Intra-cluster globular clusters around NGC 1399 in Fornax?

Aims. We investigate whether the globular clusters (GCs) in the recently published sample of GCs in the Fornax cluster by Bergond and coworkers are indeed intra-cluster objects. Methods. We combine their catalogue of radial velocity measurements with our CTIO MOSAIC photometry in the Washington syst...

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Detalles Bibliográficos
Autores principales: Schuberth, Y., Richtler, Thomas, Bassino, Lilia Patricia, Hilker, M.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2008
Materias:
Ciencias Astronómicas
Galaxies: clusters: individual: Fornax cluster
Galaxies: elliptical and lenticular, cD
Galaxies: individual: NGC 1399
Galaxies: kinematics and dynamics
Galaxies: star clusters
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83008
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83008
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: individual: Fornax cluster
Galaxies: elliptical and lenticular, cD
Galaxies: individual: NGC 1399
Galaxies: kinematics and dynamics
Galaxies: star clusters
spellingShingle Ciencias Astronómicas
Galaxies: clusters: individual: Fornax cluster
Galaxies: elliptical and lenticular, cD
Galaxies: individual: NGC 1399
Galaxies: kinematics and dynamics
Galaxies: star clusters
Schuberth, Y.
Richtler, Thomas
Bassino, Lilia Patricia
Hilker, M.
Intra-cluster globular clusters around NGC 1399 in Fornax?
topic_facet Ciencias Astronómicas
Galaxies: clusters: individual: Fornax cluster
Galaxies: elliptical and lenticular, cD
Galaxies: individual: NGC 1399
Galaxies: kinematics and dynamics
Galaxies: star clusters
description Aims. We investigate whether the globular clusters (GCs) in the recently published sample of GCs in the Fornax cluster by Bergond and coworkers are indeed intra-cluster objects. Methods. We combine their catalogue of radial velocity measurements with our CTIO MOSAIC photometry in the Washington system and analyse the relation of metal-poor and metal-rich GCs with their host galaxies. Results. The metal-rich GCs appear to be kinematically associated with their respective host galaxies. The vast majority of the metal-poor GCs found in between the galaxies of the Fornax cluster have velocities that are consistent with their being members of the very extended NGC 1399 GC system. We find that when the sample is restricted to the most accurate velocity measurements, the GC velocity dispersion profile can be described with a mass model derived for the NGC 1399 GC system, within 80kpc. We identify one "vagrant" GC whose radial velocity suggests that it is not bound to any galaxy unless its orbit has a very large apogalactic distance.
format Articulo
Articulo
author Schuberth, Y.
Richtler, Thomas
Bassino, Lilia Patricia
Hilker, M.
author_facet Schuberth, Y.
Richtler, Thomas
Bassino, Lilia Patricia
Hilker, M.
author_sort Schuberth, Y.
title Intra-cluster globular clusters around NGC 1399 in Fornax?
title_short Intra-cluster globular clusters around NGC 1399 in Fornax?
title_full Intra-cluster globular clusters around NGC 1399 in Fornax?
title_fullStr Intra-cluster globular clusters around NGC 1399 in Fornax?
title_full_unstemmed Intra-cluster globular clusters around NGC 1399 in Fornax?
title_sort intra-cluster globular clusters around ngc 1399 in fornax?
publishDate 2008
url http://sedici.unlp.edu.ar/handle/10915/83008
work_keys_str_mv AT schuberthy intraclusterglobularclustersaroundngc1399infornax
AT richtlerthomas intraclusterglobularclustersaroundngc1399infornax
AT bassinoliliapatricia intraclusterglobularclustersaroundngc1399infornax
AT hilkerm intraclusterglobularclustersaroundngc1399infornax
bdutipo_str Repositorios
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