Footprints in the sand: What can globular clusters tell us about NGC 4753 past?

NGC 4753 is a bright (Mv~-22.3) lenticular galaxy. It is a very interesting target to test different theories of formation of lenticular galaxies, due to its low-density environment and complex structure. We perform the first comprehensive study of NGC4753 globular cluster system (GCS), using Gemini...

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Autores principales: Caso, Juan Pablo, Bassino, Lilia Patricia, Gómez, Matias
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Astronómicas
Elliptical galaxies
Lenticular galaxies
Clusters
NGC 4753 (galaxia)
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/93933
https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stv2015
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-93933
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
Elliptical galaxies
Lenticular galaxies
Clusters
NGC 4753 (galaxia)
spellingShingle Ciencias Astronómicas
Elliptical galaxies
Lenticular galaxies
Clusters
NGC 4753 (galaxia)
Caso, Juan Pablo
Bassino, Lilia Patricia
Gómez, Matias
Footprints in the sand: What can globular clusters tell us about NGC 4753 past?
topic_facet Ciencias Astronómicas
Elliptical galaxies
Lenticular galaxies
Clusters
NGC 4753 (galaxia)
description NGC 4753 is a bright (Mv~-22.3) lenticular galaxy. It is a very interesting target to test different theories of formation of lenticular galaxies, due to its low-density environment and complex structure. We perform the first comprehensive study of NGC4753 globular cluster system (GCS), using Gemini/GMOS and CTIO/MosaicII images. Our results indicate a rather poor GCS of ~1000 members. Its azimuthal distribution follows the shape of the galaxy bulge. The GC colour distribution is peculiar, presenting an intermediate subpopulation in addition to blue and red ones. This intermediate subgroup can be explained by a single stellar population with an age of 1.53 Gyr and 0.5 − 1 Zo. The GC specific frequency Sn = 1.3 +/- 0.15 is surprisingly low for a galaxy of its class. The GC luminosity function (GCLF) is also peculiar, with an excess of bright GCs compared to the expected gaussian distribution. The underlying galaxy body has significant substructure, with remnants of spiral arms, dust filaments, and isophote twisting. This, and the fact that NGC4753 hosted two type Ia SNe, support the possibility that the intermediate GC subpopulation may have originated during a recent merger, 1-3 Gyr ago.
format Articulo
Articulo
author Caso, Juan Pablo
Bassino, Lilia Patricia
Gómez, Matias
author_facet Caso, Juan Pablo
Bassino, Lilia Patricia
Gómez, Matias
author_sort Caso, Juan Pablo
title Footprints in the sand: What can globular clusters tell us about NGC 4753 past?
title_short Footprints in the sand: What can globular clusters tell us about NGC 4753 past?
title_full Footprints in the sand: What can globular clusters tell us about NGC 4753 past?
title_fullStr Footprints in the sand: What can globular clusters tell us about NGC 4753 past?
title_full_unstemmed Footprints in the sand: What can globular clusters tell us about NGC 4753 past?
title_sort footprints in the sand: what can globular clusters tell us about ngc 4753 past?
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/93933
https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stv2015
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AT bassinoliliapatricia footprintsinthesandwhatcanglobularclusterstellusaboutngc4753past
AT gomezmatias footprintsinthesandwhatcanglobularclusterstellusaboutngc4753past
bdutipo_str Repositorios
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