Large scale correlations in galaxy clustering from the Two degree Field Galaxy Redshift Survey

Details Large scale correlations in galaxy clustering from the Two degree Field Galaxy Redshift Survey Large scale correlations in galaxy clustering from the Two degree Field Galaxy Redshift Survey

2005-10-07

arxiv.org/abs/astro-ph/0510210v1

Astron.Astrophys.447:431-440,2006

Astronomy and Astrophysics

Astrophysics

11 pages, 14 figures. Accepted for publication in Astronomy and Astrophysics

Scientific paper

10.1051/0004-6361:20053902

We study galaxy correlations from samples extracted from the 2dFGRS final release. Statistical properties are characterized by studying the nearest neighbor probability density, the conditional density and the reduced two-point correlation function. The result is that the conditional density has a power-law behavior in redshift space described by an exponent \gamma=0.8 \pm 0.2 in the interval from about 1 Mpc/h, the average distance between nearest galaxies, up to about 40 Mpc/h, corresponding to radius of the largest sphere contained in the samples. These results are consistent with other studies of the conditional density and are useful to clarify the subtle role of finite-size effects on the determination of the two-point correlation function in redshift and real space

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