Context: The VIMOS VLT Deep Survey (VVDS) was undertaken to map the evolution of galaxies large scale structures and active galaxy nuclei from the redshift spectroscopic measurements of ~105 objects down to an apparent magnitude IAB = 24 in combination with a multi-wavelength acquisition for radio infrared optical ultraviolet and X-rays data. Aims: We present the evolution of the comoving star formation rate (SFR) density in the redshift range 0 < z < 5 using the first epoch data release of the VVDS that is 11564 spectra over 2200 arcmin2 in two fields of view the VVDS-0226-04 and the VVDS-CDFS-0332-27 and the cosmological parameters (Ω_M ΩΛ h)=(0.3 0.7 0.7). Methods: We study the multi-wavelength non dust-corrected luminosity densities at 0 < z < 2 from the rest-frame far ultraviolet to the optical passbands and the rest-frame 1500 Å luminosity functions and densities at 2.7 < z < 5. Results: They evolve from z=1.2 to z=0.05 according to (1+z)x with x = 2.05 1.94 1.92 1.14 0.73 0.42 and 0.30 in the FUV-1500 NUV-2800 U-3600 B-4400 V-5500 R-6500 and I-7900 passbands respectively. From z=1.2 to z=0.2 the B-band density for the irregular-like galaxies decreases markedly by a factor 3.5 while it increases by a factor 1.7 for the elliptical-like galaxies. We identify several SFR periods; from z=5 to 3.4 the FUV-band density increases by at most 0.5 dex from z=3.4 to 1.2 it decreases by 0.08 dex from z=1.2 to z=0.05 it declines steadily by 0.6 dex. For the most luminous MAB(1500 Å)
The cosmic star formation rate evolution from z = 5 to z = 0 from the VIMOS VLT deep survey
MARANO, BRUNO;BONGIORNO, ANGELA;CUCCIATI, OLGA;
2007
Abstract
Context: The VIMOS VLT Deep Survey (VVDS) was undertaken to map the evolution of galaxies large scale structures and active galaxy nuclei from the redshift spectroscopic measurements of ~105 objects down to an apparent magnitude IAB = 24 in combination with a multi-wavelength acquisition for radio infrared optical ultraviolet and X-rays data. Aims: We present the evolution of the comoving star formation rate (SFR) density in the redshift range 0 < z < 5 using the first epoch data release of the VVDS that is 11564 spectra over 2200 arcmin2 in two fields of view the VVDS-0226-04 and the VVDS-CDFS-0332-27 and the cosmological parameters (Ω_M ΩΛ h)=(0.3 0.7 0.7). Methods: We study the multi-wavelength non dust-corrected luminosity densities at 0 < z < 2 from the rest-frame far ultraviolet to the optical passbands and the rest-frame 1500 Å luminosity functions and densities at 2.7 < z < 5. Results: They evolve from z=1.2 to z=0.05 according to (1+z)x with x = 2.05 1.94 1.92 1.14 0.73 0.42 and 0.30 in the FUV-1500 NUV-2800 U-3600 B-4400 V-5500 R-6500 and I-7900 passbands respectively. From z=1.2 to z=0.2 the B-band density for the irregular-like galaxies decreases markedly by a factor 3.5 while it increases by a factor 1.7 for the elliptical-like galaxies. We identify several SFR periods; from z=5 to 3.4 the FUV-band density increases by at most 0.5 dex from z=3.4 to 1.2 it decreases by 0.08 dex from z=1.2 to z=0.05 it declines steadily by 0.6 dex. For the most luminous MAB(1500 Å)I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
