Presents the statistical properties of large scale galaxy distribution in the LEDA redshift database. This catalog contains more than 40000 redshifts over all the sky. The authors find that LEDA, although seriously affected by incompleteness, shows quite stable statistical properties. In particular, the authors have considered the behavior of the two point correlation function and of the power spectrum of the density fluctuations, and have done several tests to check whether the incompleteness of the catalog affect these statistical quantities. The conclusion is that galaxy distribution in this catalog has fractal properties up to the distance ?200 h-1Mpc with D = 2.1±0.2, with no sign towards homogeneity: this result is statistically stable. Finally, the authors compare these results with those obtained in other redshift surveys, finding that this sample reproduces well the properties of galaxy distributions found in the different catalogs.
Statistical properties of the LEDA redshift database.
Montuori M;
1997
Abstract
Presents the statistical properties of large scale galaxy distribution in the LEDA redshift database. This catalog contains more than 40000 redshifts over all the sky. The authors find that LEDA, although seriously affected by incompleteness, shows quite stable statistical properties. In particular, the authors have considered the behavior of the two point correlation function and of the power spectrum of the density fluctuations, and have done several tests to check whether the incompleteness of the catalog affect these statistical quantities. The conclusion is that galaxy distribution in this catalog has fractal properties up to the distance ?200 h-1Mpc with D = 2.1±0.2, with no sign towards homogeneity: this result is statistically stable. Finally, the authors compare these results with those obtained in other redshift surveys, finding that this sample reproduces well the properties of galaxy distributions found in the different catalogs.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.


