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THE VERY YOUNG TYPE Ia SUPERNOVA 2013dy: DISCOVERY, AND STRONG CARBON ABSORPTION IN EARLY-TIME SPECTRA
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; Fox, OD1; Shivvers, I1; Clubb, KI1; Cenko, SB9; Balam, D10; Howell, DA5,6; Hsiao, E11; Li, WD1; Marion, GH2,12; Sand, D13; Vinko, J2,14; Wheeler, JC2; Zhang JJ(张居甲)15,16
发表期刊ASTROPHYSICAL JOURNAL LETTERS
2013-11-20
卷号778期号:1
DOI10.1088/2041-8205/778/1/L15
产权排序第15完成单位
收录类别SCI
关键词Supernovae: General Supernovae: Individual (Sn 2013dy)
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.

资助项目TABASGO Foundation ; Sylvia and Jim Katzman Foundation ; Christopher R. Redlich Fund ; NSF[AST-1211916] ; NSF[AST-1302771] ; NSF[AST-1109801] ; NNSFC[11073013] ; NNSFC[11178003] ; Foundation of Tsinghua University[2011Z02170] ; Major State Basic Research Development Program[2013CB834903] ; Hungarian OTKA[NN 107637] ; DoE[DE-AC02-05CH11231] ; W. M. Keck Foundation
项目资助者TABASGO Foundation ; Sylvia and Jim Katzman Foundation ; Christopher R. Redlich Fund ; NSF[AST-1211916, AST-1302771, AST-1109801] ; NNSFC[11073013, 11178003] ; Foundation of Tsinghua University[2011Z02170] ; Major State Basic Research Development Program[2013CB834903] ; Hungarian OTKA[NN 107637] ; DoE[DE-AC02-05CH11231] ; W. M. Keck Foundation
语种英语
学科领域天文学 ; 恒星与银河系
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN2041-8205
URL查看原文
WOS记录号WOS:000327116700015
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]WHITE-DWARF STAR ; SPECTROSCOPIC OBSERVATIONS ; LIGHT CURVES ; SN 2011FE ; TELESCOPE ; PROGRAM ; 2009DC ; SPECTROGRAPH ; ULTRAVIOLET ; PROGENITOR
引用统计
被引频次:77[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/114a53/5426
专题南方基地
中国科学院天体结构与演化重点实验室
通讯作者Zheng, WK
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
11.Carnegie Observatories, Las Campanas Observatory, Colina El Pino, Casilla 601, Chile
12.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
13.Physics Department, Texas Tech University, Lubbock, TX 79409, USA
14.Department of Optics and Quantum Electronics, University of Szeged, Dóm tér 9, 6720 Szeged, Hungary
15.Yunan Astronomical Observatory, Chinese Academy of Sciences, 650011, Yunnan, China
16.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
17.NSF Astronomy and Astrophysics Postdoctoral Fellow.
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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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