Necessary criteria for spatial uniformity of groups of galaxies

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

In order to search for spatially uniform groups of galaxies, two necessary criteria for systems of this type are constructed. The pairwise distribution of galaxies (the distribution of their mutual distances) in the picture plane is used in both cases. This distribution is derived theoretically (in the limit N → ∞, where N is the number of galaxies in the group) and numerically for finite N. For this we considered the orthogonal projection onto a plane of a uniform Poisson process in a sphere of some radius. In the first criterion we use the Kolmogorov criterion to compare the calculated and observed integral pairwise distributions. In the second criterion we use dimensionless statistics associated with the moments of the pairwise distribution. An investigation of the Geller-Huchra and Mahtessian catalogs, in which groups of galaxies were selected based on the condition 9 ≤ N ≤ 30, showed that the overwhelming majority of these systems are spatially nonuniform. Some dynamical consequences of these results are discussed.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Necessary criteria for spatial uniformity of groups of galaxies 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 Necessary criteria for spatial uniformity of groups of galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Necessary criteria for spatial uniformity of groups of galaxies will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-968562

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.