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A massive star origin for an unusual helium-rich supernova in an elliptical galaxy
Kawabata, K. S.1; Maeda, K.2; Nomoto, K.2; Taubenberger, S.3; Tanaka, M.2,4; Deng, J.5; Pian, E.6; Hattori, T.7; Itagaki, K.8
2010-05-20
Source PublicationNATURE
Volume465Issue:7296Pages:326-328
AbstractThe unusual helium-rich (type Ib) supernova SN 2005E is distinguished from all supernovae hitherto observed by its faint and rapidly fading light curve, prominent calcium lines in late-phase spectra and lack of any mark of recent star formation near the supernova location. These properties are claimed(1) to be explained by a helium detonation in a thin surface layer of an accreting white dwarf. Here we report that the observed properties of SN 2005cz, which appeared in an elliptical galaxy, resemble those of SN 2005E. We argue that these properties are best explained by a core-collapse supernova at the low-mass end (8-12 solar masses) of the range of massive stars that explode(2). Such a low-mass progenitor lost its hydrogen-rich envelope through binary interaction, had very thin oxygen-rich and silicon-rich layers above the collapsing core, and accordingly ejected a very small amount of radioactive (56)Ni and oxygen. Although the host galaxy NGC 4589 is an elliptical, some studies have revealed evidence of recent star-formation activity(3), consistent with the core-collapse model.
DOI10.1038/nature09055
Indexed BySCI
Language英语
WOS IDWOS:000277829200035
Citation statistics
Cited Times:53[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7776
Collection空间科学研究部
Affiliation1.Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Hiroshima 7398526, Japan
2.Univ Tokyo, IPMU, Chiba 2778583, Japan
3.Max Planck Inst Astrophys, D-85741 Garching, Germany
4.Univ Tokyo, Sch Sci, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan
5.CAS, Natl Astron Observ, Beijing 100012, Peoples R China
6.INAF Osservatorio Astron Trieste, I-3413 Trieste, Italy
7.Natl Inst Nat Sci, Natl Astron Observ Japan, Subaru Telescope, Hilo, HI 96720 USA
8.Itagaki Astron Observ, Teppo, Yamagata 9902492, Japan
Recommended Citation
GB/T 7714
Kawabata, K. S.,Maeda, K.,Nomoto, K.,et al. A massive star origin for an unusual helium-rich supernova in an elliptical galaxy[J]. NATURE,2010,465(7296):326-328.
APA Kawabata, K. S..,Maeda, K..,Nomoto, K..,Taubenberger, S..,Tanaka, M..,...&Itagaki, K..(2010).A massive star origin for an unusual helium-rich supernova in an elliptical galaxy.NATURE,465(7296),326-328.
MLA Kawabata, K. S.,et al."A massive star origin for an unusual helium-rich supernova in an elliptical galaxy".NATURE 465.7296(2010):326-328.
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