THE VERY YOUNG TYPE Ia SUPERNOVA 2013dy: DISCOVERY, AND STRONG CARBON ABSORPTION IN EARLY-TIME SPECTRA
文献类型：期刊论文
| 作者 | Zheng, WK1; Silverman, JM2,17; Filippenko, AV1; Kasen, D3,4; Nugent, PE1,3; Graham, M1,5,6; Wang, XF7; Valenti, S5,6; Ciabattari, F8; Kelly, PL1 |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2013-11-20 |
| 卷号 | 778期号:1 |
| 关键词 | supernovae: general supernovae: individual (SN 2013dy) |
| ISSN号 | 2041-8205 |
| 产权排序 | 第十五完成单位 |
| 通讯作者 | Zheng, WK (reprint author), Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA. |
| 英文摘要 | The Type Ia supernova (SN Ia) 2013dy in NGC 7250 (d approximate to 13.7 Mpc) was discovered by the Lick Observatory Supernova Search. Combined with a prediscovery detection by the Italian Supernova Search Project, we are able to constrain the first-light time of SN 2013dy to be only 0.10 +/- 0.05 days (2.4 +/- 1.2 hr) before the first detection. This makes SN 2013dy the earliest known detection of an SN Ia. We infer an upper limit on the radius of the progenitor star of R-0 less than or similar to 0.25 R-circle dot, consistent with that of a white dwarf. The light curve exhibits a broken power law with exponents of 0.88 and then 1.80. A spectrum taken 1.63 days after first light reveals a C II absorption line comparable in strength to Si II. This is the strongest C II feature ever detected in a normal SN Ia, suggesting that the progenitor star had significant unburned material. The C II line in SN 2013dy weakens rapidly and is undetected in a spectrum 7 days later, indicating that C II is detectable for only a very short time in some SNe Ia. SN 2013dy reached a B-band maximum of M-B = -18.72 +/- 0.03 mag similar to 17.7 days after first light. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | WHITE-DWARF STAR ; SPECTROSCOPIC OBSERVATIONS ; LIGHT CURVES ; SN 2011FE ; TELESCOPE ; PROGRAM ; 2009DC ; SPECTROGRAPH ; ULTRAVIOLET ; PROGENITOR |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/2041-8205/778/1/L15/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000327116700015 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5426]  |
| 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.Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA 2.Department of Astronomy, University of Texas, Austin, TX 78712, USA 3.Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA 4.Department of Physics, University of California, Berkeley, CA 94720, USA 5.Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102, Santa Barbara, CA 93117, USA 6.Department of Physics, Broida Hall, University of California, Santa Barbara, CA 93106, USA 7.Department of Physics, Tsinghua University, Beijing 100084, China 8.Monte Agliale Observatory, Borgo a Mozzano, Lucca, I-55023 Italy 9.Astrophysics Science Division, NASA Goddard Space Flight Center, Mail Code 661, Greenbelt, MD 20771, USA 10.Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council of Canada, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada |
| 推荐引用方式 GB/T 7714 | Zheng, WK,Silverman, JM,Filippenko, AV,et al. THE VERY YOUNG TYPE Ia SUPERNOVA 2013dy: DISCOVERY, AND STRONG CARBON ABSORPTION IN EARLY-TIME SPECTRA[J]. ASTROPHYSICAL JOURNAL LETTERS,2013,778(1). |
| APA | Zheng, WK.,Silverman, JM.,Filippenko, AV.,Kasen, D.,Nugent, PE.,...&Zhang JJ.(2013).THE VERY YOUNG TYPE Ia SUPERNOVA 2013dy: DISCOVERY, AND STRONG CARBON ABSORPTION IN EARLY-TIME SPECTRA.ASTROPHYSICAL JOURNAL LETTERS,778(1). |
| MLA | Zheng, WK,et al."THE VERY YOUNG TYPE Ia SUPERNOVA 2013dy: DISCOVERY, AND STRONG CARBON ABSORPTION IN EARLY-TIME SPECTRA".ASTROPHYSICAL JOURNAL LETTERS 778.1(2013). |
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来源：云南天文台
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