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Evidence for a Chandrasekhar-mass explosion in the Ca-strong 1991bg-like type la supernova 2016hnk
Galbany, L.1,2; Ashall, C.3; Hoflich, P.3; Gonzalez-Gaitan, S.4; Taubenberger, S.5,6; Stritzinger, M.7; Hsiao, E. Y.3; Mazzali, P.6,8; Baron, E.9; Blondin, S.10,11; Bose, S.12; Bulla, M.13; Burke, J. F.14,15; Burns, C. R.16; Cartier, R.17; Chen, P.12,18; Della Valle, M.5,19; Diamond, T. R.20; Gutierrez, C. P.21; Harmanen, J.22; Hiramatsu, D.14,15; Holoien, T. W-S16; Hosseinzadeh, G.23; Howell, D. Andrew14,15; Huang, Y.24; Inserra, C.25; de Jaeger, T.26; Jha, S. W.27; Kangas, T.28; Kromer, M.29,30; Lyman, J. D.31; Maguire, K.32,33; Marion, G. Howie34; Milisavljevic, D.35; Prentice, S. J.32; Razza, A.36,37; Reynolds, T. M.21; Sand, D. J.38; Shappee, B. J.39; Shekhar, R.13,40; Smartt, S. J.32; Stassun, K. G.41; Sullivan, M.21; Valenti, S.42; Villanueva, S.43; Wang, X.44; Wheeler, J. Craig45; Zhai Q(翟倩)46,47; Zhang JJ(张居甲)46,47
Source PublicationASTRONOMY & ASTROPHYSICS
2019-09-23
Volume630Pages:32
DOI10.1051/0004-6361/201935537
Contribution Rank第46完成单位
Indexed BySCI
Keywordsupernovae: general supernovae: individual: SN 2016hnk
Abstract

Aims. We present a comprehensive dataset of optical and near-infrared photometry and spectroscopy of type Ia supernova (SN) 2016hnk, combined with integral field spectroscopy (IFS) of its host galaxy, MCG -01-06-070, and nearby environment. Our goal with this complete dataset is to understand the nature of this peculiar object. Methods. Properties of the SN local environment are characterized by means of single stellar population synthesis applied to IFS observations taken two years after the SN exploded. We performed detailed analyses of SN photometric data by studying its peculiar light and color curves. SN 2016hnk spectra were compared to other 1991bg-like SNe Ia, 2002es-like SNe Ia, and Ca-rich transients. In addition, we used abundance stratification modeling to identify the various spectral features in the early phase spectral sequence and also compared the dataset to a modified non-LTE model previously produced for the sublumnious SN 1999by. Results. SN 2016hnk is consistent with being a subluminous (M-B = -16.7 mag, S-BV =0.43 +/- 0.03), highly reddened object. The IFS of its host galaxy reveals both a significant amount of dust at the SN location, residual star formation, and a high proportion of old stellar populations in the local environment compared to other locations in the galaxy, which favors an old progenitor for SN 2016hnk. Inspection of a nebular spectrum obtained one year after maximum contains two narrow emission lines attributed to the forbidden [Ca II] lambda lambda 7291,7324 doublet with a Doppler shift of 700 km s(-1). Based on various observational diagnostics, we argue that the progenitor of SN 2016hnk was likely a near Chandrasekhar-mass (M-Ch) carbon-oxygen white dwarf that produced 0.108 M-circle dot of Ni-56. Our modeling suggests that the narrow [Ca II] features observed in the nebular spectrum are associated with Ca-48 from electron capture during the explosion, which is expected to occur only in white dwarfs that explode near or at the M-Ch limit.

