The Vimos-VLT Deep Survey is a spectroscopic survey aiming at collecting more than 50000 spectra down to a limiting magnitude IAB=24, and 100000 down to IAB=22.5, on a total of about 16 deg2 without any color or morphology preselection. We present the N(z) distribution up to z~ 5, obtained from a purely magnitude-limited sample down to IAB=24, which is an important input to weak-lensing studies. We discuss the evolution of the galaxy luminosity function up to z~ 2, which exhibits a very strong increase in the typical galaxy luminosity Delta M*≃ -2.5 in the U band compared to the local value. Surveys like the VVDS also allow to study the galaxy bias as a function of redshift without assumption about its linearity, an assumption that we find to be violated in some cases. A low bias is found, and the linear bias is shown to increase with redshift.
Paltani S., Ilbert O., Le Fèvre O., Marinoni C., Bottini D., Garilli B., et al. (2005). The Vimos-VLT Deep Survey: Results from the First-Epoch Observations. CAMBRIDGE : Cambridge University Press, 2005.,.
The Vimos-VLT Deep Survey: Results from the First-Epoch Observations
MARANO, BRUNO;BONGIORNO, ANGELA;GREGORINI, LORETTA;
2005
Abstract
The Vimos-VLT Deep Survey is a spectroscopic survey aiming at collecting more than 50000 spectra down to a limiting magnitude IAB=24, and 100000 down to IAB=22.5, on a total of about 16 deg2 without any color or morphology preselection. We present the N(z) distribution up to z~ 5, obtained from a purely magnitude-limited sample down to IAB=24, which is an important input to weak-lensing studies. We discuss the evolution of the galaxy luminosity function up to z~ 2, which exhibits a very strong increase in the typical galaxy luminosity Delta M*≃ -2.5 in the U band compared to the local value. Surveys like the VVDS also allow to study the galaxy bias as a function of redshift without assumption about its linearity, an assumption that we find to be violated in some cases. A low bias is found, and the linear bias is shown to increase with redshift.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
