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Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star
Arcavi, Iair1,2,3; Howell, D. Andrew1,3; Kasen, Daniel4,5,6; Bildsten, Lars2,3; Hosseinzadeh, Griffin1,3; McCully, Curtis1,3; Wong, Zheng Chuen1,3; Katz, Sarah Rebekah1,3; Gal-Yam, Avishay7; Sollerman, Jesper8; Taddia, Francesco8; Leloudas, Giorgos7,9; Fremling, Christoffer8; Nugent, Peter E.6,10; Horesh, Assaf7,11; Mooley, Kunal12; Rumsey, Clare13; Cenko, S. B. Radley14,15; Graham, Melissa L.6,16; Perley, Daniel A.9,17; Nakar, Ehud18; Shaviv, Nir J.11; Bromberg, Omer18; Shen, Ken J.8; Ofek, Eran O.7; Cao, Yi16,19; Wang, Xiaofeng20,21; Huang, Fang20,21; Rui, Liming20,21; Zhang, Tianmeng22,23; Li, Wenxiong20,21; Li, Zhitong20,21; Zhang, Jujia24,25; Valenti, Stefano26; Guevel, David1,3; Shappee, Benjamin27; Kochanek, Christopher S.28,29; Holoien, Thomas W. -S.28,29; Filippenko, Alexei V.6,30; Fender, Rob12; Nyholm, Anders8; Yaron, Ofer7; Kasliwal, Mansi M. .31; Sullivan, Mark32; Lagorodnova, Nadja B.31; Walters, Richard S.31; Lunnan, Ragnhild31; Khazov, Danny7; Andreoni, Igor33,34,35; Laher, Russ R.36; Konidaris, Nick27; Wozniak, Przemek37; Bue, Brian38
摘要Every supernova so far observed has been considered to be the terminal explosion of a star. Moreover, all supernovae with absorption lines in their spectra show those lines decreasing in velocity over time, as the ejecta expand and thin, revealing slower-moving material that was previously hidden. In addition, every supernova that exhibits the absorption lines of hydrogen has one main light-curve peak, or a plateau in luminosity, lasting approximately 100 days before declining(1). Here we report observations of iPTF14hls, an event that has spectra identical to a hydrogen-rich core-collapse supernova, but characteristics that differ extensively from those of known supernovae. The light curve has at least five peaks and remains bright for more than 600 days; the absorption lines show little to no decrease in velocity; and the radius of the line-forming region is more than an order of magnitude bigger than the radius of the photosphere derived from the continuum emission. These characteristics are consistent with a shell of several tens of solar masses ejected by the progenitor star at supernova-level energies a few hundred days before a terminal explosion. Another possible eruption was recorded at the same position in 1954. Multiple energetic pre-supernova eruptions are expected to occur in stars of 95 to 130 solar masses, which experience the pulsational pair instability(2-5). That model, however, does not account for the continued presence of hydrogen, or the energetics observed here. Another mechanism for the violent ejection of mass in massive stars may be required.
WOS标题词Science & Technology
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
作者单位1.Las Cumbres Observ, Goleta, CA 93117 USA
2.Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA
3.Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
4.Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA
5.Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
6.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
7.Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel
8.Stockholm Univ, Dept Astron, Oskar Klein Ctr, SE-10691 Stockholm, Sweden
9.Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark
10.Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA
11.Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel
12.Univ Oxford, Dept Phys Astrophys, Denys Wilkinson Bldg, Oxford OX1 3RH, England
13.Cavendish Lab, Astrophys Grp, 19 JJ Thomson Ave, Cambridge CB3 0HE, England
14.NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Code 661, Greenbelt, MD 20771 USA
15.Univ Maryland, Joint Space Sci Inst, College Pk, MD 20742 USA
16.Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA
17.Liverpool John Moores Univ, Astrophys Res Inst, IC2,Liverpool Sci Pk,146 Brownlow Hill, Liverpool L3 5RF, Merseyside, England
18.Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel
19.Univ Washington, eScience Inst, Box 351570, Seattle, WA 98195 USA
20.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China
21.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China
22.Chinese Acad Sci, Natl Astron Observ China, Key Lab Opt Astron, Beijing 100012, Peoples R China
23.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 101408, Peoples R China
24.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China
25.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Yunnan, Peoples R China
26.Univ Calif Davis, Dept Phys, 1 Shields Ave, Davis, CA 95616 USA
27.Carnegie Observ, 813 Santa Barbara St, Pasadena, CA 91101 USA
28.Ohio State Univ, Dept Astron, 140 West 18th Ave, Columbus, OH 43210 USA
29.Ohio State Univ, Ctr Cosmol & AstroParticle Phys CCAPP, 191 W Woodruff Ave, Columbus, OH 43210 USA
30.Univ Calif Berkeley, Miller Inst Basic Res Sci, Berkeley, CA 94720 USA
31.CALTECH, Cahill Ctr Astrophys, Pasadena, CA 91125 USA
32.Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England
33.Swinburne Univ Technol, Ctr Astrophys & Supercomp, POB 218, Melbourne, Vic 3122, Australia
34.ARC Ctr Excellence All Sky Astrophys CAASTRO, Sydney, NSW, Australia
35.Australian Astron Observ, POB 915, N Ryde, NSW 1670, Australia
36.CALTECH, Spitzer Sci Ctr, MS 314-6, Pasadena, CA 91125 USA
37.Los Alamos Natl Lab, Space & Atmospher Sci Grp, Mail Stop D466, Los Alamos, NM 87545 USA
38.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
GB/T 7714
Arcavi, Iair,Howell, D. Andrew,Kasen, Daniel,et al. Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star[J]. NATURE,2017,551(7679):210-+.
APA Arcavi, Iair.,Howell, D. Andrew.,Kasen, Daniel.,Bildsten, Lars.,Hosseinzadeh, Griffin.,...&Bue, Brian.(2017).Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star.NATURE,551(7679),210-+.
MLA Arcavi, Iair,et al."Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star".NATURE 551.7679(2017):210-+.
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