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

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...

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Detalles Bibliográficos
Autores principales: Carraro, Giovanni, Benvenuto, Omar Gustavo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Astronómicas
binaries: general
open clusters and associations: individual (NGC 6791)
subdwarfs
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87481
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87481
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
binaries: general
open clusters and associations: individual (NGC 6791)
subdwarfs
spellingShingle Ciencias Astronómicas
binaries: general
open clusters and associations: individual (NGC 6791)
subdwarfs
Carraro, Giovanni
Benvenuto, Omar Gustavo
Binarity as the solution to the Stellar Evolution Enigma Posed by NGC 6791
topic_facet Ciencias Astronómicas
binaries: general
open clusters and associations: individual (NGC 6791)
subdwarfs
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.
format Articulo
Articulo
author Carraro, Giovanni
Benvenuto, Omar Gustavo
author_facet Carraro, Giovanni
Benvenuto, Omar Gustavo
author_sort Carraro, Giovanni
title Binarity as the solution to the Stellar Evolution Enigma Posed by NGC 6791
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
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/87481
work_keys_str_mv AT carrarogiovanni binarityasthesolutiontothestellarevolutionenigmaposedbyngc6791
AT benvenutoomargustavo binarityasthesolutiontothestellarevolutionenigmaposedbyngc6791
bdutipo_str Repositorios
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