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SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young

文献类型：期刊论文

作者Han, Xuhui13; Zheng, WeiKang2; Stahl, Benjamin E.2,3; Burke, Jamison4,5; Vinko, Jozsef6,7,8; de Jager, Thomas2; Arcavil, Iair9,10; Brink, Thomas G.2; Cseh, Borbala6; Hiraatsu, Daichi4,5
刊名ASTROPHYSICAL JOURNAL
出版日期2020-04-01
卷号892期号:2页码:10
ISSN号0004-637X
DOI10.3847/1538-4357/ab7a27
英文摘要The Type.Ia supernova (SN Ia) 2017cfd in IC.0511 (redshift z = 0.01209. 0.00016) was discovered by the Lick Observatory Supernova Search 1.6.+/-.0.7 day after the fitted first-light time (15.2 days before B-band maximum brightness). Photometric and spectroscopic follow-up observations show that SN.2017cfd is a typical, normal SN.Ia with a peak luminosity MB >> -19.2. 0.2 mag,.m15(B).=.1.16 mag, and reached a B-band maximum 16.8.days after the first light. We estimate there to be moderately strong host-galaxy extinction (AV.=.0.39.+/-.0.03 mag) based on MLCS2k2 fitting. The spectrum reveals a Si.II.6355 velocity of 11,200 km s-1 at peak brightness. SN.2017cfd was discovered very young, with multiband data taken starting 2.days after the first light, making it a valuable complement to the currently small sample (fewer than a dozen) of SNe.Ia with color data at such early times. We find that its intrinsic early-time (B - V) 0 color evolution belongs to the "blue" population rather than to the distinct "red" population. Using the photometry, we constrain the companion-star radius to be..2.5 R. with the Kasen model, thus ruling out a red-giant companion.
WOS关键词OPTICAL-SPECTRA ; DATA RELEASE ; PROGRAM ; SEARCH ; REDSHIFT ; PROGENITORS ; SAMPLE ; I.
资助项目Christopher R. Redlich Fund ; TABASGO Foundation ; Miller Institute for Basic Research in Science (U.C. Berkeley) ; NSF[AST-1313484] ; European Union[GINOP 2.3.2-15-201600033]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000525491100001
出版者IOP PUBLISHING LTD
资助机构Christopher R. Redlich Fund ; Christopher R. Redlich Fund ; TABASGO Foundation ; TABASGO Foundation ; Miller Institute for Basic Research in Science (U.C. Berkeley) ; Miller Institute for Basic Research in Science (U.C. Berkeley) ; NSF ; NSF ; European Union ; European Union ; Christopher R. Redlich Fund ; Christopher R. Redlich Fund ; TABASGO Foundation ; TABASGO Foundation ; Miller Institute for Basic Research in Science (U.C. Berkeley) ; Miller Institute for Basic Research in Science (U.C. Berkeley) ; NSF ; NSF ; European Union ; European Union ; Christopher R. Redlich Fund ; Christopher R. Redlich Fund ; TABASGO Foundation ; TABASGO Foundation ; Miller Institute for Basic Research in Science (U.C. Berkeley) ; Miller Institute for Basic Research in Science (U.C. Berkeley) ; NSF ; NSF ; European Union ; European Union ; Christopher R. Redlich Fund ; Christopher R. Redlich Fund ; TABASGO Foundation ; TABASGO Foundation ; Miller Institute for Basic Research in Science (U.C. Berkeley) ; Miller Institute for Basic Research in Science (U.C. Berkeley) ; NSF ; NSF ; European Union ; European Union
源URL[http://ir.bao.ac.cn/handle/114a11/55752]  
专题中国科学院国家天文台
通讯作者Han, Xuhui
作者单位1.Univ Calif Berkeley, Miller Inst Basic Res Sci, Berkeley, CA 94720 USA
2.Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
3.Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
4.Las Cumbres Observ Global Telescope Network, 6740 Cortona Dr Ste 102, Goleta, CA 93117 USA
5.Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
6.Inst Astron & Earth Sci, Konkoly Observ, Konkoly Thege Ut 15-17, H-1121 Budapest, Hungary
7.Univ Szeged, Dept Opt & Quantum Elect, Dom Ter 9, H-6720 Szeged, Hungary
8.Univ Texas Austin, Dept Astron, 2515 Speedway, Austin, TX 78712 USA
9.Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel
10.CIFAR, Azrieli Global Scholars Program, Toronto, ON, Canada
推荐引用方式
GB/T 7714		 Han, Xuhui,Zheng, WeiKang,Stahl, Benjamin E.,et al. SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young[J]. ASTROPHYSICAL JOURNAL,2020,892(2):10.
APA Han, Xuhui.,Zheng, WeiKang.,Stahl, Benjamin E..,Burke, Jamison.,Vinko, Jozsef.,...&Filipenko, Alexei, V.(2020).SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young.ASTROPHYSICAL JOURNAL,892(2),10.
MLA Han, Xuhui,et al."SN 2017cfd: A Normal Type Ia Supernova Discovered Very Young".ASTROPHYSICAL JOURNAL 892.2(2020):10.

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来源：国家天文台

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