Zobrazeno 1 - 10
of 197
pro vyhledávání: '"Saslaw, William C."'
Publikováno v:
The Astrophysical Journal 890 (2020) 160
We examine the counts-in-cells probability distribution functions that describe dark matter halos in the Dark Energy Universe Simulations (DEUS). We describe the measurements between redshifts $z=0$ to $z=4$ on both linear and non-linear scales. The
Externí odkaz:
http://arxiv.org/abs/2001.06119
Autor:
Yang, Abel, Saslaw, William C.
We identify low redshift clusters and groups in the Sloan Digital Sky Survey (SDSS) and estimate their kinetic and correlation potential energies. We compare the distribution of these energies to the predictions by Yang and Saslaw (2012) and in the p
Externí odkaz:
http://arxiv.org/abs/1203.3823
Autor:
Yang, Abel, Saslaw, William C.
We develop a general theory for estimating the probability that a galaxy cluster of a given shape exists. The theory is based on the observed result that the distribution of galaxies is very close to quasi-equilibrium, in both its linear and nonlinea
Externí odkaz:
http://arxiv.org/abs/1107.4084
We examine the evolution of the spatial counts-in-cells distribution of galaxies and show that the form of the galaxy distribution function does not change significantly as galaxies merge and evolve. In particular, bound merging pairs follow a simila
Externí odkaz:
http://arxiv.org/abs/1011.0176
Autor:
Yang, Abel, Saslaw, William C.
Publikováno v:
Astrophysical Journal (2011) 729 123
We determine the galaxy counts-in-cells distribution from the Sloan Digital Sky Survey (SDSS) for 3D spherical cells in redshift space as well as for 2D projected cells. We find that cosmic variance in the SDSS causes the counts-in-cells distribution
Externí odkaz:
http://arxiv.org/abs/1009.0013
Publikováno v:
Astrophys.J.695:1121-1126,2009
This is the first exploration of the galaxy distribution function at redshifts greater than about 0.1. Redshifts are based on the North and South GOODS Catalogs. In each catalog we examine clustering in the two redshift bands 0.47 < z < 0.8 and 0.9 <
Externí odkaz:
http://arxiv.org/abs/0902.1103
Publikováno v:
Astrophys.J. 626 (2005) 795-808
We determine the spatial distribution function of galaxies from a wide range of samples in the 2MASS survey. The results agree very well with the form of the distribution predicted by the theory of cosmological gravitational many-body galaxy clusteri
Externí odkaz:
http://arxiv.org/abs/astro-ph/0503509
Publikováno v:
Astrophys.J. 461 (1996) 514
We give the first determination of the observed peculiar velocity distribution function for a representative sample of galaxies (within 50 Mpc (H=100) of the Local Group), which includes a wide range of clustering properties. We explore in detail the
Externí odkaz:
http://arxiv.org/abs/astro-ph/9602001