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

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 wo...

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Detalles Bibliográficos
Autores principales: Caso, Juan Pablo, Bassino, Lilia Patricia, Gómez, Matías
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Astronómicas
Galaxies: elliptical and lenticular
Galaxies: evolution
Galaxies: star clusters: individual: NGC 3258 & NGC 3268
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/93479
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-93479
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: elliptical and lenticular
Galaxies: evolution
Galaxies: star clusters: individual: NGC 3258 & NGC 3268
spellingShingle Ciencias Astronómicas
Galaxies: elliptical and lenticular
Galaxies: evolution
Galaxies: star clusters: individual: NGC 3258 & NGC 3268
Caso, Juan Pablo
Bassino, Lilia Patricia
Gómez, Matías
Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268
topic_facet Ciencias Astronómicas
Galaxies: elliptical and lenticular
Galaxies: evolution
Galaxies: star clusters: individual: NGC 3258 & NGC 3268
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.
format Articulo
Articulo
author Caso, Juan Pablo
Bassino, Lilia Patricia
Gómez, Matías
author_facet Caso, Juan Pablo
Bassino, Lilia Patricia
Gómez, Matías
author_sort Caso, Juan Pablo
title Globular cluster systems as tracers of the evolutionary history in NGC 3258 and 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
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/93479
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AT bassinoliliapatricia globularclustersystemsastracersoftheevolutionaryhistoryinngc3258andngc3268
AT gomezmatias globularclustersystemsastracersoftheevolutionaryhistoryinngc3258andngc3268
bdutipo_str Repositorios
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