Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268

Autores
Caso, Juan Pablo; Bassino, Lilia Patricia; Gómez, Matías
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a new photometric study of NGC 3258 and NGC 3268 globular cluster systems (GCSs), using images in filters B, C, V, R, I and z', obtained from four different telescopes. The wide spatial coverage allows us to estimate the whole extension of both GCSs more precisely than in previous works, and new values for the richness of GC subpopulations. We find differences in the azimuthal distribution between blue (metal-poor) and red (metal-rich) globular clusters (GCs), and confirm that radial profiles flatten towards the centre of the galaxies. In both cases we detected a radial gradient in the colour peak of blue GCs which might be related to the construction of the GCSs. We analyse the similarities and differences in both GCSs, in the context of the possible evolutionary histories of the host galaxies. We also obtain photometric metallicities for a large number of GC candidates around NGC 3258, by applying multicolour-metallicity relations. These results confirm the bimodal metallicity distribution.
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
Galaxies: elliptical and lenticular
Galaxies: evolution
Galaxies: star clusters: individual: NGC 3258 & NGC 3268
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:10915/93479
Acceder
id SEDICI_b778d768426250ef04f14c8ba755fd30
oai_identifier_str oai:sedici.unlp.edu.ar:10915/93479
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268Caso, Juan PabloBassino, Lilia PatriciaGómez, MatíasCiencias AstronómicasGalaxies: elliptical and lenticularGalaxies: evolutionGalaxies: star clusters: individual: NGC 3258 & NGC 3268We present a new photometric study of NGC 3258 and NGC 3268 globular cluster systems (GCSs), using images in filters B, C, V, R, I and z', obtained from four different telescopes. The wide spatial coverage allows us to estimate the whole extension of both GCSs more precisely than in previous works, and new values for the richness of GC subpopulations. We find differences in the azimuthal distribution between blue (metal-poor) and red (metal-rich) globular clusters (GCs), and confirm that radial profiles flatten towards the centre of the galaxies. In both cases we detected a radial gradient in the colour peak of blue GCs which might be related to the construction of the GCSs. We analyse the similarities and differences in both GCSs, in the context of the possible evolutionary histories of the host galaxies. We also obtain photometric metallicities for a large number of GC candidates around NGC 3258, by applying multicolour-metallicity relations. These results confirm the bimodal metallicity distribution.Instituto de Astrofísica de La Plata2017-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf3227-3238http://sedici.unlp.edu.ar/handle/10915/93479enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx1393info:eu-repo/semantics/altIdentifier/hdl/11336/64625info: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:UNLP2025-09-29T11:19:26Zoai:sedici.unlp.edu.ar:10915/93479Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:19:26.926SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268
title Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268
spellingShingle Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268
Caso, Juan Pablo
Ciencias Astronómicas
Galaxies: elliptical and lenticular
Galaxies: evolution
Galaxies: star clusters: individual: NGC 3258 & NGC 3268
title_short Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268
title_full Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268
title_fullStr Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268
title_full_unstemmed Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268
title_sort Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268
dc.creator.none.fl_str_mv Caso, Juan Pablo
Bassino, Lilia Patricia
Gómez, Matías
author Caso, Juan Pablo
author_facet Caso, Juan Pablo
Bassino, Lilia Patricia
Gómez, Matías
author_role author
author2 Bassino, Lilia Patricia
Gómez, Matías
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Galaxies: elliptical and lenticular
Galaxies: evolution
Galaxies: star clusters: individual: NGC 3258 & NGC 3268
topic Ciencias Astronómicas
Galaxies: elliptical and lenticular
Galaxies: evolution
Galaxies: star clusters: individual: NGC 3258 & NGC 3268
dc.description.none.fl_txt_mv We present a new photometric study of NGC 3258 and NGC 3268 globular cluster systems (GCSs), using images in filters B, C, V, R, I and z', obtained from four different telescopes. The wide spatial coverage allows us to estimate the whole extension of both GCSs more precisely than in previous works, and new values for the richness of GC subpopulations. We find differences in the azimuthal distribution between blue (metal-poor) and red (metal-rich) globular clusters (GCs), and confirm that radial profiles flatten towards the centre of the galaxies. In both cases we detected a radial gradient in the colour peak of blue GCs which might be related to the construction of the GCSs. We analyse the similarities and differences in both GCSs, in the context of the possible evolutionary histories of the host galaxies. We also obtain photometric metallicities for a large number of GC candidates around NGC 3258, by applying multicolour-metallicity relations. These results confirm the bimodal metallicity distribution.
Instituto de Astrofísica de La Plata
description We present a new photometric study of NGC 3258 and NGC 3268 globular cluster systems (GCSs), using images in filters B, C, V, R, I and z', obtained from four different telescopes. The wide spatial coverage allows us to estimate the whole extension of both GCSs more precisely than in previous works, and new values for the richness of GC subpopulations. We find differences in the azimuthal distribution between blue (metal-poor) and red (metal-rich) globular clusters (GCs), and confirm that radial profiles flatten towards the centre of the galaxies. In both cases we detected a radial gradient in the colour peak of blue GCs which might be related to the construction of the GCSs. We analyse the similarities and differences in both GCSs, in the context of the possible evolutionary histories of the host galaxies. We also obtain photometric metallicities for a large number of GC candidates around NGC 3258, by applying multicolour-metallicity relations. These results confirm the bimodal metallicity distribution.
publishDate 2017
dc.date.none.fl_str_mv 2017-09
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/10915/93479
url http://sedici.unlp.edu.ar/handle/10915/93479
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0035-8711
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx1393
info:eu-repo/semantics/altIdentifier/hdl/11336/64625
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
3227-3238
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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