Show simple item record

Binary White Dwarfs in the Supernova Ia Progenitor Survey

dc.contributor.authorNapiwotzki, R.
dc.contributor.authorKarl, C.
dc.contributor.authorNelemans, G.
dc.contributor.authorYungelson, L.
dc.contributor.authorChristlieb, N.
dc.contributor.authorDrechsel, H.
dc.contributor.authorHeber, U.
dc.contributor.authorHomeier, D.
dc.contributor.authorKoester, D.
dc.contributor.authorLeibundgut, B.
dc.contributor.authorMarsh, T.R.
dc.contributor.authorMoehler, S.
dc.contributor.authorRenzini, A.
dc.contributor.authorReimers, D.
dc.date.accessioned2008-06-27T14:13:03Z
dc.date.available2008-06-27T14:13:03Z
dc.date.issued2007
dc.identifier.citationNapiwotzki , R , Karl , C , Nelemans , G , Yungelson , L , Christlieb , N , Drechsel , H , Heber , U , Homeier , D , Koester , D , Leibundgut , B , Marsh , T R , Moehler , S , Renzini , A & Reimers , D 2007 , Binary White Dwarfs in the Supernova Ia Progenitor Survey . in In: Procs of the 15th European Workshop on White Dwarfs - ASP Conf Series 372 . Astronomical Society of the Pacific , pp. 387-392 .
dc.identifier.isbn978-1-58381-239-6
dc.identifier.isbn978-1-58381-306-5
dc.identifier.otherPURE: 151614
dc.identifier.otherPURE UUID: b998054c-c620-49f7-8b68-236a04a36477
dc.identifier.otherdspace: 2299/2141
dc.identifier.urihttp://hdl.handle.net/2299/2141
dc.descriptionOriginal paper can be found at: http://www.astrosociety.org/pubs/cs/361.html Copyright ASP
dc.description.abstractWe report results of a systematic radial velocity survey for double degenerate (DD) binaries as potential progenitors of type Ia supernovae: SPY (ESO Supernovae Ia Progenitor surveY). More than 1000 white dwarfs (WDs) and pre-white dwarfs were observed with the VLT. The aim of SPY is to perform a statistically significant test of the DD scenario. We give an overview of the project and follow-up results. The sample is used for two tests of the contempo- rary picture of close binary evolution leading to DDs. It is shown that the SPY observations of low mass He-core WDs (HeWDs) are inconsistent with the idea that they all reside in close binary systems. We carry out a model atmosphere analysis of WDs residing in double-lined binaries and estimate individual cooling ages. For a number of systems the younger (and hotter) component is the less massive one, as expected. However, for some systems the mass ratio is inverted.en
dc.language.isoeng
dc.publisherAstronomical Society of the Pacific
dc.relation.ispartofIn: Procs of the 15th European Workshop on White Dwarfs - ASP Conf Series 372
dc.titleBinary White Dwarfs in the Supernova Ia Progenitor Surveyen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionDepartment of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue


Files in this item

Thumbnail
Name:
902253.pdf
Size:
219.8Kb
Format:
PDF
View/Open

This item appears in the following Collection(s)

Show simple item record