The evolution of the clustering of QSOs
Astrophysics
2007-05-23 v1
Abstract
The evolution of QSO clustering is investigated with a new sample of 388 QSOs with 0.3<z<2.2, B<20.5 and M_B<-23. Evidence is found for an increase of the clustering amplitude with increasing redshift. These measurements allow to further distinguish among the various physical scenarios proposed to interpret the QSO phenomenon. A single population model is inconsistent with the observations. The general properties of the QSO population would arise naturally if quasars are short-lived events connected to a characteristic halo mass ~5x10^{12} M_sun.
Keywords
Cite
@article{arxiv.astro-ph/9802281,
title = {The evolution of the clustering of QSOs},
author = {F. La Franca and P. Andreani and S. Cristiani},
journal= {arXiv preprint arXiv:astro-ph/9802281},
year = {2007}
}
Comments
4 pages, 2 figures, LaTex, uses lamuphys.sty. Contributed talk at ESO/ATNF Workshop ``Looking Deep in the Southern Sky'', Sydney, Australia, 10--12 December 1997, eds. R. Morganti and W. Couch