The Luminosity Function of 24 Abell Clusters from the CRoNaRio catalogues

Details The Luminosity Function of 24 Abell Clusters from the CRoNaRio catalogues The Luminosity Function of 24 Abell Clusters from the CRoNaRio catalogues

1999-09-22

arxiv.org/abs/astro-ph/9909366v1

Astronomy and Astrophysics

Astrophysics

in the proceeding of the XLIII SAIt national conference Mem. Soc. Astr. It., in press

Scientific paper

We present the composite luminosity function of galaxies for 24 Abell clusters studied in our survey of the Northern Hemisphere, using DPOSS data in the framework of the CRoNaRio collaboration. Our determination of the luminosity function has been computed with very high accuracy thanks to 1) the use of homogeneous data both in the cluster and in the control field, 2) a local estimate of the background, which takes into account the presence of large-scale structures (which tipically make the background contribution larger) and of foreground clusters and groups; 3) the inclusion in the error calculation of the variance of background counts, which is tipically larger than Poissonian fluctuation. We plan at least a tenfold increase of the number of clusters.

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