11 papers · 1 filter
The Kormendy relation of massive elliptical galaxies at z~1.5. Evidence for size evolution ?
M. Longhetti, P. Saracco, P. Severgnini +6
We present the morphological analysis based on HST-NIC2 (0.075 arcsec/pixel) images in the F160W filter of a sample of 9 massive field (> 10^{11} M_\odot) galaxies spectroscopicall…
An X-ray bright ERO hosting a type 2 QSO
P. Severgnini, A. Caccianiga, V. Braito +8
We present the XMM-Newton and the optical-VLT spectra along with the optical and the near-infrared photometric data of one of the brightest X-ray (F(2-10 keV)~1e-13 erg/s cm^2) ext…
Probing the evolution of the near-IR luminosity function of galaxies to z ~ 3 in the Hubble Deep Field South
P. Saracco, A. Fiano, G. Chincarini +6
[Abridged] We present the rest-frame Js-band and Ks-band luminosity function of a sample of about 300 galaxies selected in the HDF-S at Ks<23 (Vega). We use calibrated photometric…
Dating the stellar population in massive early-type galaxies at 1.5
M. Longhetti, P. Saracco, P. Severgnini +7
We present the analysis of 10 massive early-type galaxies at . They have been identified by means of a near-IR low resolution spectroscopic follow-up of a complete sample…
The TESIS project: Are type 2 QSO hidden in X-ray emitting EROs?
P. Severgnini, R. Della Ceca, V. Braito +8
Here we present the results obtained from the analysis of 75 ksec of XMM-Newton observations of a sample of EROs selected from one MUNICS field (K'<19.5 mag). We find 6 EROs with a…
High-z massive galaxies in the HDF-South
P. Saracco, M. Longhetti, E. Giallongo +6
[abr] We report the analysis of three galaxies selected in the Hubble Deep Field South at Ks<22 on the basis of their unusually red near-IR color J-K>3. We have used population syn…