The Aquarius Superclusters - I. Identification of Clusters and Superclusters

Details The Aquarius Superclusters - I. Identification of Clusters and Superclusters The Aquarius Superclusters - I. Identification of Clusters and Superclusters

2001-11-28

arxiv.org/abs/astro-ph/0111541v1

Astron.J.123:1200-1215,2002

Astronomy and Astrophysics

Astrophysics

LateX text (21 pages) and 12 (ps/eps/gif) figures; figures 5a, 5b and 6 are not included in the main LateX text; to be publish

Scientific paper

10.1086/338894

We study the distribution of galaxies and galaxy clusters in a 10^deg x 6^deg field in the Aquarius region. In addition to 63 clusters in the literature, we have found 39 new candidate clusters using a matched-filter technique and a counts-in-cells analysis. From redshift measurements of galaxies in the direction of these cluster candidates, we present new mean redshifts for 31 previously unobserved clusters, while improved mean redshifts are presented for 35 other systems. About 45% of the projected density enhancements are due to the superposition of clusters and/or groups of galaxies along the line of sight, but we could confirm for 72% of the cases that the candidates are real physical associations similar to the ones classified as rich galaxy clusters. On the other hand, the contamination due to galaxies not belonging to any concentration or located only in small groups along the line of sight is ~ 10%. Using a percolation radius of 10 h^{-1} Mpc (spatial density contrast of about 10), we detect two superclusters of galaxies in Aquarius, at z = 0.086 and at z = 0.112, respectively with 5 and 14 clusters. The latter supercluster may represent a space overdensity of about 160 times the average cluster density as measured from the Abell et al. (1989) cluster catalog, and is possibly connected to a 40 h^{-1} Mpc filament from z ~ 0.11 to 0.14.

Affiliated with

Also associated with

No associations

Rating

The Aquarius Superclusters - I. Identification of Clusters and Superclusters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Aquarius Superclusters - I. Identification of Clusters and Superclusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Aquarius Superclusters - I. Identification of Clusters and Superclusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-117635