Statistical properties of the LEDA redshift database

被引:6
作者
Amendola, L
Di Nella, H
Montuori, M
Labini, FS
机构
[1] Osserv Astron Roma, I-00136 Rome, Italy
[2] Max Planck Inst Astron, D-69117 Heidelberg, Germany
[3] Univ Roma La Sapienza, Dipartimento Fis, INFM, Sez Roma 1, I-00185 Rome, Italy
关键词
D O I
10.1142/S0218348X97000516
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We present the statistical properties of large scale galaxy distribution in the LEDA redshift database. This catalog contains more than 40,000 redshifts over all the sky We find that LEDA, although seriously affected by incompleteness, shows quite stable statistical properties. In particular, we have considered the behavior of the two points correlation function and of the power spectrum of the density fluctuations, and we have done several tests to check whether the incompleteness of the catalog affect these statistical quantities. Our conclusion is that galaxy distribution in this catalog has fractal properties up to the distance similar to 200h(-1)Mpc with D = 2.1+/-0.2, with no sign towards homogeneity: this result is statistically stable. Finally, we compare these results with those obtained in other redshift surveys, finding that this sample well reproduces the properties of galaxy distribution found in the different catalogs.
引用
收藏
页码:635 / 660
页数:26
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