A Polarization Sequence for Type Ia Supernovae?
文献类型：期刊论文
| 作者 | Meng XC(孟祥存)1,2,3 ; Zhang JJ(张居甲)1,2,3; Han ZW(韩占文)1,2,3
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2017-05-20 |
| 卷号 | 841期号:1 |
| ISSN号 | 0004-637X |
| 关键词 | supernovae: general techniques: polarimetric techniques: spectroscopic |
| 通讯作者 | Meng, X.(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Peoples R China) |
| 产权排序 | 第1完成单位 |
| 英文摘要 | 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. |
| 学科主题 | 天文学 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DELAYED-DETONATION MODELS ; HIGH-VELOCITY FEATURES ; MASS WHITE-DWARFS ; SPECTROPOLARIMETRY ; EXPLOSION ; DIVERSITY ; SPECTRA ; 2009DC ; STAR ; NUCLEOSYNTHESIS |
| 收录类别 | SCI |
| 原文出处 | http://stacks.iop.org/0004-637X/841/i=1/a=62?key=crossref.93afc9acfa7c59911f67957e42580d66 |
| 语种 | 英语 |
| WOS记录号 | WOS:000402310500048 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/10085]  |
| 专题 | 云南天文台_大样本恒星演化研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 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 |
| 推荐引用方式 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). |
入库方式： OAI收割
来源：云南天文台
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