dc.contributor.author | Kobayashi, Chiaki | |
dc.contributor.author | Nomoto, Ken'ichi | |
dc.contributor.author | Hachisu, Izumi | |
dc.date.accessioned | 2017-07-13T17:00:56Z | |
dc.date.available | 2017-07-13T17:00:56Z | |
dc.date.issued | 2015-04-23 | |
dc.identifier.citation | Kobayashi , C , Nomoto , K & Hachisu , I 2015 , ' Subclasses of Type Ia Supernovae as the origin of [α/Fe] ratios in dwarf spheroidal galaxies ' , Astrophysical Journal Letters , vol. 804 , no. 1 . https://doi.org/10.1088/2041-8205/804/1/L24 | |
dc.identifier.issn | 2041-8205 | |
dc.identifier.other | PURE: 10327571 | |
dc.identifier.other | PURE UUID: 538a971f-f181-4f20-b5cf-51618cef8787 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/1503.06739v2 | |
dc.identifier.other | Scopus: 84946156881 | |
dc.identifier.other | ORCID: /0000-0002-4343-0487/work/62750471 | |
dc.identifier.uri | http://hdl.handle.net/2299/18922 | |
dc.description | Chiaki Kobayashi, Ken’ichi Nomoto, and Izumi Hachisu, “Subclasses of Type Ia Supernovae as the origin of [α/Fe] ratios in dwarf spheroidal galaxies”, The Astrophysical Journal Letters, Vol. 804(1), April 2015. © 2015. The American Astronomical Society. | |
dc.description.abstract | Recent extensive observations of Type Ia Supernovae (SNe Ia) have revealed the existence of a diversity of SNe Ia, including SNe Iax. We introduce two possible channels in the single degenerate scenario: 1) double detonations in sub-Chandrasekhar (Ch) mass CO white dwarfs (WDs), where a thin He envelope is developed with relatively low accretion rates after He novae even at low metallicities, and 2) carbon deflagrations in Ch-mass possibly hybrid C+O+Ne WDs, where WD winds occur at [Fe/H] ~ -2.5 at high accretion rates. These subclasses of SNe Ia are rarer than `normal' SNe Ia and do not affect the chemical evolution in the solar neighborhood, but can be very important in metal-poor systems with stochastic star formation. In dwarf spheroidal galaxies in the Local Group, the decrease of [\alpha/Fe] ratios at [Fe/H] ~ -2 to -1.5 can be produced depending on the star formation history. SNe Iax give high [Mn/Fe], while sub-Ch-mass SNe Ia give low [Mn/Fe], and thus a model including a mix of the two is favoured by the available observations. | en |
dc.format.extent | 6 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astrophysical Journal Letters | |
dc.subject | astro-ph.GA | |
dc.subject | astro-ph.HE | |
dc.subject | astro-ph.SR | |
dc.title | Subclasses of Type Ia Supernovae as the origin of [α/Fe] ratios in dwarf spheroidal galaxies | en |
dc.contributor.institution | Centre for Astrophysics Research | |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Science & Technology Research Institute | |
dc.description.status | Peer reviewed | |
rioxxterms.version | VoR | |
rioxxterms.versionofrecord | https://doi.org/10.1088/2041-8205/804/1/L24 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |