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A Cr-K EMISSION LINE SURVEY IN YOUNG SUPERNOVA REMNANTS WITH CHANDRA
Yang XJ(杨学静); Lu FJ(卢方军); Yang, XJ; Tsunemi, H; Lu, FJ; Chen, L
2009
发表期刊ASTROPHYSICAL JOURNAL
卷号692期号:1页码:894-901
通讯作者[Yang, X. J. ; Lu, F. J.] Chinese Acad Sci, Ctr Particle Astrophys, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Yang, X. J. ; Chen, L.] Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China ; [Tsunemi, H.] Osaka Univ, Dept Earth & Space Sci, Grad Sch Sci, Osaka 5600043, Japan
文章类型Article
摘要We performed aCr-Kemission line survey in young supernova remnants (SNRs) with the Chandra archival data. Our sample includes W49B, Cas A, Tycho, andKepler. We confirmed the existence of the Cr line in W49B and discovered this emission line in the other three SNRs. The line center energies, equivalent widths (EWs), and fluxes of the Cr lines are given. The Cr in Cas A is in a high ionization state, while that in Tycho and Kepler is in a much lower one. We find a good positive correlation between Cr and Fe line center energies, suggesting a common origin of Cr and Fe in the nucleosynthesis, which is consistent with the theoretical predictions. We propose that the EW ratio between Cr and Fe can be used as a supplementary constraint on the progenitors' properties and the explosion mechanism.
关键词ISM: individual (W49B, Cas A, Tycho, Kepler) supernova remnants
学科领域Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
DOI10.1088/0004-637X/692/1/894
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000263553000074
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被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238693
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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Yang XJ,Lu FJ,Yang, XJ,et al. A Cr-K EMISSION LINE SURVEY IN YOUNG SUPERNOVA REMNANTS WITH CHANDRA[J]. ASTROPHYSICAL JOURNAL,2009,692(1):894-901.
APA 杨学静,卢方军,Yang, XJ,Tsunemi, H,Lu, FJ,&Chen, L.(2009).A Cr-K EMISSION LINE SURVEY IN YOUNG SUPERNOVA REMNANTS WITH CHANDRA.ASTROPHYSICAL JOURNAL,692(1),894-901.
MLA 杨学静,et al."A Cr-K EMISSION LINE SURVEY IN YOUNG SUPERNOVA REMNANTS WITH CHANDRA".ASTROPHYSICAL JOURNAL 692.1(2009):894-901.
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