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The manifold spectra and morphologies of EROs
A. Cimatti, E. Daddi, P. Cassata +13
Deep VLT optical spectroscopy, HST+ACS (GOODS) imaging and VLA observations are used to unveil the nature of a complete sample of 47 EROs with R-Ks>5 and Ks<20. The spectroscopic r…
The HELLAS2XMM 1dF survey: on the nature of high X-ray to optical flux ratio sources
F. Fiore, M. Brusa, F. Cocchia +12
We present results from the photometric and spectroscopic identification of 122 X-ray sources discovered by XMM-Newton in the 2-10 keV band (the HELLAS2XMM 1dF sample). One of the…
Photometric Redshifts for Galaxies in the GOODS Southern Field
B. Mobasher, R. Idzi, N. Benitez +28
We use extensive multi-wavelength photometric data from the Great Observatories Origins Deep Survey (GOODS) to estimate photometric redshifts for a sample of 434 galaxies with spec…
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 Hellas2XMM survey: III. Multiwavelength observations of hard X-ray selected sources in the PKS 0312-77 field
M. Brusa, A. Comastri, M. Mignoli +11
We present extensive optical, radio and infrared follow-up observations of a sample of 35 hard X-ray (2-10 keV) selected sources discovered serendipitously in the PV XMM-Newton obs…
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…
The HELLAS2XMM survey: IV. Optical identifications and the evolution of the accretion luminosity in the Universe
F. Fiore, M. Brusa, F. Cocchia +12
We present results from the photometric and spectroscopic identification of 122 X-ray sources recently discovered by XMM-Newton in the 2-10 keV band (the HELLAS2XMM 1dF sample). Th…
On the nature of the ISO-selected sources in the ELAIS S2 region
F. Pozzi, P. Ciliegi, C. Gruppioni +7
We have studied the optical, near-IR and radio properties of a complete sample of 43 sources detected at 15-micron in one of the deeper ELAIS repeatedly observed region. The extrag…
Tracing the large scale structure in the Chandra Deep Field South
R. Gilli, A. Cimatti, E. Daddi +16
We report the discovery of large scale structures of X-ray sources in the 1Msec observation of the Chandra Deep Field South. Two main structures appear as narrow (Delta_z < 0.02) s…
The K20 survey. V The evolution of the near-IR Luminosity Function
L. Pozzetti, A. Cimatti, G. Zamorani +12
We present the galaxy rest-frame near-IR Luminosity Function (LF) and its cosmic evolution to z=1.5 based on a spectroscopic survey of a magnitude limited sample of galaxies with K…