dc.creator | Hiramatsu, Daichi | |
dc.creator | Howell, D. Andrew | |
dc.creator | Van Dyk, Schuyler D. | |
dc.creator | Goldberg, Jared A. | |
dc.creator | Maeda, Keiichi | |
dc.creator | Moriya, Takashi J. | |
dc.creator | Tominaga, Nozomu | |
dc.creator | Nomoto, Ken?ichi | |
dc.creator | Hosseinzadeh, Griffin | |
dc.creator | Arcavi, Iair | |
dc.creator | McCully, Curtis | |
dc.creator | Burke, Jamison | |
dc.creator | Bostroem, K. Azalee | |
dc.creator | Valenti, Stefano | |
dc.creator | Dong, Yize | |
dc.creator | Brown, Peter J. | |
dc.creator | Andrews, Jennifer E. | |
dc.creator | Bilinski, Christopher | |
dc.creator | Williams, G. Grant | |
dc.creator | Smith, Paul S. | |
dc.creator | Smith, Nathan | |
dc.creator | Sand, David J. | |
dc.creator | Anand, Gagandeep S. | |
dc.creator | Xu, Chengyuan | |
dc.creator | Filippenko, Alexei V. | |
dc.creator | Bersten, Melina Cecilia | |
dc.creator | Folatelli, Gaston | |
dc.creator | Kelly, Patrick L. | |
dc.creator | Noguchi, Toshihide | |
dc.creator | Itagaki, Koichi | |
dc.date.accessioned | 2022-10-06T00:56:12Z | |
dc.date.accessioned | 2022-10-15T06:04:28Z | |
dc.date.available | 2022-10-06T00:56:12Z | |
dc.date.available | 2022-10-15T06:04:28Z | |
dc.date.created | 2022-10-06T00:56:12Z | |
dc.date.issued | 2021-09-21 | |
dc.identifier | Hiramatsu, Daichi; Howell, D. Andrew; Van Dyk, Schuyler D.; Goldberg, Jared A.; Maeda, Keiichi; et al.; The electron-capture origin of supernova 2018zd; Nature Research; Nature Astronomy; 5; 9; 21-9-2021; 903-910 | |
dc.identifier | http://hdl.handle.net/11336/172069 | |
dc.identifier | 2397-3366 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4353163 | |
dc.description.abstract | In the transitional mass range (~8?10 solar masses) between white dwarf formation and iron core-collapse supernovae, stars are expected to produce an electron-capture supernova. Theoretically, these progenitors are thought to be super-asymptotic giant branch stars with a degenerate O + Ne + Mg core, and electron capture onto Ne and Mg nuclei should initiate core collapse1?4. However, no supernovae have unequivocally been identified from an electron-capture origin, partly because of uncertainty in theoretical predictions. Here we present six indicators of electron-capture supernovae and show that supernova 2018zd is the only known supernova with strong evidence for or consistent with all six: progenitor identification, circumstellar material, chemical composition5?7, explosion energy, light curve and nucleosynthesis8?12. For supernova 2018zd, we infer a super-asymptotic giant branch progenitor based on the faint candidate in the pre-explosion images and the chemically enriched circumstellar material revealed by the early ultraviolet colours and flash spectroscopy. The light-curve morphology and nebular emission lines can be explained by the low explosion energy and neutron-rich nucleosynthesis produced in an electron-capture supernova. This identification provides insights into the complex stellar evolution, supernova physics, cosmic nucleosynthesis and remnant populations in the transitional mass range. | |
dc.language | eng | |
dc.publisher | Nature Research | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1038/s41550-021-01384-2 | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/s41550-021-01384-2 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | SUPERNOVAE | |
dc.subject | HYDRODYNAMICS | |
dc.subject | STELLAR EVOLUTION | |
dc.title | The electron-capture origin of supernova 2018zd | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |