SIMBAD references

2003ApJ...594..144P - Astrophys. J., 594, 144-153 (2003/September-1)

Galaxy alignments as a probe of the dynamical state of clusters.

PLIONIS M., BENOIST C., MAUROGORDATO S., FERRARI C. and BASILAKOS S.

Abstract (from CDS):

We present indications, based on a sample of 303 Abell clusters, for a relation between the dynamical state of clusters and the alignments of galaxy members with their parent cluster major-axis orientation as well as with the large-scale environment within which the clusters are embedded. The statistical results are complemented with a deep, wide-field case study of galaxy alignments in the cluster A521, which is characterized by multiple merging events (Maurogrdato et al.; Ferrari et al.) and whose galaxy members show a strong alignment signal out to ∼5 h–1 Mpc. Our results show that galaxy alignments appear to be stronger the more dynamically young the cluster is, especially when found in high-density environments. This relation complements the recently found ``cluster substructure-alignment connection'' (Plionis & Basilakos) by which dynamically young clusters, found in high-density environments, show stronger cluster-cluster alignments.

Abstract Copyright:

Journal keyword(s): Galaxies: Clusters: General - Cosmology: Large-Scale Structure of Universe

Simbad objects: 15

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2020.01.21-09:06:25

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