On a possible origin for the lack of old star clusters in the small magellanic cloud

We model the dynamical interaction between the Small and LargeMagellanic Clouds and their corresponding stellar cluster populations.Our goal is to explorewhether the lack of old clusters (≳7 Gyr) in the Small Magellanic Cloud (SMC) can be the result of the capture of clusters by the Large Magellanic...

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Detalles Bibliográficos
Autores principales: Carpintero, Daniel Diego, Gómez, Facundo A., Piatti, Andrés Eduardo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Astronómicas
methods: numerical
galaxies: individual: SMC
Magellanic Clouds
galaxies: star clusters: general
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85386
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85386
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
methods: numerical
galaxies: individual: SMC
Magellanic Clouds
galaxies: star clusters: general
spellingShingle Ciencias Astronómicas
methods: numerical
galaxies: individual: SMC
Magellanic Clouds
galaxies: star clusters: general
Carpintero, Daniel Diego
Gómez, Facundo A.
Piatti, Andrés Eduardo
On a possible origin for the lack of old star clusters in the small magellanic cloud
topic_facet Ciencias Astronómicas
methods: numerical
galaxies: individual: SMC
Magellanic Clouds
galaxies: star clusters: general
description We model the dynamical interaction between the Small and LargeMagellanic Clouds and their corresponding stellar cluster populations.Our goal is to explorewhether the lack of old clusters (≳7 Gyr) in the Small Magellanic Cloud (SMC) can be the result of the capture of clusters by the Large Magellanic Cloud (LMC) as well as their ejection due to the tidal interaction between the two galaxies. For this purpose, we perform a suite of numerical simulations probing a wide range of parameters for the orbit of the SMC about the LMC.We find that, for orbital eccentricities e ≥ 0.4, approximately 15 per cent of the SMC clusters are captured by the LMC. In addition, another 20-50 per cent of its clusters are ejected into the intergalactic medium. In general, the clusters lost by the SMC are the less tightly bound cluster population. The final LMC cluster distribution shows a spatial segregation between clusters that originally belonged to the LMC and those that were captured from the SMC. Clusters that originally belonged to the SMC are more likely to be found in the outskirts of the LMC. Within this scenario, it is possible to interpret the difference observed between the star field and cluster SMC age-metallicity relationships for ages ≳7Gyr.
format Articulo
Articulo
author Carpintero, Daniel Diego
Gómez, Facundo A.
Piatti, Andrés Eduardo
author_facet Carpintero, Daniel Diego
Gómez, Facundo A.
Piatti, Andrés Eduardo
author_sort Carpintero, Daniel Diego
title On a possible origin for the lack of old star clusters in the small magellanic cloud
title_short On a possible origin for the lack of old star clusters in the small magellanic cloud
title_full On a possible origin for the lack of old star clusters in the small magellanic cloud
title_fullStr On a possible origin for the lack of old star clusters in the small magellanic cloud
title_full_unstemmed On a possible origin for the lack of old star clusters in the small magellanic cloud
title_sort on a possible origin for the lack of old star clusters in the small magellanic cloud
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/85386
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AT gomezfacundoa onapossibleoriginforthelackofoldstarclustersinthesmallmagellaniccloud
AT piattiandreseduardo onapossibleoriginforthelackofoldstarclustersinthesmallmagellaniccloud
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