Long-term optical spectral observations of the Be/X-ray binary LSI+61 degrees 303: evidence of H alpha emission associated with the neutron star

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

	Long-term optical spectral observations of the Be/X-ray binary LSI+61 degrees 303: evidence of H alpha emission associated with the neutron star
	Liu, QZ ; Hang, HR ; Wu, GJ ; Chang, J; Zhu, ZX
刊名	ASTRONOMY & ASTROPHYSICS
	2000-07-01
卷号	359 期号:2 页码:646-650
关键词	stars : binaries : close stars : emission-line, Be stars : individual : LSI+61 degrees 303 X-rays : stars
ISSN号	0004-6361
英文摘要	We present the optical spectra of the periodic radio star LSI +61 degrees 303 with intermediate dispersion. The H alpha emission line profile and its variation an analyzed. Variability in LSI +61 degrees 303 is observed on different timescales. During our observations the equivalent width (EW) of H alpha line showed long-term variability that is likely to be associated with the 4-year period. We suggest that the long-term variability is connected to the intrinsic behaviour of the Be star.
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
关键词[WOS]	LSI +61-DEGREES-303 ; RADIO ; VARIABILITY ; MODULATION ; PERIODICITY
收录类别	SCI
语种	英语
WOS记录号	WOS:000088587000029
公开日期	2013-02-01
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/8282]
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	1.Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100864, Peoples R China 3.Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands 4.Yunnan Observ, Kunming 650011, Peoples R China
推荐引用方式 GB/T 7714	Liu, QZ,Hang, HR,Wu, GJ,et al. Long-term optical spectral observations of the Be/X-ray binary LSI+61 degrees 303: evidence of H alpha emission associated with the neutron star[J]. ASTRONOMY & ASTROPHYSICS,2000,359(2):646-650.
APA	Liu, QZ,Hang, HR,Wu, GJ,Chang, J,&Zhu, ZX.(2000).Long-term optical spectral observations of the Be/X-ray binary LSI+61 degrees 303: evidence of H alpha emission associated with the neutron star.ASTRONOMY & ASTROPHYSICS,359(2),646-650.
MLA	Liu, QZ,et al."Long-term optical spectral observations of the Be/X-ray binary LSI+61 degrees 303: evidence of H alpha emission associated with the neutron star".ASTRONOMY & ASTROPHYSICS 359.2(2000):646-650.