An unusual white dwarf star may be a surviving remnant of a subluminous Type Ia supernova
Subluminous Type Ia supernovae, such as the Type Iax–class prototype SN 2002cx, are described by a variety of models such as the failed detonation and partial deflagration of an accreting carbon-oxygen white dwarf star or the explosion of an accreting, hybrid carbon-oxygen-neon core. These models pr...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
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The American Association for the Advancement of Science
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/71744 |
| _version_ | 1848762561406697472 |
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| author | Vennes, S. Nemeth, P. Kawka, Adela Thorstensen, J. Khalack, V. Ferrario, L. Alper, E. |
| author_facet | Vennes, S. Nemeth, P. Kawka, Adela Thorstensen, J. Khalack, V. Ferrario, L. Alper, E. |
| author_sort | Vennes, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Subluminous Type Ia supernovae, such as the Type Iax–class prototype SN 2002cx, are described by a variety of models such as the failed detonation and partial deflagration of an accreting carbon-oxygen white dwarf star or the explosion of an accreting, hybrid carbon-oxygen-neon core. These models predict that bound remnants survive such events with, according to some simulations, a high kick velocity. We report the discovery of a high proper motion, low-mass white dwarf (LP 40-365) that travels at a velocity greater than the Galactic escape velocity and whose peculiar atmosphere is dominated by intermediate-mass elements. Strong evidence indicates that this partially burnt remnant was ejected following a subluminous Type Ia supernova event. This supports the viability of single-degenerate supernova progenitors. |
| first_indexed | 2025-11-14T10:49:31Z |
| format | Journal Article |
| id | curtin-20.500.11937-71744 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:49:31Z |
| publishDate | 2017 |
| publisher | The American Association for the Advancement of Science |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-717442019-02-20T02:57:24Z An unusual white dwarf star may be a surviving remnant of a subluminous Type Ia supernova Vennes, S. Nemeth, P. Kawka, Adela Thorstensen, J. Khalack, V. Ferrario, L. Alper, E. Subluminous Type Ia supernovae, such as the Type Iax–class prototype SN 2002cx, are described by a variety of models such as the failed detonation and partial deflagration of an accreting carbon-oxygen white dwarf star or the explosion of an accreting, hybrid carbon-oxygen-neon core. These models predict that bound remnants survive such events with, according to some simulations, a high kick velocity. We report the discovery of a high proper motion, low-mass white dwarf (LP 40-365) that travels at a velocity greater than the Galactic escape velocity and whose peculiar atmosphere is dominated by intermediate-mass elements. Strong evidence indicates that this partially burnt remnant was ejected following a subluminous Type Ia supernova event. This supports the viability of single-degenerate supernova progenitors. 2017 Journal Article http://hdl.handle.net/20.500.11937/71744 10.1126/science.aam8378 The American Association for the Advancement of Science fulltext |
| spellingShingle | Vennes, S. Nemeth, P. Kawka, Adela Thorstensen, J. Khalack, V. Ferrario, L. Alper, E. An unusual white dwarf star may be a surviving remnant of a subluminous Type Ia supernova |
| title | An unusual white dwarf star may be a surviving remnant of a subluminous Type Ia supernova |
| title_full | An unusual white dwarf star may be a surviving remnant of a subluminous Type Ia supernova |
| title_fullStr | An unusual white dwarf star may be a surviving remnant of a subluminous Type Ia supernova |
| title_full_unstemmed | An unusual white dwarf star may be a surviving remnant of a subluminous Type Ia supernova |
| title_short | An unusual white dwarf star may be a surviving remnant of a subluminous Type Ia supernova |
| title_sort | unusual white dwarf star may be a surviving remnant of a subluminous type ia supernova |
| url | http://hdl.handle.net/20.500.11937/71744 |