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dc.contributor.author
Corsico, Alejandro Hugo
dc.contributor.author
Althaus, Leandro Gabriel
dc.date.available
2018-03-16T16:59:10Z
dc.date.issued
2005-09
dc.identifier.citation
Corsico, Alejandro Hugo; Althaus, Leandro Gabriel; Can pulsating PG1159 stars place constraints on the occurrence of core overshooting?; EDP Sciences; Astronomy and Astrophysics; 439; 3; 9-2005
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/39097
dc.description.abstract
The present letter is aimed at exploring the influence of overshooting during the central helium burning in pre-white dwarf progenitors on the pulsational properties of PG 1159 stars. To this end we follow the complete evolution an intermediate-mass white dwarf progenitor from the zero age main sequence through the thermally pulsing and born-again phases to the domain of the PG 1159 stars. Our results suggest that the presence of mode-trapping features in the period spacings of these hot pulsating stars could result from structure in the carbon-oxygen core. We find in particular that in order to get enough core structure consistent with observational demands, the occurrence of overshoot episodes during the central helium burning is needed. This conclusion is valid for thick helium envelopes like those predicted by our detailed evolutionary calculations. If the envelope thickness were substantially smaller, then the occurrence of core overshooting would be more difficult to disentangle from the effects related to the envelope transition zones.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Evolution of Stars
dc.subject
Interior Stars
dc.subject
White Dwarfs
dc.subject
Oscillations
dc.subject
Convection
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Can pulsating PG1159 stars place constraints on the occurrence of core overshooting?
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-06T15:14:09Z
dc.journal.volume
439
dc.journal.number
3
dc.journal.pais
Francia
dc.journal.ciudad
Les Ulis, France
dc.description.fil
Fil: Corsico, Alejandro Hugo. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
dc.description.fil
Fil: Althaus, Leandro Gabriel. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Universidad Politecnica de Catalunya; España
dc.journal.title
Astronomy and Astrophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361:200500154
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2005/33/aahe183/aahe183.html


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