONOMY AND ASTROPHYSICS,22(2),192-197.
MLA	Liu, QZ,et al."Unusual phenomena in the new emission phase of X Persei".CHINESE ASTRONOMY AND ASTROPHYSICS 22.2(1998):192-197.