SIMBAD references

2008MNRAS.391.1341M - Mon. Not. R. Astron. Soc., 391, 1341-1349 (2008/December-2)

The density contrast of the Shapley supercluster.


Abstract (from CDS):

We calculate the density contrast of the Shapley supercluster (SSC) based on the enhanced abundance of X-ray clusters in it using the extended Press-Schechter formalism. We derive a total SSC mass of Mtot= (4.4 ±0.44)x1016M within a sphere of 50Mpc centred at a distance of about 160Mpc. The non-linear fractional density contrast of the sphere is (1 + δ) = 1.76±0.17 relative to the mean matter density in the Universe, but the contrast increases in the interior of the SSC. Including the cosmological constant, the SSC region is found to be gravitationally unbound. The SSC contributes only a minor portion (9.0±2.1 per cent) of the peculiar velocity of the Local Group.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): Local Group - large-scale structure of Universe

CDS comments: Objects B1, B6 (T.1), B8 (text) are <[DSE2005] BN> in SIMBAD.

Simbad objects: 24

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