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Physical properties of galaxies and their evolution in the VIMOS VLT Deep Survey. II. Extending the mass-metallicity relation to the range z=0.89-1.24
E. Perez-Montero, T. Contini, F. Lamareille +39
Aims. We present a continuation of our study about the relation between stellar mass and gas-phase metallicity in the VIMOS VLT Deep Survey (VVDS). In this work we extend the deter…
Eddington ratios of faint AGN at intermediate redshift: Evidence for a population of half-starved black holes
I. Gavignaud, L. Wisotzki, A. Bongiorno +51
We use one of the deepest spectroscopic samples of broad line active galactic nuclei (AGN) currently available, extracted from the VIMOS VLT Deep Survey (VVDS), to compute MgII and…
COSMOS Photometric Redshifts with 30-bands for 2-deg2
O. Ilbert, P. Capak, M. Salvato +60
We present accurate photometric redshifts in the 2-deg2 COSMOS field. The redshifts are computed with 30 broad, intermediate, and narrow bands covering the UV (GALEX), Visible-NIR…
The dust un-biased cosmic star formation history from the 20 cm VLA-COSMOS survey
V. Smolcic, E. Schinnerer, G. Zamorani +8
We derive the cosmic star formation history (CSFH) out to z=1.3 using a sample of ~350 radio-selected star-forming galaxies, a far larger sample than in previous, similar studies.…
The VVDS-SWIRE-GALEX-CFHTLS surveys: Physical properties of galaxies at z below 1.2 from photometric data
C. J. Walcher, F. Lamareille, D. Vergani +42
We intend to show that it is possible to derive the physical parameters of galaxies from their broad-band spectral energy distribution out to a redshift of 1.2. This method has the…
GMASS Ultradeep Spectroscopy of Galaxies at redshift z~2. I. The stellar metallicity
C. Halliday, E. Daddi, A. Cimatti +12
Context: Galaxy metallicities have been measured to redshift z~2 by gas-phase oxygen abundances of the interstellar medium using the R23 and N2 methods. Galaxy stellar metallicitie…
Clustering properties of a type-selected volume-limited sample of galaxies in the CFHTLS
H. J. McCracken, O. Ilbert, Y. Mellier +5
(abridged) We present an investigation of the clustering of i'AB<24.5 galaxies in the redshift interval 0.2<z<1.2. Using 100,000 precise photometric redshifts in the four ultra-dee…
The obscured X-ray source population in the HELLAS2XMM survey: the Spitzer view
C. Vignali, Francesca Pozzi, A. Comastri +9
Recent X-ray surveys have provided a large number of high-luminosity, obscured Active Galactic Nuclei (AGN), the so-called Type 2 quasars. Despite the large amount of multi-wavelen…
The XMM-Newton wide-field survey in the COSMOS field: V. Angular Clustering of the X-ray Point Sources
Takamitsu Miyaji, Giovanni Zamorani, Nico Cappelluti +9
We present the first results of the measurements of angular auto-correlation functions (ACFs) of X-ray point sources detected in the XMM-Newton observations of the 2 deg2 COSMOS fi…
zCOSMOS: A Large VLT/VIMOS redshift survey covering 0 < z < 3 in the COSMOS field
S. J. Lilly, O. Le Fevre, A. Renzini +42
zCOSMOS is a large redshift survey that is being undertaken in the COSMOS field using 600 hours of observation with the VIMOS spectrograph on the 8-m VLT. The survey is designed to…
The Zurich Extragalactic Bayesian Redshift Analyzer (ZEBRA) and its first application: COSMOS
R. Feldmann, C. M. Carollo, C. Porciani +21
We present ZEBRA, the Zurich Extragalactic Bayesian Redshift Analyzer. The current version of ZEBRA combines and extends several of the classical approaches to produce accurate pho…
The VIRMOS deep imaging survey IV: Near-infrared observations
A. Iovino, H. J. McCracken, B. Garilli +49
In this paper we present a new deep, wide-field near-infrared imaging survey. Our J- and K-band observations in four separate fields complement optical BVRI, ultraviolet and spectr…
The evolution of early-type galaxies at z~1 from the K20 survey
S. di Serego Alighieri, J. Vernet, A. Cimatti +10
We have performed VLT spectroscopy of an almost complete sample of 18 early-type galaxies with 0.88 < z < 1.3 plus two at z=0.67, selected from the K20 survey, and derived the velo…
The K20 survey. VI. The Distribution of the Stellar Masses in Galaxies up to z~2
A. Fontana, L. Pozzetti, I. Donnarumma +14
We present a detailed analysis of the stellar mass content of galaxies up to z=2.5 in the K20 galaxy sample, that has a 92% spectroscopic completeness and a complete m…
Metal enrichment in near-IR luminous galaxies at z~2: signatures of proto-ellipticals?
Duilia de Mello, E. Daddi, A. Renzini +4
We present the analysis of the coadded rest-frame UV spectrum (1200<z<2000 A) of five K-luminous galaxies at z~2 from the K20 survey. The composite spectrum is characterized by str…
Near-IR bright galaxies at z~2. Entering the spheroid formation epoch ?
E. Daddi, A. Cimatti, A. Renzini +11
Spectroscopic redshifts have been measured for 9 K-band luminous galaxies at 1.7 < z < 2.3, selected with Ks < 20 in the "K20 survey" region of the Great Observatories Origins Deep…
The evolution of the galaxy luminosity function in the rest frame blue band up to z=3.5
F. Poli, E. Giallongo, A. Fontana +14
We present an estimate of the cosmological evolution of the field galaxy luminosity function (LF) in the rest frame 4400 Angstrom B -band up to redshift z=3.5. To this purpose, we…
New Clues on the Nature of Extremely Red Galaxies
A. Cimatti, E. Daddi, S. di Serego Alighieri +7
We present near-infrared VLT-UT1+ISAAC spectroscopy of a sample of 9 extremely red galaxies (ERGs) with R-K>5 and K<19.0. Neither strong emission lines (F_lim<1-5 10^{-16} erg s^{-…
The Luminosity Function and Mean Galaxy Density from the ESP galaxy Redshift Survey
E. Zucca, G. Zamorani, P. Vettolani
We summarise the main results obtained over the last two years by the ESO Slice Project (ESP) redshift survey, concerning the luminosity function and mean density of galaxies, and…
The X-Ray Background: Observations
Giovanni Zamorani
Invited review talk given at the Meeting on "Extragalactic Background Radiation: A meeting in honor of Riccardo Giacconi" Baltimore, May 18-20, 1993 Ro be published by Cambridge Un…