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HeII emitters in the VIMOS VLT Deep Survey: PopIII star formation or peculiar stellar populations in galaxies at 2<z<4.6?
P. Cassata, O. Le Fevre, S. Charlot +15
The aim of this work is to identify HeII emitters at 2<z<4.6 and to constrain the source of the hard ionizing continuum that powers the HeII emission. We have assembled a sample of…
Dynamical masses of early-type galaxies at z~2
Michele Cappellari
The evolution of masses and sizes of passive (early-type) galaxies with redshift provides ideal constraints to galaxy formation models. These parameters can in principle be obtaine…
GMASS ultradeep spectroscopy of galaxies at z~2 - VII. Sample selection and spectroscopy
Jaron Kurk, Andrea Cimatti, Emanuele Daddi +12
The populations of both quiescent and actively star-forming galaxies at 1<z<2 are still under-represented in our spectroscopic census of galaxies throughout the history of the Univ…
Environmental effects in the interaction and merging of galaxies in zCOSMOS survey
P. Kampczyk, S. J. Lilly, the zCOSMOS Collaboration
The zCOSMOS-bright 10k spectroscopic sample reveals a strong environmental dependence of close kinematic galaxy pair fractions in the redshift range 0.2 < z < 1. The fraction of cl…
Fast evolving size of early-type galaxies at z>2 and the role of dissipationless (dry) merging
A. Cimatti, C. Nipoti, P. Cassata
We present the analysis of a large sample of early-type galaxies (ETGs) at 0<z<3 aimed at tracing the cosmic evolution of their size and compare it with a model of pure dissipation…