Blue straggler stars in Galactic open clusters and the effect of field star contamination

Autores
Carraro, Giovanni; Vazquez, Ruben Angel; Moitinho, André
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context: We investigate the distribution of blue straggler stars in the field of three open star clusters. Aims: The main purpose is to highlight the crucial role played by general Galactic disk fore-/back-ground field stars, which are often located in the same region of the color magnitude diagram as blue straggler stars. Methods: We analyze photometry taken from the literature of 3 open clusters of intermediate/old age rich in blue straggler stars, which are projected in the direction of the Perseus arm, and study their spatial distribution and the color magnitude diagram. Results: As expected, we find that a large portion of the blue straggler population in these clusters are simply young field stars belonging to the spiral arm. This result has important consequences on the theories of the formation and statistics of blue straggler stars in different population environments: open clusters, globular clusters, or dwarf galaxies. Conclusions: As previously emphasized by many authors, a detailed membership analysis is mandatory before comparing the blue straggler population in star clusters to theoretical models. Moreover, these sequences of young field stars (blue plumes) are potentially powerful tracers of Galactic structure and they require further consideration.
Fil: Carraro, Giovanni. European Southern Obsevatory; Chile
Fil: Vazquez, Ruben Angel. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Moitinho, André. Faculdade de Cîencias da Universidade de Lisboa; Portugal
Materia
Stars
Galaxy
Milky Way structure
Open clusters
Associations
NGC 7789 (galaxia)
Berkeley 66 (galaxia)
Berkeley 70 (galaxia)
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/43241
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/43241
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Blue straggler stars in Galactic open clusters and the effect of field star contaminationCarraro, GiovanniVazquez, Ruben AngelMoitinho, AndréStarsGalaxyMilky Way structureOpen clustersAssociationsNGC 7789 (galaxia)Berkeley 66 (galaxia)Berkeley 70 (galaxia)https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context: We investigate the distribution of blue straggler stars in the field of three open star clusters. Aims: The main purpose is to highlight the crucial role played by general Galactic disk fore-/back-ground field stars, which are often located in the same region of the color magnitude diagram as blue straggler stars. Methods: We analyze photometry taken from the literature of 3 open clusters of intermediate/old age rich in blue straggler stars, which are projected in the direction of the Perseus arm, and study their spatial distribution and the color magnitude diagram. Results: As expected, we find that a large portion of the blue straggler population in these clusters are simply young field stars belonging to the spiral arm. This result has important consequences on the theories of the formation and statistics of blue straggler stars in different population environments: open clusters, globular clusters, or dwarf galaxies. Conclusions: As previously emphasized by many authors, a detailed membership analysis is mandatory before comparing the blue straggler population in star clusters to theoretical models. Moreover, these sequences of young field stars (blue plumes) are potentially powerful tracers of Galactic structure and they require further consideration.Fil: Carraro, Giovanni. European Southern Obsevatory; ChileFil: Vazquez, Ruben Angel. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Moitinho, André. Faculdade de Cîencias da Universidade de Lisboa; PortugalEDP Sciences2008-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/43241Carraro, Giovanni; Vazquez, Ruben Angel; Moitinho, André ; Blue straggler stars in Galactic open clusters and the effect of field star contamination; EDP Sciences; Astronomy and Astrophysics; 482; 3; 12-2008; 777-7810004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20078629info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2008/18/aa8629-07/aa8629-07.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:44:39Zoai:ri.conicet.gov.ar:11336/43241instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:44:40.172CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Blue straggler stars in Galactic open clusters and the effect of field star contamination
title Blue straggler stars in Galactic open clusters and the effect of field star contamination
spellingShingle Blue straggler stars in Galactic open clusters and the effect of field star contamination
Carraro, Giovanni
Stars
Galaxy
Milky Way structure
Open clusters
Associations
