dc.contributor.author | Napiwotzki, R. | |
dc.contributor.author | Karl, C. | |
dc.contributor.author | Nelemans, G. | |
dc.contributor.author | Yungelson, L. | |
dc.contributor.author | Christlieb, N. | |
dc.contributor.author | Drechsel, H. | |
dc.contributor.author | Heber, U. | |
dc.contributor.author | Homeier, D. | |
dc.contributor.author | Koester, D. | |
dc.contributor.author | Leibundgut, B. | |
dc.contributor.author | Marsh, T.R. | |
dc.contributor.author | Moehler, S. | |
dc.contributor.author | Renzini, A. | |
dc.contributor.author | Reimers, D. | |
dc.date.accessioned | 2008-06-27T14:13:03Z | |
dc.date.available | 2008-06-27T14:13:03Z | |
dc.date.issued | 2007 | |
dc.identifier.citation | Napiwotzki , 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.isbn | 978-1-58381-239-6 | |
dc.identifier.isbn | 978-1-58381-306-5 | |
dc.identifier.other | dspace: 2299/2141 | |
dc.identifier.uri | http://hdl.handle.net/2299/2141 | |
dc.description | Original paper can be found at: http://www.astrosociety.org/pubs/cs/361.html Copyright ASP | |
dc.description.abstract | We 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.format.extent | 225130 | |
dc.language.iso | eng | |
dc.publisher | Astronomical Society of the Pacific | |
dc.relation.ispartof | In: Procs of the 15th European Workshop on White Dwarfs - ASP Conf Series 372 | |
dc.title | Binary White Dwarfs in the Supernova Ia Progenitor Survey | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | Department of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
rioxxterms.type | Other | |
herts.preservation.rarelyaccessed | true | |