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Type Ia Progenitor Hunt in Ancient Remains

Kerzendorf, Wolfgang

Description

There is broad agreement that the stars which explode as Type Ia supernovae are white dwarfs. They have accreted material in a binary system until they are near the Chandrasekhar mass and detonate/deflagrate. The two main scenarios for this accretion process are merging with a companion white dwarf (double degenerate scenario), or accretion from a main-sequence to red giant donor (single degenerate scenario). The donor star survives post-explosion and would provide substantial evidence for the...[Show more]

dc.contributor.authorKerzendorf, Wolfgang
dc.coverage.spatialPadova, Italy
dc.date.accessioned2015-12-07T22:31:25Z
dc.date.created4-8 July 2011
dc.identifier.urihttp://hdl.handle.net/1885/22776
dc.description.abstractThere is broad agreement that the stars which explode as Type Ia supernovae are white dwarfs. They have accreted material in a binary system until they are near the Chandrasekhar mass and detonate/deflagrate. The two main scenarios for this accretion process are merging with a companion white dwarf (double degenerate scenario), or accretion from a main-sequence to red giant donor (single degenerate scenario). The donor star survives post-explosion and would provide substantial evidence for the single degenerate scenario, if found. Our team is analyzing stars in close proximity to Galactic Type Ia remnants to find surviving donor stars. In my talk I will introduce the different progenitor systems and the expected state for a donor star today. I will outline our search using high resolution spectroscopy and will present updated results.
dc.publisherCambridge University Press
dc.relation.ispartofseriesBinary Paths to Type Ia Supernovae Explosions
dc.sourceBinary Paths to Type Ia Supernovae Explosions
dc.subjectKeywords: Stars: abundances; Supernovae - supernova remnants
dc.titleType Ia Progenitor Hunt in Ancient Remains
dc.typeConference paper
local.description.notesImported from ARIES
dc.date.issued2013
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationu4630950xPUB23
local.type.statusPublished Version
local.contributor.affiliationKerzendorf, Wolfgang, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.startpage326
local.bibliographicCitation.lastpage330
local.identifier.doi10.1017/S174392131201530X
dc.date.updated2016-02-24T11:15:20Z
local.identifier.scopusID2-s2.0-84872727723
CollectionsANU Research Publications

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