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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
Source PublicationASTROPHYSICAL JOURNAL
2017-05-20
Volume841Issue:1
DOI10.3847/1538-4357/aa6f18
Contribution Rank第1完成单位
Indexed BySCI
KeywordSupernovae: General Techniques: Polarimetric Techniques: Spectroscopic
Abstract

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.

Funding ProjectNSFC[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]
Funding OrganizationNSFC(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)
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000402310500048
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDELAYED-DETONATION MODELS ; HIGH-VELOCITY FEATURES ; MASS WHITE-DWARFS ; SPECTROPOLARIMETRY ; EXPLOSION ; DIVERSITY ; SPECTRA ; 2009DC ; STAR ; NUCLEOSYNTHESIS
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10085
Collection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
Corresponding AuthorMeng XC(孟祥存)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Meng XC,Zhang JJ,Han ZW. A Polarization Sequence for Type Ia Supernovae?[J]. ASTROPHYSICAL JOURNAL,2017,841(1).
APA Meng XC,Zhang JJ,&Han ZW.(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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