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Progenitor mass of the type IIP supernova 2005cs
Context. The progenitor mass of type IIP supernova can be determined from either hydrodynamic modeling of the event or pre-explosion observations. Aims. To compare these approaches, we determine parameters of the sub-luminous supernova 2005cs and estimate its progenitor mass. Methods. We compute the...
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| Published in: | Astronomy and astrophysics (Berlin) 2008-11, Vol.491 (2), p.507-513 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | Context. The progenitor mass of type IIP supernova can be determined from either hydrodynamic modeling of the event or pre-explosion observations. Aims. To compare these approaches, we determine parameters of the sub-luminous supernova 2005cs and estimate its progenitor mass. Methods. We compute the hydrodynamic models of the supernova to describe its light curves and expansion velocity data. Results. We estimate a presupernova mass of $17.3\pm1~M_{\odot}$, an explosion energy of $(4.1\pm0.3)\times10^{50}$ erg, a presupernova radius of $600\pm140~R_{\odot}$, and a radioactive 56Ni mass of $0.0082\pm0.0016~M_{\odot}$. The derived progenitor mass of SN 2005cs is $18.2\pm1~M_{\odot}$, which is in-between those of low-luminosity and normal type IIP supernovae. Conclusions. The obtained progenitor mass of SN 2005cs is higher than derived from pre-explosion images. The masses of four type IIP supernovae estimated by means of hydrodynamic modeling are systematically higher than the average progenitor mass for the $9{-}25~M_{\odot}$ mass range. This result, if confirmed for a larger sample, would imply that a serious revision of the present-day view on the progenitors of type IIP supernovae is required. |
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| ISSN: | 0004-6361 1432-0746 |
| DOI: | 10.1051/0004-6361:200810272 |