Globular cluster systems in low-luminosity early-type galaxies near the Fornax cluster centre

Autores
Bassino, Lilia Patricia; Richtler, Tom; Dirsch, Boris
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a photometric study of the globular cluster systems (GCSs) of the Fornax cluster galaxies NGC 1374, NGC 1379 and NGC 1387. The data consist of images from the wide-field MOSAIC imager of the Cerro Tololo Inter-American Observatory (CTIO) 4-m telescope, obtained with Washington C and Kron-Cousins R filters. The images cover a field of 36 × 36 arcmin2, corresponding to 200 × 200 kpc2 at the Fornax distance. Two of the galaxies, NGC 1374 and NGC 1379, are low-luminosity ellipticals while NGC 1387 is a low-luminosity lenticular. Their cluster systems are still embedded in the cluster system of NGC 1399. Therefore, the use of a large field is crucial and some differences to previous work can be explained by this. The colour distributions of all GCSs are bimodal. NGC 1387 presents a particularly distinct separation between red and blue clusters and an overproportionally large population of red clusters. The radial distribution is different for blue and red clusters, red clusters being more concentrated towards the respective galaxies. The different colour and radial distributions point to the existence of two globular cluster subpopulations in these galaxies. Specific frequencies are in the range SN = 1.4-2.4, smaller than the typical values for elliptical galaxies. These galaxies might have suffered tidal stripping of blue globular clusters by NGC 1399.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
Galaxies: clusters: general
Galaxies: elliptical and lenticular, cD
Galaxies: haloes
Galaxies: individual: NGC 1374, NGC 1379, NGC 1387
Galaxies: photometry
Galaxies: star clusters
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:10915/84325
Acceder
id SEDICI_3109c42295986a8e64ebc9830551ddd1
oai_identifier_str oai:sedici.unlp.edu.ar:10915/84325
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Globular cluster systems in low-luminosity early-type galaxies near the Fornax cluster centreBassino, Lilia PatriciaRichtler, TomDirsch, BorisCiencias AstronómicasGalaxies: clusters: generalGalaxies: elliptical and lenticular, cDGalaxies: haloesGalaxies: individual: NGC 1374, NGC 1379, NGC 1387Galaxies: photometryGalaxies: star clustersWe present a photometric study of the globular cluster systems (GCSs) of the Fornax cluster galaxies NGC 1374, NGC 1379 and NGC 1387. The data consist of images from the wide-field MOSAIC imager of the Cerro Tololo Inter-American Observatory (CTIO) 4-m telescope, obtained with Washington C and Kron-Cousins R filters. The images cover a field of 36 × 36 arcmin<SUP>2</SUP>, corresponding to 200 × 200 kpc<SUP>2</SUP> at the Fornax distance. Two of the galaxies, NGC 1374 and NGC 1379, are low-luminosity ellipticals while NGC 1387 is a low-luminosity lenticular. Their cluster systems are still embedded in the cluster system of NGC 1399. Therefore, the use of a large field is crucial and some differences to previous work can be explained by this. The colour distributions of all GCSs are bimodal. NGC 1387 presents a particularly distinct separation between red and blue clusters and an overproportionally large population of red clusters. The radial distribution is different for blue and red clusters, red clusters being more concentrated towards the respective galaxies. The different colour and radial distributions point to the existence of two globular cluster subpopulations in these galaxies. Specific frequencies are in the range S<SUB>N</SUB> = 1.4-2.4, smaller than the typical values for elliptical galaxies. These galaxies might have suffered tidal stripping of blue globular clusters by NGC 1399.Facultad de Ciencias Astronómicas y Geofísicas2006info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf156-168http://sedici.unlp.edu.ar/handle/10915/84325enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2005.09919.xinfo: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:UNLP2025-11-05T12:55:33Zoai:sedici.unlp.edu.ar:10915/84325Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-11-05 12:55:34.261SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Globular cluster systems in low-luminosity early-type galaxies near the Fornax cluster centre
title Globular cluster systems in low-luminosity early-type galaxies near the Fornax cluster centre
spellingShingle Globular cluster systems in low-luminosity early-type galaxies near the Fornax cluster centre
Bassino, Lilia Patricia
Ciencias Astronómicas
Galaxies: clusters: general
Galaxies: elliptical and lenticular, cD
