Large-scale galaxy distribution in the Las Campanas Redshift Survey

Details Large-scale galaxy distribution in the Las Campanas Redshift Survey Large-scale galaxy distribution in the Las Campanas Redshift Survey

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001mnras.322..369d&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 322, Issue 2, pp. 369-388.

Astronomy and Astrophysics

Astronomy

25

Surveys, Galaxies: Clusters: General, Large-Scale Structure Of Universe

Scientific paper

We make use of three-dimensional clustering analysis, inertia tensor methods, and the minimal spanning tree technique to estimate some physical and statistical characteristics of the large-scale galaxy distribution and, in particular, of the sample of overdense regions seen in the Las Campanas Redshift Survey (LCRS). Our investigation provides additional evidence for a network of structures found in our core sampling analysis of the LCRS: a system of rich sheet-like structures, which in turn surround large underdense regions criss-crossed by a variety of filamentary structures. We find that the overdense regions contain ~40-50 per cent of LCRS galaxies and have proper sizes similar to those of nearby superclusters. The formation of such structures can be roughly described as a non-linear compression of protowalls of typical cross-sectional size ~20-25h-1Mpc this scale is ~5 times the conventional value for the onset of non-linear clustering - to wit, r0, the autocorrelation length for galaxies. The comparison with available simulations and theoretical estimates shows that the formation of structure elements with parameters similar to those observed is presently possible only in low-density cosmological models, Ωmh~0.2-0.3, with a suitable large-scale bias between galaxies and dark matter.

Affiliated with

Also associated with

No associations

Rating

Large-scale galaxy distribution in the Las Campanas Redshift Survey 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 Large-scale galaxy distribution in the Las Campanas Redshift Survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large-scale galaxy distribution in the Las Campanas Redshift Survey will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1254473