The analysis of the presence of substructures in 16 well-sampled clusters of galaxies suggests a stimulating hypothesis: Clusters could be classified as unimodal or bimodal, on the basis of the subclump distribution in the three-dimensional space of positions and velocities. The dynamic study of these clusters shows that their fundamental characteristics, in particular the virial masses, are not severely biased by the presence of subclustering if the system considered is bound.
Structures in Galaxy Clusters / Escalera, E.., Biviano, A., Girardi, M., Giuricin, G., Mardirossian, F., Mezzetti, M.. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - STAMPA. - 423:(1994), pp. 539-552. [10.1086/173833]
Structures in Galaxy Clusters
GIRARDI, MARISA;MARDIROSSIAN, FABIO;MEZZETTI, MARINO
1994-01-01
Abstract
The analysis of the presence of substructures in 16 well-sampled clusters of galaxies suggests a stimulating hypothesis: Clusters could be classified as unimodal or bimodal, on the basis of the subclump distribution in the three-dimensional space of positions and velocities. The dynamic study of these clusters shows that their fundamental characteristics, in particular the virial masses, are not severely biased by the presence of subclustering if the system considered is bound.Pubblicazioni consigliate
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