Binarity as the solution to the Stellar Evolution Enigma Posed by NGC 6791

Autores
Carraro, Giovanni; Benvenuto, Omar Gustavo
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Binary evolution is investigated as the source for the extreme horizontal branch (EHB) stars in the old and metal-rich open cluster NGC 6791. Employing an updated version of our binary stellar evolution code, we demonstrate that EHB stars naturally emerge from the common-envelope phase. In sum, the binary model reproduces the observed (Teff, log g) and temporal properties of the EHB overdensity tied to NGC 6971, without needing an ad hoc and anomalous mass-loss prescription.
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
binaries: general
open clusters and associations: individual (NGC 6791)
subdwarfs
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/87481
Acceder
id SEDICI_c4759c509116e2220e86217613d2ca02
oai_identifier_str oai:sedici.unlp.edu.ar:10915/87481
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Binarity as the solution to the Stellar Evolution Enigma Posed by NGC 6791Carraro, GiovanniBenvenuto, Omar GustavoCiencias Astronómicasbinaries: generalopen clusters and associations: individual (NGC 6791)subdwarfsBinary evolution is investigated as the source for the extreme horizontal branch (EHB) stars in the old and metal-rich open cluster NGC 6791. Employing an updated version of our binary stellar evolution code, we demonstrate that EHB stars naturally emerge from the common-envelope phase. In sum, the binary model reproduces the observed (T<sub>eff</sub>, log g) and temporal properties of the EHB overdensity tied to NGC 6971, without needing an ad hoc and anomalous mass-loss prescription.Instituto de Astrofísica de La Plata2017-05-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/87481enginfo:eu-repo/semantics/altIdentifier/issn/2041-8205info:eu-repo/semantics/altIdentifier/doi/10.3847/2041-8213/aa7131info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:17:14Zoai:sedici.unlp.edu.ar:10915/87481Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:17:14.386SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Binarity as the solution to the Stellar Evolution Enigma Posed by NGC 6791
title Binarity as the solution to the Stellar Evolution Enigma Posed by NGC 6791
spellingShingle Binarity as the solution to the Stellar Evolution Enigma Posed by NGC 6791
Carraro, Giovanni
Ciencias Astronómicas
binaries: general
open clusters and associations: individual (NGC 6791)
subdwarfs
title_short Binarity as the solution to the Stellar Evolution Enigma Posed by NGC 6791
title_full Binarity as the solution to the Stellar Evolution Enigma Posed by NGC 6791
title_fullStr Binarity as the solution to the Stellar Evolution Enigma Posed by NGC 6791
title_full_unstemmed Binarity as the solution to the Stellar Evolution Enigma Posed by NGC 6791
title_sort Binarity as the solution to the Stellar Evolution Enigma Posed by NGC 6791
dc.creator.none.fl_str_mv Carraro, Giovanni
Benvenuto, Omar Gustavo
author Carraro, Giovanni
author_facet Carraro, Giovanni
Benvenuto, Omar Gustavo
author_role author
author2 Benvenuto, Omar Gustavo
author2_role author
dc.subject.none.fl_str_mv Ciencias Astronómicas
binaries: general
open clusters and associations: individual (NGC 6791)
subdwarfs
topic Ciencias Astronómicas
binaries: general
open clusters and associations: individual (NGC 6791)
subdwarfs
dc.description.none.fl_txt_mv Binary evolution is investigated as the source for the extreme horizontal branch (EHB) stars in the old and metal-rich open cluster NGC 6791. Employing an updated version of our binary stellar evolution code, we demonstrate that EHB stars naturally emerge from the common-envelope phase. In sum, the binary model reproduces the observed (T<sub>eff</sub>, log g) and temporal properties of the EHB overdensity tied to NGC 6971, without needing an ad hoc and anomalous mass-loss prescription.
Instituto de Astrofísica de La Plata
description Binary evolution is investigated as the source for the extreme horizontal branch (EHB) stars in the old and metal-rich open cluster NGC 6791. Employing an updated version of our binary stellar evolution code, we demonstrate that EHB stars naturally emerge from the common-envelope phase. In sum, the binary model reproduces the observed (T<sub>eff</sub>, log g) and temporal properties of the EHB overdensity tied to NGC 6971, without needing an ad hoc and anomalous mass-loss prescription.
publishDate 2017
dc.date.none.fl_str_mv 2017-05-20
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/87481
url http://sedici.unlp.edu.ar/handle/10915/87481
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2041-8205
info:eu-repo/semantics/altIdentifier/doi/10.3847/2041-8213/aa7131
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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