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dc.contributor.author | Yoshida, T. | en |
dc.contributor.author | Okita, S. | en |
dc.contributor.author | Umeda, H. | en |
dc.contributor.alternative | 吉田, 敬 | ja |
dc.date.accessioned | 2014-04-04T01:56:49Z | - |
dc.date.available | 2014-04-04T01:56:49Z | - |
dc.date.issued | 2014-02-18 | - |
dc.identifier.issn | 0035-8711 | - |
dc.identifier.uri | http://hdl.handle.net/2433/185160 | - |
dc.description.abstract | We investigate the possibility of a superluminous Type Ic core-collapse supernovae (SNe) producing a large amount of 56Ni. Very massive stars with a main-sequence mass larger than 100 M⊙ and a metallicity 0.001 < Z ≲ 0.004 are expected to explode as superluminous Type Ic SNe. Stars with ∼110–150 M⊙ and Z ≲ 0.001 would explode as Type Ic pulsational pair-instability SNe if the whole H and He layer has been lost by the mass-loss during pulsational pair instability. We evaluate the total ejecta mass and the yields of 56Ni, O and Si in core-collapse SNe evolved from very massive stars. We adopt 43.1 and 61.1 M⊙ WO stars withZ = 0.004 as SN progenitors expected to explode as Type Ic core-collapse SNe. These progenitors have masses of 110 and 250 M⊙ at the zero-age main sequence. Spherical explosions with an explosion energy larger than 2 × 1052 erg produce more than 3.5 M⊙56Ni, enough to reproduce the light curve of SN 2007bi. Asphericity of the explosion affects the total ejecta mass as well as the yields of 56Ni, O and Si. Aspherical explosions of the 110 and 250 M⊙ models reproduce the 56Ni yield of SN 2007bi. These explosions will also show large velocity dispersion. An aspherical core-collapse SN evolved from a very massive star is a possibility of the explosion of SN 2007bi. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Oxford University Press | en |
dc.rights | This article has been accepted for publication in 'Monthly Notices of the Royal Astronomical Society' ©: 2014 Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. | en |
dc.subject | nuclear reactions, nucleosynthesis, abundances | en |
dc.subject | stars: evolution | en |
dc.subject | supernovae: general | en |
dc.subject | supernovae: individual: SN 2007bi | en |
dc.subject | stars: Wolf–Rayet | en |
dc.title | Type Ic core-collapse supernova explosions evolved from very massive stars | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.ncid | AA10528285 | - |
dc.identifier.jtitle | Monthly Notices of the Royal Astronomical Society | en |
dc.identifier.volume | 438 | - |
dc.identifier.issue | 4 | - |
dc.identifier.spage | 3119 | - |
dc.identifier.epage | 3127 | - |
dc.relation.doi | 10.1093/mnras/stt2427 | - |
dc.textversion | publisher | - |
dcterms.accessRights | open access | - |
出現コレクション: | 学術雑誌掲載論文等 |
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