Circumstellar material in type Ia supernovae via sodium absorption features
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Sternberg, A; Gal-Yam, Avishay; Simon, J; Leonard, D; Quimby, R; Phillips, Mark; Morrell, N; Thompson, Ian; Ivans, Inese; Marshall, J; Filippenko, Alexei; Yong, David; Patat, Ferdinando
Description
Type Ia supernovae are key tools for measuring distances on a cosmic scale. They are generally thought to be the thermonuclear explosion of an accreting white dwarf in a close binary system. The nature of the mass donor is still uncertain. In the single-degenerate model it is a main-sequence star or an evolved star, whereas in the double-degenerate model it is another white dwarf. We show that the velocity structure of absorbing material along the line of sight to 35 type Ia supernovae tends to...[Show more]
dc.contributor.author | Sternberg, A | |
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dc.contributor.author | Gal-Yam, Avishay | |
dc.contributor.author | Simon, J | |
dc.contributor.author | Leonard, D | |
dc.contributor.author | Quimby, R | |
dc.contributor.author | Phillips, Mark | |
dc.contributor.author | Morrell, N | |
dc.contributor.author | Thompson, Ian | |
dc.contributor.author | Ivans, Inese | |
dc.contributor.author | Marshall, J | |
dc.contributor.author | Filippenko, Alexei | |
dc.contributor.author | Yong, David | |
dc.contributor.author | Patat, Ferdinando | |
dc.date.accessioned | 2015-12-13T22:15:44Z | |
dc.identifier.issn | 0036-8075 | |
dc.identifier.uri | http://hdl.handle.net/1885/70534 | |
dc.description.abstract | Type Ia supernovae are key tools for measuring distances on a cosmic scale. They are generally thought to be the thermonuclear explosion of an accreting white dwarf in a close binary system. The nature of the mass donor is still uncertain. In the single-degenerate model it is a main-sequence star or an evolved star, whereas in the double-degenerate model it is another white dwarf. We show that the velocity structure of absorbing material along the line of sight to 35 type Ia supernovae tends to be blueshifted. These structures are likely signatures of gas outflows from the supernova progenitor systems. Thus, many type Ia supernovae in nearby spiral galaxies may originate in single-degenerate systems. | |
dc.publisher | American Association for the Advancement of Science | |
dc.source | Science | |
dc.subject | Keywords: sodium; absorption; accretion; cosmology; extraterrestrial matter; gas flow; nuclear explosion; outflow; sodium; velocity profile; absorption; article; astronomy; explosion; gas; priority journal; type Ia supernovae; velocity | |
dc.title | Circumstellar material in type Ia supernovae via sodium absorption features | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 333 | |
dc.date.issued | 2011 | |
local.identifier.absfor | 020110 - Stellar Astronomy and Planetary Systems | |
local.identifier.ariespublication | f2965xPUB2340 | |
local.type.status | Published Version | |
local.contributor.affiliation | Sternberg, A, Weizmann Institute of Science | |
local.contributor.affiliation | Gal-Yam, Avishay, Weizmann Institute of Science | |
local.contributor.affiliation | Simon, J, Observatories of the Carnegie Institution of Washington | |
local.contributor.affiliation | Leonard, D, San Diego State University | |
local.contributor.affiliation | Quimby, R, California Institute of Technology | |
local.contributor.affiliation | Phillips, Mark, Carnegie Observatories | |
local.contributor.affiliation | Morrell, N, Observatories of the Carnegie Institution of Washington | |
local.contributor.affiliation | Thompson, Ian, Observatories of the Carnegie Institution of Washington | |
local.contributor.affiliation | Ivans, Inese, University of Utah | |
local.contributor.affiliation | Marshall, J, Texas A&M University | |
local.contributor.affiliation | Filippenko, Alexei, University of California | |
local.contributor.affiliation | Yong, David, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Patat, Ferdinando, European Southern Observatory | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.issue | 6044 | |
local.bibliographicCitation.startpage | 856 | |
local.bibliographicCitation.lastpage | 859 | |
local.identifier.doi | 10.1126/science.1203836 | |
local.identifier.absseo | 970102 - Expanding Knowledge in the Physical Sciences | |
dc.date.updated | 2016-02-24T08:25:30Z | |
local.identifier.scopusID | 2-s2.0-80051614340 | |
local.identifier.thomsonID | 000293785400034 | |
Collections | ANU Research Publications |
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