info:eu-repo/semantics/article
Intra-cluster Globular Clusters in a Simulated Galaxy Cluster
Fecha
2018-01Registro en:
Ramos Almendares, Felipe Alberto; Abadi, Mario Gabriel; Muriel, Hernan; Coenda, Valeria; Intra-cluster Globular Clusters in a Simulated Galaxy Cluster; IOP Publishing; Astrophysical Journal; 853; 1; 1-2018; 1-7
0004-637X
1538-4357
CONICET Digital
CONICET
Autor
Ramos Almendares, Felipe Alberto
Abadi, Mario Gabriel
Muriel, Hernan
Coenda, Valeria
Resumen
Using a cosmological dark matter simulation of a galaxy-cluster halo, we follow the temporal evolution of its globular cluster population. To mimic the red and blue globular cluster populations, we select at high redshift (z ∼ 1) two sets of particles from individual galactic halos constrained by the fact that, at redshift z = 0, they have density profiles similar to observed ones. At redshift z = 0, approximately 60% of our selected globular clusters were removed from their original halos building up the intra-cluster globular cluster population, while the remaining 40% are still gravitationally bound to their original galactic halos. As the blue population is more extended than the red one, the intra-cluster globular cluster population is dominated by blue globular clusters, with a relative fraction that grows from 60% at redshift z = 0 up to 83% for redshift z ∼ 2. In agreement with observational results for the Virgo galaxy cluster, the blue intra-cluster globular cluster population is more spatially extended than the red one, pointing to a tidally disrupted origin.
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