THE PECULIAR TYPE Ib SUPERNOVA 2006jc: A WCO WOLF-RAYET STAR EXPLOSION
文献类型：期刊论文
| 作者 | Tominaga, N.1,2; Limongi, M.2,3,4; Suzuki, T.2; Tanaka, M.2; Nomoto, K.2,5; Maeda, K.5,6; Chieffi, A.7; Tornambe, A.3; Minezaki, T.8; Yoshii, Y.8 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2008-11-10 |
| 卷号 | 687期号:2页码:1208-1219 |
| 关键词 | dust, extinction infrared: ISM nuclear reactions, nucleosynthesis, abundances supernovae: general supernovae: individual (SN 2006jc) stars: Wolf-Rayet |
| 英文摘要 | We present a theoretical model for Type Ib supernova (SN) 2006jc. We calculate the evolution of the progenitor star, hydrodynamics and nucleosynthesis of the SN explosion, and the SN bolometric light curve (LC). The synthetic bolometric LC is compared with the observed bolometric LC constructed by integrating the UV, optical, near-infrared (NIR), and mid-infrared (MIR) fluxes. The progenitor is assumed to be as massive as 40 M-circle dot on the zero-age main sequence. The star undergoes extensive mass loss to reduce its mass down to as small as 6.9 M-circle dot, thus becoming a WCO Wolf-Rayet star. The WCO star model has a thick carbon-rich layer, in which amorphous carbon grains can be formed. This could explain the NIR brightening and the dust feature seen in the MIR spectrum. We suggest that the progenitor of SN 2006jc is a WCO Wolf-Rayet star having undergone strong mass loss, and such massive stars are important sites of dust formation. We derive the parameters of the explosion model in order to reproduce the bolometric LC of SN 2006jc by the radioactive decays: the ejecta mass 4.9 M-circle dot, hypernova-like explosion energy 1052 ergs, and ejected Ni-56 mass 0.22 M-circle dot. We also calculate the circumstellar interaction and find that a CSM with a flat density structure is required to reproduce the X-ray LC of SN 2006jc. This suggests a drastic change of the mass-loss rate and/or the wind velocity that is consistent with the past luminous blue variable (LBV)-like event. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000260566700034 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7404]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.Natl Astron Observ, Div Opt & Infrared Astron, Tokyo 181, Japan 2.Univ Tokyo, Dept Astron, Sch Sci, Bunkyo Ku, Tokyo 113, Japan 3.Osserv Astron Roma, Ist Nazl Astrofis, I-00040 Monte Porzio Catone, Italy 4.Monash Univ, Sch Math Sci, Ctr Stellar & Planetary Astrophys, Clayton, Vic 3800, Australia 5.Univ Tokyo, Inst Phys & Math Universe, Chiba, Japan 6.Max Planck Inst Astrophys, D-85741 Garching, Germany 7.Ist Astrofis Spaziale & Fis Cosm, Ist Nazl Astrofis, Rome, Italy 8.Univ Tokyo, Inst Astron, Sch Sci, Tokyo 113, Japan 9.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Kanagawa, Japan 10.Hokkaido Univ, Grad Sch Sci, Dept Cosmosci, Sapporo, Hokkaido, Japan |
| 推荐引用方式 GB/T 7714 | Tominaga, N.,Limongi, M.,Suzuki, T.,et al. THE PECULIAR TYPE Ib SUPERNOVA 2006jc: A WCO WOLF-RAYET STAR EXPLOSION[J]. ASTROPHYSICAL JOURNAL,2008,687(2):1208-1219. |
| APA | Tominaga, N..,Limongi, M..,Suzuki, T..,Tanaka, M..,Nomoto, K..,...&Deng, J..(2008).THE PECULIAR TYPE Ib SUPERNOVA 2006jc: A WCO WOLF-RAYET STAR EXPLOSION.ASTROPHYSICAL JOURNAL,687(2),1208-1219. |
| MLA | Tominaga, N.,et al."THE PECULIAR TYPE Ib SUPERNOVA 2006jc: A WCO WOLF-RAYET STAR EXPLOSION".ASTROPHYSICAL JOURNAL 687.2(2008):1208-1219. |
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来源：国家天文台
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