Funding ProjectNational Science Foundation[AST-1613472] ; National Science Foundation (NSF)[1715133] ; FCT[CRISP PTDC/FIS-AST-31546] ; VILLUM FONDEN[13261] ; Independent Research Fund Denmark ; National Aeronautics & Space Administration (NASA)[NNX16AB25G] ; National Aeronautics & Space Administration (NASA)[NN12AR55G] ; National Aeronautics & Space Administration (NASA)[80NSSC18K0284] ; National Aeronautics & Space Administration (NASA)[80NSSC18K1575] ; Aarhus University Research Fund (AUFF) ; China postdoctoral science foundation[2018T110006] ; Swedish Research Council (Vetenskapsradet) ; Swedish National Space Board ; research environment grant "Gravitational Radiation and Electromagnetic Astrophysical Transients (GREAT)" ; EU/FP7-ERC[615929] ; Finnish Cultural Foundation ; NSF[AST-1313484] ; NSF[AST-1615455] ; NSF[AST-1821987] ; NSF[1821967] ; NSF[AST-1515927] ; NSF[AST-0908816] ; US NSF[AST-1211916] ; TABASGO Foundation ; STFC[ST/M005348/1] ; H2020 through an ERC Starting Grant[758638] ; National Natural Science Foundation of China (NSFC)[11325313] ; National Natural Science Foundation of China (NSFC)[11633002] ; National Natural Science Foundation of China (NSFC)[11773067] ; National Natural Science Foundation of China (NSFC)[11403096] ; Youth Innovation Promotion Association of the CAS[2018081] ; Western Light Youth Project of CAS ; LCO network[CLN2016A-005] ; LCO network[NAOC2017AB-001] ; LCO network[CON2016A-008] ; LCO network[ARI2017AB-001] ; Gordon and Betty Moore Foundation[GBMF5490] ; Mt. Cuba Astronomical Foundation ; Center for Cosmology and AstroParticle Physics at the Ohio State University ; Chinese Academy of Sciences South America Center for Astronomy (CASSACA) ; Villum Foundation ; Las Cumbres Observatory (LCO) ; Instrument Center for Danish Astrophysics (IDA) ; "the Strategic Priority Research Program-The Emergence of Cosmological Structures" of the Chinese Academy of Sciences[11 XDB09000000] ; Special Fund for Astronomy from the Ministry of Finance ; National Astronomical Observatories of China ; Chinese Academy of Sciences (CAS) ; People's Government of Yunnan Province ; Gemini Observatory[GS-2016B-Q-22]
Funding OrganizationNational Science Foundation[AST-1613472] ; National Science Foundation (NSF)[1715133] ; FCT[CRISP PTDC/FIS-AST-31546] ; VILLUM FONDEN[13261] ; Independent Research Fund Denmark ; National Aeronautics & Space Administration (NASA)[NNX16AB25G, NN12AR55G, 80NSSC18K0284, 80NSSC18K1575] ; Aarhus University Research Fund (AUFF) ; China postdoctoral science foundation[2018T110006] ; Swedish Research Council (Vetenskapsradet) ; Swedish National Space Board ; research environment grant "Gravitational Radiation and Electromagnetic Astrophysical Transients (GREAT)" ; EU/FP7-ERC[615929] ; Finnish Cultural Foundation ; NSF[AST-1313484, AST-1615455, AST-1821987, 1821967, AST-1515927, AST-0908816] ; US NSF[AST-1211916] ; TABASGO Foundation ; STFC[ST/M005348/1] ; H2020 through an ERC Starting Grant[758638] ; National Natural Science Foundation of China (NSFC)[11325313, 11633002, 11773067, 11403096] ; Youth Innovation Promotion Association of the CAS[2018081] ; Western Light Youth Project of CAS ; LCO network[CLN2016A-005, NAOC2017AB-001, CON2016A-008, ARI2017AB-001] ; Gordon and Betty Moore Foundation[GBMF5490] ; Mt. Cuba Astronomical Foundation ; Center for Cosmology and AstroParticle Physics at the Ohio State University ; Chinese Academy of Sciences South America Center for Astronomy (CASSACA) ; Villum Foundation ; Las Cumbres Observatory (LCO) ; Instrument Center for Danish Astrophysics (IDA) ; "the Strategic Priority Research Program-The Emergence of Cosmological Structures" of the Chinese Academy of Sciences[11 XDB09000000] ; Special Fund for Astronomy from the Ministry of Finance ; National Astronomical Observatories of China ; Chinese Academy of Sciences (CAS) ; People's Government of Yunnan Province ; Gemini Observatory[GS-2016B-Q-22]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherEDP SCIENCES S A
Publication Place17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
ISSN1432-0746
URL查看原文
WOS IDWOS:000487185300001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordPOTSDAM MULTIAPERTURE SPECTROPHOTOMETER ; ACCRETING WHITE-DWARFS ; NEAR-INFRARED SPECTRA ; DIGITAL SKY SURVEY ; IA SUPERNOVA ; LIGHT CURVES ; ABUNDANCE STRATIFICATION ; SUB-CHANDRASEKHAR ; PROGENITOR SYSTEM ; URCA PROCESS
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/21246
Collection丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
Corresponding AuthorGalbany, L.
