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A Polarization Sequence for Type Ia Supernovae?
Meng XC(孟祥存)1,2,3; Zhang JJ(张居甲)1,2,3; Han ZW(韩占文)1,2,3; Meng, X.(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2017-05-20
卷号841期号:1
DOI10.3847/1538-4357/aa6f18
产权排序第1完成单位
收录类别SCI
关键词Supernovae: General Techniques: Polarimetric Techniques: Spectroscopic
摘要Early polarization observations of type Ia supernovae (SNe Ia) may reveal the geometry of supernova ejecta, and then put constraints on their explosion mechanism and their progenitor model. We performed a literature search of SNe Ia with polarization measurements and determined the polarization and relative equivalent width (REW) of the Si II 635.5 nm absorption feature at - 5 days after the maximum light. We found that either the distribution of observed polarization degree is bimodal, i.e., the broad-line SNe Ia have systematically higher polarization than all other SNe Ia, or that all types of SNe Ia share the same polarization sequence, i.e., the polarization of the Si II 635.5 nm absorption feature increases with the REW. We also discussed the potential effects that the discovery might have on the explosion mechanism and progenitor model of SNe Ia.
项目资助者NSFC(11473063, 11522327, 11403096, 11390374, 11521303) ; CAS light of West China Program ; CAS(KJZD-EW-M06-01) ; Science and Technology Innovation Talent Programme of the Yunnan Province(2013HA005)
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000402310500048
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DELAYED-DETONATION MODELS ; HIGH-VELOCITY FEATURES ; MASS WHITE-DWARFS ; SPECTROPOLARIMETRY ; EXPLOSION ; DIVERSITY ; SPECTRA ; 2009DC ; STAR ; NUCLEOSYNTHESIS
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10085
专题大样本恒星演化研究组
中国科学院天体结构与演化重点实验室
通讯作者Meng, X.(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Peoples R China)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650216 Kunming, China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China
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GB/T 7714
Meng XC,Zhang JJ,Han ZW,et al. A Polarization Sequence for Type Ia Supernovae?[J]. ASTROPHYSICAL JOURNAL,2017,841(1).
APA Meng XC,Zhang JJ,Han ZW,&Meng, X..(2017).A Polarization Sequence for Type Ia Supernovae?.ASTROPHYSICAL JOURNAL,841(1).
MLA Meng XC,et al."A Polarization Sequence for Type Ia Supernovae?".ASTROPHYSICAL JOURNAL 841.1(2017).
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