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Star formation histories of early-type galaxies at z = 1.2 in cluster and field environments
R. Gobat, P. Rosati, V. Strazzullo +3
We derive the star formation histories of early-type galaxies at z = 1.2 in both low and high density environments. To this purpose, we compare the co-added spectroscopic and 8-9 b…
The Red Sequence of High-Redshift Clusters: a Comparison with Cosmological Galaxy Formation Models
N. Menci, P. Rosati, R. Gobat +4
We compare the results from a semi-analytic model of galaxy formation with spectro-photometric observations of distant galaxy clusters observed in the range 0.8< z< 1.3. We investi…
Formation epochs, star formation histories and sizes of massive early-type galaxies in cluster and field environments at z=1.2: insights from the rest-frame UV
A. Rettura, P. Rosati, M. Nonino +7
We derive stellar masses, ages and star formation histories of massive early-type galaxies in the z=1.237 RDCS1252.9-2927 cluster and compare them with those measured in a similarl…
A twelve-image gravitational lens system in the z ~ 0.84 cluster Cl J0152.7-1357
C. Grillo, M. Lombardi, P. Rosati +6
Gravitational lens modeling is presented for the first discovered example of a three-component source for which each component is quadruply imaged. The lens is a massive galaxy mem…
Stellar mass estimates in early-type galaxies from lensing+dynamical and photometric measurements
C. Grillo, R. Gobat, P. Rosati +1
In this paper we compare two different diagnostics for estimating stellar masses in early-type galaxies and we establish their level of reliability. In particular, we consider the…
VLT and ACS observations of RDCS J1252.9-2927: dynamical structure and galaxy populations in a massive cluster at z=1.237
R. Demarco, P. Rosati, C. Lidman +26
We present results from an extensive spectroscopic survey, carried out with VLT FORS, and from an extensive multiwavelength imaging data set from the HST Advanced Camera for Survey…