NGC 4337: an overlooked old cluster in the inner disc of the Milky Way

Autores
Carraro, Giovanni; Giorgi, Edgard Ervar Salvador; Costa, Edgardo; Vázquez, Rubén Ángel
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Galactic open clusters do not survive long in the high-density regions of the inner Galactic disc. Inside the solar ring only 11 open clusters are known with ages older than 1 Gyr. We show here, basing on deep, high-quality photometry, that NGC 4337, contrary to earlier findings, is indeed an old open cluster. The cluster is located very close to the conspicuous star cluster Trumpler 20, as well misclassified in the past, and that has received so much attention in recent years. NGC 4337 shows a significant clump of He-burning stars which was not detected previously. Its beautiful colour-magnitude diagram is strikingly similar to the one of the classical old open clusters IC 4651, NGC 752, and NGC 3680, and this suggests similar age and composition. A spectroscopic study is much needed to confirm our findings. This, in turn, would also allow us to better define the inner disc radial abundance gradient and its temporal evolution. To this aim, a list of clump star candidates is provided.
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
Open clusters and associations: General
Open clusters and associations: Individual: NGC 4337
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:10915/85297
Acceder
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spelling NGC 4337: an overlooked old cluster in the inner disc of the Milky WayCarraro, GiovanniGiorgi, Edgard Ervar SalvadorCosta, EdgardoVázquez, Rubén ÁngelCiencias AstronómicasOpen clusters and associations: GeneralOpen clusters and associations: Individual: NGC 4337Galactic open clusters do not survive long in the high-density regions of the inner Galactic disc. Inside the solar ring only 11 open clusters are known with ages older than 1 Gyr. We show here, basing on deep, high-quality photometry, that NGC 4337, contrary to earlier findings, is indeed an old open cluster. The cluster is located very close to the conspicuous star cluster Trumpler 20, as well misclassified in the past, and that has received so much attention in recent years. NGC 4337 shows a significant clump of He-burning stars which was not detected previously. Its beautiful colour-magnitude diagram is strikingly similar to the one of the classical old open clusters IC 4651, NGC 752, and NGC 3680, and this suggests similar age and composition. A spectroscopic study is much needed to confirm our findings. This, in turn, would also allow us to better define the inner disc radial abundance gradient and its temporal evolution. To this aim, a list of clump star candidates is provided.Instituto de Astrofísica de La Plata2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfL36-L40http://sedici.unlp.edu.ar/handle/10915/85297enginfo:eu-repo/semantics/altIdentifier/issn/1745-3925info:eu-repo/semantics/altIdentifier/doi/10.1093/mnrasl/slu044info: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:UNLP2025-10-22T16:57:13Zoai:sedici.unlp.edu.ar:10915/85297Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:57:13.826SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv NGC 4337: an overlooked old cluster in the inner disc of the Milky Way
title NGC 4337: an overlooked old cluster in the inner disc of the Milky Way
spellingShingle NGC 4337: an overlooked old cluster in the inner disc of the Milky Way
Carraro, Giovanni
Ciencias Astronómicas
Open clusters and associations: General
Open clusters and associations: Individual: NGC 4337
title_short NGC 4337: an overlooked old cluster in the inner disc of the Milky Way
title_full NGC 4337: an overlooked old cluster in the inner disc of the Milky Way
title_fullStr NGC 4337: an overlooked old cluster in the inner disc of the Milky Way
title_full_unstemmed NGC 4337: an overlooked old cluster in the inner disc of the Milky Way
title_sort NGC 4337: an overlooked old cluster in the inner disc of the Milky Way
dc.creator.none.fl_str_mv Carraro, Giovanni
Giorgi, Edgard Ervar Salvador
Costa, Edgardo
Vázquez, Rubén Ángel
author Carraro, Giovanni
author_facet Carraro, Giovanni
Giorgi, Edgard Ervar Salvador
Costa, Edgardo
Vázquez, Rubén Ángel
author_role author
author2 Giorgi, Edgard Ervar Salvador
Costa, Edgardo
Vázquez, Rubén Ángel
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Open clusters and associations: General
Open clusters and associations: Individual: NGC 4337
topic Ciencias Astronómicas
Open clusters and associations: General
Open clusters and associations: Individual: NGC 4337
dc.description.none.fl_txt_mv Galactic open clusters do not survive long in the high-density regions of the inner Galactic disc. Inside the solar ring only 11 open clusters are known with ages older than 1 Gyr. We show here, basing on deep, high-quality photometry, that NGC 4337, contrary to earlier findings, is indeed an old open cluster. The cluster is located very close to the conspicuous star cluster Trumpler 20, as well misclassified in the past, and that has received so much attention in recent years. NGC 4337 shows a significant clump of He-burning stars which was not detected previously. Its beautiful colour-magnitude diagram is strikingly similar to the one of the classical old open clusters IC 4651, NGC 752, and NGC 3680, and this suggests similar age and composition. A spectroscopic study is much needed to confirm our findings. This, in turn, would also allow us to better define the inner disc radial abundance gradient and its temporal evolution. To this aim, a list of clump star candidates is provided.
Instituto de Astrofísica de La Plata
description Galactic open clusters do not survive long in the high-density regions of the inner Galactic disc. Inside the solar ring only 11 open clusters are known with ages older than 1 Gyr. We show here, basing on deep, high-quality photometry, that NGC 4337, contrary to earlier findings, is indeed an old open cluster. The cluster is located very close to the conspicuous star cluster Trumpler 20, as well misclassified in the past, and that has received so much attention in recent years. NGC 4337 shows a significant clump of He-burning stars which was not detected previously. Its beautiful colour-magnitude diagram is strikingly similar to the one of the classical old open clusters IC 4651, NGC 752, and NGC 3680, and this suggests similar age and composition. A spectroscopic study is much needed to confirm our findings. This, in turn, would also allow us to better define the inner disc radial abundance gradient and its temporal evolution. To this aim, a list of clump star candidates is provided.
publishDate 2014
dc.date.none.fl_str_mv 2014
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/10915/85297
url http://sedici.unlp.edu.ar/handle/10915/85297
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1745-3925
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnrasl/slu044
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
L36-L40
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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