THE OXYGEN FEATURES IN TYPE Ia SUPERNOVAE AND IMPLICATIONS FOR THE NATURE OF THERMONUCLEAR EXPLOSIONS
文献类型：期刊论文
| 作者 | Zhao, Xulin1,2,3; Maeda, Keiichi2,4; Wang, Xiaofeng1; Wang, Lifan5; Sai, Hanna1; Zhang JJ(张居甲)6,7 ; Zhang, Tianmeng8; Huang, Fang1; Rui, Liming1
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2016-08-01 |
| 卷号 | 826期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | methods: data analysis supernovae: general techniques: spectroscopic |
| 通讯作者 | Zhao, XL |
| 产权排序 | 第六完成单位 |
| 英文摘要 | The absorption feature OI lambda 7773 is an important spectral indicator for type Ia supernovae (SNe Ia) that can be used to trace the unburned material in outer layers of the exploding white dwarf (WD). In this work, we use a large sample of SNe Ia to examine this absorption at early phases (i.e., -13 day less than or similar to t less than or similar to -7 day) and make comparisons with the absorption features of Si II lambda 6355 and the Ca II near-infrared triplet. We show that for a subgroup of spectroscopically normal SNe with normal photospheric velocities (i.e., v(si) less than or similar to 12,500 km s(-1) at optical maximum), the line strength of the high velocity feature (HVF) of O I is inversely correlated with that of Si II (or Ca II), and this feature also shows a negative correlation with the luminosity of SNe Ia. This finding, together with other features we find for the O I HVF, reveal that for this subgroup of SNe Ia, explosive oxygen burning occurs in the outermost layer of the SN. Differences in the oxygen burning could lead to the observed diversity, which is in remarkable agreement with the popular delayed-detonation model of Chandrasekhar mass WDs. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | HIGH-VELOCITY FEATURES ; DELAYED-DETONATION MODEL ; PHOTOMETRY DATA RELEASE ; WHITE-DWARF MODELS ; LIGHT CURVES ; SN 2011FE ; CIRCUMSTELLAR MATERIAL ; SPECTROSCOPIC DIVERSITY ; OPTICAL OBSERVATIONS ; EARLY ULTRAVIOLET |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.3847/0004-637X/826/2/211/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000381977900111 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9719]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） 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.Physics Department and Tsinghua Center for Astrophysics, Tsinghua University, Beijing, 100084, China 2.Department of Astronomy, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan 3.School of Science, Tianjin University of Technology, Tianjin, 300384, China 4.Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan 5.Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA 6.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, China 7.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China 8.National Astronomical Observatory of China, Chinese Academy of Sciences, Beijing, 100012, China |
| 推荐引用方式 GB/T 7714 | Zhao, Xulin,Maeda, Keiichi,Wang, Xiaofeng,et al. THE OXYGEN FEATURES IN TYPE Ia SUPERNOVAE AND IMPLICATIONS FOR THE NATURE OF THERMONUCLEAR EXPLOSIONS[J]. ASTROPHYSICAL JOURNAL,2016,826(2). |
| APA | Zhao, Xulin.,Maeda, Keiichi.,Wang, Xiaofeng.,Wang, Lifan.,Sai, Hanna.,...&Rui, Liming.(2016).THE OXYGEN FEATURES IN TYPE Ia SUPERNOVAE AND IMPLICATIONS FOR THE NATURE OF THERMONUCLEAR EXPLOSIONS.ASTROPHYSICAL JOURNAL,826(2). |
| MLA | Zhao, Xulin,et al."THE OXYGEN FEATURES IN TYPE Ia SUPERNOVAE AND IMPLICATIONS FOR THE NATURE OF THERMONUCLEAR EXPLOSIONS".ASTROPHYSICAL JOURNAL 826.2(2016). |
入库方式： OAI收割
来源：云南天文台
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