Affiliation1.PITT PACC, Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA
2.Departamento de Física Teórica y del Cosmos, Universidad de Granada, 18071 Granada, Spain
3.Department of Physics, Florida State University, Tallahassee, FL 32306, USA
4.CENTRA/COSTAR, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
5.European Southern Observatory, Karl-Schwarzschild-Straeß2, 85748 Garching bei München, Germany
6.Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Straße 1, 85748 Garching bei München, Germany
7.Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
8.Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UK
9.Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, OK, USA
10.Aix Marseille Univ., CNRS, CNES, Laboratoire d’Astrophysique de Marseille (LAM), Marseille, France
11.Unidad Mixta Internacional Franco-Chilena de Astronomía, CNRS/INSU UMI 3386, and Departamento de Astronomía, Universidad de Chile, Camino El Observatorio 1515, Las Condes, Santiago, Chile
12.Kavli Institute for Astronomy and Astrophysics, Peking University, Yi He Yuan Road 5, Hai Dian District, Beijing 100871, PR China
13.The Oskar Klein Centre, Department of Physics, Stockholm University, AlbaNova 106 91, Stockholm, Sweden
14.Las Cumbres Observatory, 6740 Cortona Dr. Suite 102, Goleta, CA 93117, USA
15.University of California, Santa Barbara, Department of Physics, Broida Hall, Santa Barbara, CA 93111, USA
16.The Observatories of the Carnegie Institution for Science, 813 Santa Barbara St., Pasadena, CA 91101, USA
17.Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, Chile
18.Department of Astronomy, School of Physics, Peking University, Yi He Yuan Road 5, Hai Dian District, Beijing 100871, PR China
19.Capodimonte Observatory, INAF-Naples, Salita Moiariello 16, 80131 Naples, Italy
20.Astrophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
21.School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK
22.Tuorla Observatory, Department of Physics and Astronomy, University of Turku, Turku 20014, Finland
23.Harvard-Smithsonian Center for Astrohysics, 60 Garden Street, Cambridge, MA 02138, USA
24.University of California, La Jolla, San Diego, CA 92093, USA
25.School of Physics & Astronomy, Cardiff University, Queens Buildings, The Parade, Cardiff CF24 3AA, UK
26.Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA
27.Department of Physics and Astronomy, Rutgers the State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854, USA
28.Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
29.Zentrum für Astronomie der Universität Heidelberg, Institut für Theoretische Astrophysik, Philosophenweg 12, 69120 Heidelberg, Germany
30.Heidelberger Institut für Theoretische Studien, Schloss-Wolfsbrunnenweg 35, 69118 Heidelberg, Germany
31.Department of Physics, University of Warwick, Coventry CV4 7AL, UK
32.Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, UK
33.University of Texas at Austin, 1 University Station C1400, Austin, TX 78712-0259, USA
34.Trinity Coll Dublin, Sch Phys, Dublin 2, Ireland
35.Department of Physics and Astronomy, Purdue University, 525 Northwestern Avenue, West Lafayette, IN 47907, USA
36.European Southern Observatory, Alonso de Córdova 3107, Casilla 19, Santiago, Chile
37.Departamento de Astronomía, Universidad de Chile, Camino El Observatorio 1515, Las Condes, Santiago, Chile
38.Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA
39.Institute for Astronomy, University of Hawai’i, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
40.Department of Physics, BITS Pilani K.K. Birla Goa Campus, India
41.Vanderbilt University, Department of Physics & Astronomy, Nashville, TN 37235, USA
42.Department of Physics, University of California, Davis, CA 95616, USA
43.Massachusetts Institute of Technology, Cambridge, MA 02139, USA
44.Physics Department/Tsinghua Center for Astrophysics, Tsinghua University, Beijing 100084, PR China
45.Department of Astronomy, University of Texas at Austin, Austin, TX 78712, USA
46.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, PR China
47.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, PR China
Recommended Citation
GB/T 7714
Galbany, L.,Ashall, C.,Hoflich, P.,et al. Evidence for a Chandrasekhar-mass explosion in the Ca-strong 1991bg-like type la supernova 2016hnk[J]. ASTRONOMY & ASTROPHYSICS,2019,630:32.
APA Galbany, L..,Ashall, C..,Hoflich, P..,Gonzalez-Gaitan, S..,Taubenberger, S..,...&Zhang JJ.(2019).Evidence for a Chandrasekhar-mass explosion in the Ca-strong 1991bg-like type la supernova 2016hnk.ASTRONOMY & ASTROPHYSICS,630,32.
MLA Galbany, L.,et al."Evidence for a Chandrasekhar-mass explosion in the Ca-strong 1991bg-like type la supernova 2016hnk".ASTRONOMY & ASTROPHYSICS 630(2019):32.
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