We discuss the evolution of clustering of galaxies in the Universe from the present epoch back to z similar to 2, using the first-epoch data from the VIMOS-VLT Deep Survey (VVDS). We present the evolution of the projected two-point correlation function of galaxies for the global galaxy population, as well as its dependence on galaxy intrinsic luminosities and spectral types. While we do not find strong variations of the correlation function parameters with redshift for the global galaxy population, the clustering of objects with different intrinsic luminosities evolved significantly during last 8-10 billion years. Our findings indicate that bright galaxies in the past traced higher density peaks than they do now and that the shape of the correlation function of most luminous galaxies is different from observed for their local counterparts, which is a supporting evidence of a non-trivial evolution of the galaxy vs. dark matter bias.
The VIRMOS-VLT Deep Survey: the Last 10 Billion Years of Evolution of Galaxy Clustering / A. Pollo;L. Guzzo;O. Le Fevre;B. Meneux;A. Cappi;H. J. McCracken;A. Iovino;C. Marinoni;D. Bottini;B. Garilli;V. L. Le;D. Maccagni;J. P. Picat;R. Scaramella;M. Scodeggio;L. Tresse;G. Vettolani;A. Zanichelli;C. Adami;S. Arnouts;S. Bardelli;M. Bolzonella;S. Charlot;P. Ciliegi;T. Contini;S. Foucaud;P. Franzetti;I. Gavignaud;O. Ilbert;B. Marano;A. Mazure;R. Merighi;S. Paltani;R. Pello;L. Pozzetti;M. Radovich;G. Zamorani;E. Zucca;M. Bondi;A. Bongiorno;J. Brinchmann;O. Cucciati;S. . la;F. Lamareille;Y. Mellier;P. Merluzzi;S. Temporin;D. Vergani;C. J. Walcher. - STAMPA. - 380:(2007), pp. 533-536. (Intervento presentato al convegno Meeting on At the Edge of the Universe tenutosi a Sintra, PORTUGAL nel OCT 09-13, 2006).
The VIRMOS-VLT Deep Survey: the Last 10 Billion Years of Evolution of Galaxy Clustering
CUCCIATI, OLGA;
2007
Abstract
We discuss the evolution of clustering of galaxies in the Universe from the present epoch back to z similar to 2, using the first-epoch data from the VIMOS-VLT Deep Survey (VVDS). We present the evolution of the projected two-point correlation function of galaxies for the global galaxy population, as well as its dependence on galaxy intrinsic luminosities and spectral types. While we do not find strong variations of the correlation function parameters with redshift for the global galaxy population, the clustering of objects with different intrinsic luminosities evolved significantly during last 8-10 billion years. Our findings indicate that bright galaxies in the past traced higher density peaks than they do now and that the shape of the correlation function of most luminous galaxies is different from observed for their local counterparts, which is a supporting evidence of a non-trivial evolution of the galaxy vs. dark matter bias.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
