THE VERY YOUNG TYPE Ia SUPERNOVA 2013dy: DISCOVERY, AND STRONG CARBON ABSORPTION IN EARLY-TIME SPECTRA

doi:10.1088/2041-8205/778/1/L15

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	THE VERY YOUNG TYPE Ia SUPERNOVA 2013dy: DISCOVERY, AND STRONG CARBON ABSORPTION IN EARLY-TIME SPECTRA
	Zheng, WK 1; Silverman, JM 2,17; Filippenko, AV 1; Kasen, D 3,4; Nugent, PE 1,3; Graham, M 1,5,6; Wang, XF 7; Valenti, S 5,6; Ciabattari, F 8; Kelly, PL 1; Fox, OD 1; Shivvers, I 1; Clubb, KI 1; Cenko, SB 9; Balam, D 10; Howell, DA 5,6; Hsiao, E 11; Li, WD 1; Marion, GH 2,12; Sand, D 13; Vinko, J 2,14; Wheeler, JC 2; Zhang JJ(张居甲)15,16
发表期刊	ASTROPHYSICAL JOURNAL LETTERS
	2013-11-20
卷号	778 期号:1
DOI	10.1088/2041-8205/778/1/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
文章类型	Article
出版者	IOP PUBLISHING LTD
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN	2041-8205
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：81[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.
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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