Volume 61, Number 6, March 2003
|Page(s)||856 - 862|
|Section||Geophysics, astronomy, and astrophysics|
|Published online||01 March 2003|
Luminosity segregation vs. fractal scaling in the galaxy distribution
Sektion Physik, Ludwig-Maximilians-Universität Theresienstraße 37, D-80333 München, Germany
Accepted: 17 January 2003
In this letter I present results from a correlation analysis of three galaxy redshift catalogs: the SSRS2, the CfA2 and the PSCz. I will focus on the observation that the amplitude of the two-point correlation function rises if the depth of the sample is increased. There are two competing explanations for this observation: one in terms of a fractal scaling, the other based on luminosity segregation. I will show that there is strong evidence that the observed growth is due to a luminosity-dependent clustering of the galaxies.
PACS: 98.65.-r – Galaxy groups, clusters, and superclusters; large scale structure of the Universe / 98.62.Ve – Statistical and correlative studies of properties (luminosity and mass functions; mass-to-light ratio; Tully-Fisher relation, etc.) / 89.75.Da – Systems obeying scaling laws
© EDP Sciences, 2003
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