Galaxies: haloes
Galaxies: individual: NGC 1374, NGC 1379, NGC 1387
Galaxies: photometry
Galaxies: star clusters
title_short Globular cluster systems in low-luminosity early-type galaxies near the Fornax cluster centre
title_full Globular cluster systems in low-luminosity early-type galaxies near the Fornax cluster centre
title_fullStr Globular cluster systems in low-luminosity early-type galaxies near the Fornax cluster centre
title_full_unstemmed Globular cluster systems in low-luminosity early-type galaxies near the Fornax cluster centre
title_sort Globular cluster systems in low-luminosity early-type galaxies near the Fornax cluster centre
dc.creator.none.fl_str_mv Bassino, Lilia Patricia
Richtler, Tom
Dirsch, Boris
author Bassino, Lilia Patricia
author_facet Bassino, Lilia Patricia
Richtler, Tom
Dirsch, Boris
author_role author
author2 Richtler, Tom
Dirsch, Boris
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Galaxies: clusters: general
Galaxies: elliptical and lenticular, cD
Galaxies: haloes
Galaxies: individual: NGC 1374, NGC 1379, NGC 1387
Galaxies: photometry
Galaxies: star clusters
topic Ciencias Astronómicas
Galaxies: clusters: general
Galaxies: elliptical and lenticular, cD
Galaxies: haloes
Galaxies: individual: NGC 1374, NGC 1379, NGC 1387
Galaxies: photometry
Galaxies: star clusters
dc.description.none.fl_txt_mv We present a photometric study of the globular cluster systems (GCSs) of the Fornax cluster galaxies NGC 1374, NGC 1379 and NGC 1387. The data consist of images from the wide-field MOSAIC imager of the Cerro Tololo Inter-American Observatory (CTIO) 4-m telescope, obtained with Washington C and Kron-Cousins R filters. The images cover a field of 36 × 36 arcmin<SUP>2</SUP>, corresponding to 200 × 200 kpc<SUP>2</SUP> at the Fornax distance. Two of the galaxies, NGC 1374 and NGC 1379, are low-luminosity ellipticals while NGC 1387 is a low-luminosity lenticular. Their cluster systems are still embedded in the cluster system of NGC 1399. Therefore, the use of a large field is crucial and some differences to previous work can be explained by this. The colour distributions of all GCSs are bimodal. NGC 1387 presents a particularly distinct separation between red and blue clusters and an overproportionally large population of red clusters. The radial distribution is different for blue and red clusters, red clusters being more concentrated towards the respective galaxies. The different colour and radial distributions point to the existence of two globular cluster subpopulations in these galaxies. Specific frequencies are in the range S<SUB>N</SUB> = 1.4-2.4, smaller than the typical values for elliptical galaxies. These galaxies might have suffered tidal stripping of blue globular clusters by NGC 1399.
Facultad de Ciencias Astronómicas y Geofísicas
description We present a photometric study of the globular cluster systems (GCSs) of the Fornax cluster galaxies NGC 1374, NGC 1379 and NGC 1387. The data consist of images from the wide-field MOSAIC imager of the Cerro Tololo Inter-American Observatory (CTIO) 4-m telescope, obtained with Washington C and Kron-Cousins R filters. The images cover a field of 36 × 36 arcmin<SUP>2</SUP>, corresponding to 200 × 200 kpc<SUP>2</SUP> at the Fornax distance. Two of the galaxies, NGC 1374 and NGC 1379, are low-luminosity ellipticals while NGC 1387 is a low-luminosity lenticular. Their cluster systems are still embedded in the cluster system of NGC 1399. Therefore, the use of a large field is crucial and some differences to previous work can be explained by this. The colour distributions of all GCSs are bimodal. NGC 1387 presents a particularly distinct separation between red and blue clusters and an overproportionally large population of red clusters. The radial distribution is different for blue and red clusters, red clusters being more concentrated towards the respective galaxies. The different colour and radial distributions point to the existence of two globular cluster subpopulations in these galaxies. Specific frequencies are in the range S<SUB>N</SUB> = 1.4-2.4, smaller than the typical values for elliptical galaxies. These galaxies might have suffered tidal stripping of blue globular clusters by NGC 1399.
publishDate 2006
dc.date.none.fl_str_mv 2006
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/10915/84325
url http://sedici.unlp.edu.ar/handle/10915/84325
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/10.1111/j.1365-2966.2005.09919.x
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
156-168
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
_version_ 1847978595630186496
score 13.082534

Publicaciones similares