New estimates of the contribution of Wolf-Rayet stellar winds to the Galactic 26Al

12 pages, 8 figures.-- arXiv:0409580 astro-ph pre-print supplied.-- Final full-text version of the paper available at: http://dx.doi.org/10.1051/0004-6361:20041757.

Detalles Bibliográficos
Autores: Palacios, Ana, Meynet, Georges, Vuissoz, Christel, Knödlseder, J., Schaerer, Daniel, Cerviño, Miguel, Mowlavi, Nami
Tipo de recurso: artículo
Fecha de publicación:2005
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/6774
Acceso en línea:http://hdl.handle.net/10261/6774
Access Level:acceso abierto
Palabra clave:Nuclear reactions, nucleosynthesis, abundances
Stars: rotation
Galaxy: abundances
Stars: Wolf-Rayet
Stars: abundances
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spelling New estimates of the contribution of Wolf-Rayet stellar winds to the Galactic 26AlPalacios, AnaMeynet, GeorgesVuissoz, ChristelKnödlseder, J.Schaerer, DanielCerviño, MiguelMowlavi, NamiNuclear reactions, nucleosynthesis, abundancesStars: rotationGalaxy: abundancesStars: Wolf-RayetStars: abundances12 pages, 8 figures.-- arXiv:0409580 astro-ph pre-print supplied.-- Final full-text version of the paper available at: http://dx.doi.org/10.1051/0004-6361:20041757.SIMBAD Objects associated to the paper available at: http://simbad.u-strasbg.fr/simbo.pl?bibcode=2005A%26A...429..613P.We present new yields of 26Al from Wolf-Rayet stellar winds based on rotating stellar models which account well for numerous observed properties of massive stars. We study the impacts on the yields of a change of initial mass, metallicity and initial rotation velocity. We also consider the effects of a change of mass loss rates during the Wolf-Rayet phase. We show that for surface rotation velocities during the core H-burning phase matching to the observed ones, the quantity of 26Al ejected by a star of a given initial mass and metallicity is roughly doubled when the effects of rotation are taken into account. The metallicity dependence of the yield is, on the other hand, very similar to that obtained from non-rotating models. We estimate that at least about 20% to 50% (e.g. ∼0.6-1.4 M_O) of the live 26Al detected in the Milky-Way originates from Wolf-Rayet stellar winds. We show the importance of a good knowledge of the present metallicity gradient and star formation rate in our galaxy for modeling both the variation of the 26Al surface density with the galactocentric distance and the global contribution of the Wolf-Rayet stellar winds to the present galactic mass of 26Al.A. Palacios acknowledges financial support from ESA PRODEX fellowship no 90069.Peer reviewedEDP Sciences200820082005info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501480421 bytesapplication/pdfhttp://hdl.handle.net/10261/6774http://dx.doi.org/10.1051/0004-6361:20041757reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/67742026-05-22T06:33:51Z
dc.title.none.fl_str_mv New estimates of the contribution of Wolf-Rayet stellar winds to the Galactic 26Al
title New estimates of the contribution of Wolf-Rayet stellar winds to the Galactic 26Al
spellingShingle New estimates of the contribution of Wolf-Rayet stellar winds to the Galactic 26Al
Palacios, Ana
Nuclear reactions, nucleosynthesis, abundances
Stars: rotation
Galaxy: abundances
Stars: Wolf-Rayet
Stars: abundances
title_short New estimates of the contribution of Wolf-Rayet stellar winds to the Galactic 26Al
title_full New estimates of the contribution of Wolf-Rayet stellar winds to the Galactic 26Al
title_fullStr New estimates of the contribution of Wolf-Rayet stellar winds to the Galactic 26Al
title_full_unstemmed New estimates of the contribution of Wolf-Rayet stellar winds to the Galactic 26Al
title_sort New estimates of the contribution of Wolf-Rayet stellar winds to the Galactic 26Al
dc.creator.none.fl_str_mv Palacios, Ana
Meynet, Georges
Vuissoz, Christel
Knödlseder, J.
Schaerer, Daniel
Cerviño, Miguel
Mowlavi, Nami
author Palacios, Ana
author_facet Palacios, Ana
Meynet, Georges
Vuissoz, Christel
Knödlseder, J.
Schaerer, Daniel
Cerviño, Miguel
Mowlavi, Nami
author_role author
author2 Meynet, Georges
Vuissoz, Christel
Knödlseder, J.
Schaerer, Daniel
Cerviño, Miguel
Mowlavi, Nami
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Nuclear reactions, nucleosynthesis, abundances
Stars: rotation
Galaxy: abundances
Stars: Wolf-Rayet
Stars: abundances
topic Nuclear reactions, nucleosynthesis, abundances
Stars: rotation
Galaxy: abundances
Stars: Wolf-Rayet
Stars: abundances
description 12 pages, 8 figures.-- arXiv:0409580 astro-ph pre-print supplied.-- Final full-text version of the paper available at: http://dx.doi.org/10.1051/0004-6361:20041757.
publishDate 2005
dc.date.none.fl_str_mv 2005
2008
2008
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/6774
url http://hdl.handle.net/10261/6774
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 480421 bytes
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv http://dx.doi.org/10.1051/0004-6361:20041757
reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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