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

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-...

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Detalles Bibliográficos
Autores principales: Bassino, Lilia Patricia, Richtler, Tom, Dirsch, Boris
Formato: Articulo
Lenguaje:Inglés
Publicado: 2006
Materias:
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
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84325
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84325
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
Galaxies: clusters: general
Galaxies: elliptical and lenticular, cD
Galaxies: haloes
Galaxies: individual: NGC 1374, NGC 1379, NGC 1387
Galaxies: photometry
Galaxies: star clusters
spellingShingle 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
Bassino, Lilia Patricia
Richtler, Tom
Dirsch, Boris
Globular cluster systems in low-luminosity early-type galaxies near the Fornax cluster centre
topic_facet 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
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.
format Articulo
Articulo
author Bassino, Lilia Patricia
Richtler, Tom
Dirsch, Boris
author_facet Bassino, Lilia Patricia
Richtler, Tom
Dirsch, Boris
author_sort Bassino, Lilia Patricia
title Globular cluster systems in low-luminosity early-type galaxies near the Fornax cluster centre
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
publishDate 2006
url http://sedici.unlp.edu.ar/handle/10915/84325
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AT richtlertom globularclustersystemsinlowluminosityearlytypegalaxiesnearthefornaxclustercentre
AT dirschboris globularclustersystemsinlowluminosityearlytypegalaxiesnearthefornaxclustercentre
bdutipo_str Repositorios
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