Unusual phenomena in the new emission phase of X Persei | |
Liu, QZ; Hang, HR | |
刊名 | CHINESE ASTRONOMY AND ASTROPHYSICS
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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. |
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