SUPERNOVA 2003bg: THE FIRST TYPE IIb HYPERNOVA

	SUPERNOVA 2003bg: THE FIRST TYPE IIb HYPERNOVA
	Hamuy, Mario 1; Deng, Jinsong2 ; Mazzali, Paolo A.3,4; Morrell, Nidia I.; Phillips, Mark M.; Roth, Miguel ; Gonzalez, Sergio ; Thomas-Osip, Joanna ; Krzeminski, Wojtek ; Contreras, Carlos
刊名	ASTROPHYSICAL JOURNAL
	2009-10-01
卷号	703 期号:2 页码:1612-1623
关键词	supernovae: general
英文摘要	Optical and near-infrared photometry and optical spectroscopy are reported for SN 2003bg, starting a few days after explosion and extending for a period of more than 300 days. Our early-time spectra reveal the presence of broad, high-velocity Balmer lines. The nebular-phase spectra, on the other hand, show a remarkable resemblance to those of Type Ib/c supernovae, without clear evidence for hydrogen. Near maximum brightness SN 2003bg displayed a bolometric luminosity comparable to that of other Type I hypernovae unrelated to gamma-ray bursts, implying a rather normal amount of (56)Ni production (0.1-0.2M(circle dot)) compared with other such objects. The bolometric light curve of SN 2003bg, on the other hand, is remarkably broad, thus suggesting a relatively large progenitor mass at the moment of explosion. These observations, together with the large value of the kinetic energy of expansion established in the accompanying paper, suggest that SN 2003bg can be regarded as a Type IIb hypernova.
收录类别	SCI
语种	英语
WOS记录号	WOS:000269929500034
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/7608]
专题	国家天文台_空间科学研究部
作者单位	1.Univ Chile, Dept Astron, Santiago, Chile 2.CAS, Natl Astron Observ, Beijing 1000012, Peoples R China 3.Natl Inst Astrophys OAPd, I-35122 Padua, Italy 4.Max Planck Inst Astrophys, D-85748 Garching, Germany 5.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA 6.Carnegie Inst Washington, Pasadena, CA 91101 USA 7.Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA
推荐引用方式 GB/T 7714	Hamuy, Mario,Deng, Jinsong,Mazzali, Paolo A.,et al. SUPERNOVA 2003bg: THE FIRST TYPE IIb HYPERNOVA[J]. ASTROPHYSICAL JOURNAL,2009,703(2):1612-1623.
APA	Hamuy, Mario.,Deng, Jinsong.,Mazzali, Paolo A..,Morrell, Nidia I..,Phillips, Mark M..,...&Krisciunas, Kevin.(2009).SUPERNOVA 2003bg: THE FIRST TYPE IIb HYPERNOVA.ASTROPHYSICAL JOURNAL,703(2),1612-1623.
MLA	Hamuy, Mario,et al."SUPERNOVA 2003bg: THE FIRST TYPE IIb HYPERNOVA".ASTROPHYSICAL JOURNAL 703.2(2009):1612-1623.