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An additional H alpha emission component in LSI+61 degrees 303: Further evidence for the H alpha emission related to the neutron star
Liu, QZ; Yan, JZ
2005-11-01
Source PublicationNEW ASTRONOMY
ISSN1384-1076
Volume11Issue:2Pages:130-137
AbstractA long-term program has been established since 1992 to monitor more than a dozen of observable X-ray binaries. We present the long-term spectroscopic results of the Be/X-ray binary, LSI+61 degrees 303. The Hot emission line, usually observed as a double-peaked profile with a dominant red peak, varies noticeably during our program. While the blue peak of the Hot emission line decreases gradually, the red peak increases considerably in 2002 October observational run and remains relatively unchanged in 2004 September run. We attribute these variations to the asymmetric perturbation in the Be envelope. Finally, we report on the discovery of a two-component structure in the Ha emission line when close to the apastron. In addition to the original double-peaked Ha emission component, an additional emission component emerges at the center part of the emission line, which could originate in the accretion disc around the neutron star. (c) 2005 Elsevier B.V. All rights reserved.
KeywordStars Individual lsi+61 Degrees 303-x-rays Stars-stars Emission-line Be Stars Binaries Close
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.newast.2005.07.002
WOS KeywordLS-I +61-DEGREES-303 ; X-RAY BINARIES ; RADIO OBSERVATIONS ; LIGHT-CURVE ; I+61-DEGREES-303 ; &61-DEGREES-303 ; VARIABILITY ; PERIODICITY ; MODULATION ; JET
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000233303000005
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/4178
Collection宇宙伽马暴、中子星及相关物理研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Liu, QZ,Yan, JZ. An additional H alpha emission component in LSI+61 degrees 303: Further evidence for the H alpha emission related to the neutron star[J]. NEW ASTRONOMY,2005,11(2):130-137.
APA Liu, QZ,&Yan, JZ.(2005).An additional H alpha emission component in LSI+61 degrees 303: Further evidence for the H alpha emission related to the neutron star.NEW ASTRONOMY,11(2),130-137.
MLA Liu, QZ,et al."An additional H alpha emission component in LSI+61 degrees 303: Further evidence for the H alpha emission related to the neutron star".NEW ASTRONOMY 11.2(2005):130-137.
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