NGC 7789 (galaxia)
Berkeley 66 (galaxia)
Berkeley 70 (galaxia)
title_short Blue straggler stars in Galactic open clusters and the effect of field star contamination
title_full Blue straggler stars in Galactic open clusters and the effect of field star contamination
title_fullStr Blue straggler stars in Galactic open clusters and the effect of field star contamination
title_full_unstemmed Blue straggler stars in Galactic open clusters and the effect of field star contamination
title_sort Blue straggler stars in Galactic open clusters and the effect of field star contamination
dc.creator.none.fl_str_mv Carraro, Giovanni
Vazquez, Ruben Angel
Moitinho, André
author Carraro, Giovanni
author_facet Carraro, Giovanni
Vazquez, Ruben Angel
Moitinho, André
author_role author
author2 Vazquez, Ruben Angel
Moitinho, André
author2_role author
author
dc.subject.none.fl_str_mv Stars
Galaxy
Milky Way structure
Open clusters
Associations
NGC 7789 (galaxia)
Berkeley 66 (galaxia)
Berkeley 70 (galaxia)
topic Stars
Galaxy
Milky Way structure
Open clusters
Associations
NGC 7789 (galaxia)
Berkeley 66 (galaxia)
Berkeley 70 (galaxia)
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Context: We investigate the distribution of blue straggler stars in the field of three open star clusters. Aims: The main purpose is to highlight the crucial role played by general Galactic disk fore-/back-ground field stars, which are often located in the same region of the color magnitude diagram as blue straggler stars. Methods: We analyze photometry taken from the literature of 3 open clusters of intermediate/old age rich in blue straggler stars, which are projected in the direction of the Perseus arm, and study their spatial distribution and the color magnitude diagram. Results: As expected, we find that a large portion of the blue straggler population in these clusters are simply young field stars belonging to the spiral arm. This result has important consequences on the theories of the formation and statistics of blue straggler stars in different population environments: open clusters, globular clusters, or dwarf galaxies. Conclusions: As previously emphasized by many authors, a detailed membership analysis is mandatory before comparing the blue straggler population in star clusters to theoretical models. Moreover, these sequences of young field stars (blue plumes) are potentially powerful tracers of Galactic structure and they require further consideration.
Fil: Carraro, Giovanni. European Southern Obsevatory; Chile
Fil: Vazquez, Ruben Angel. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Moitinho, André. Faculdade de Cîencias da Universidade de Lisboa; Portugal
description Context: We investigate the distribution of blue straggler stars in the field of three open star clusters. Aims: The main purpose is to highlight the crucial role played by general Galactic disk fore-/back-ground field stars, which are often located in the same region of the color magnitude diagram as blue straggler stars. Methods: We analyze photometry taken from the literature of 3 open clusters of intermediate/old age rich in blue straggler stars, which are projected in the direction of the Perseus arm, and study their spatial distribution and the color magnitude diagram. Results: As expected, we find that a large portion of the blue straggler population in these clusters are simply young field stars belonging to the spiral arm. This result has important consequences on the theories of the formation and statistics of blue straggler stars in different population environments: open clusters, globular clusters, or dwarf galaxies. Conclusions: As previously emphasized by many authors, a detailed membership analysis is mandatory before comparing the blue straggler population in star clusters to theoretical models. Moreover, these sequences of young field stars (blue plumes) are potentially powerful tracers of Galactic structure and they require further consideration.
publishDate 2008
dc.date.none.fl_str_mv 2008-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/43241
Carraro, Giovanni; Vazquez, Ruben Angel; Moitinho, André ; Blue straggler stars in Galactic open clusters and the effect of field star contamination; EDP Sciences; Astronomy and Astrophysics; 482; 3; 12-2008; 777-781
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/43241
identifier_str_mv Carraro, Giovanni; Vazquez, Ruben Angel; Moitinho, André ; Blue straggler stars in Galactic open clusters and the effect of field star contamination; EDP Sciences; Astronomy and Astrophysics; 482; 3; 12-2008; 777-781
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20078629
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2008/18/aa8629-07/aa8629-07.html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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