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A proto-cluster at z=2.45
C. Diener, S. Lilly, C. Ledoux +6
We present the spectroscopic confirmation of a proto-cluster. Its member galaxies lie within a radius of 1.4Mpc (physical) on the sky and within km/s along the…
Spot the difference. Impact of different selection criteria on observed properties of passive galaxies in zCOSMOS 20-k sample
M. Moresco, L. Pozzetti, A. Cimatti +50
We present the analysis of photometric, spectroscopic, and morphological properties for differently selected samples of passive galaxies up to z=1 extracted from the zCOSMOS-20k sp…
Proto-groups at 1.8<z<3 in the zCOSMOS-deep sample
C. Diener, S. J. Lilly, C. Knobel +48
We identify 42 candidate groups lying between 1.8<z<3.0 from a sample of 3502 galaxies with spectroscopic redshifts in the zCOSMOS-deep redshift survey within the same redshift int…
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…
Quest for COSMOS submillimeter galaxy counterparts using CARMA and VLA: Identifying three high-redshift starburst galaxies
V. Smolcic, F. Navarrete, M. Aravena +16
We report on interferometric observations at 1.3 mm at 2"-3" resolution using the Combined Array for Research in Millimeter-wave Astronomy (CARMA). We identify multi-wavelength cou…
Improved constraints on the expansion rate of the Universe up to z~1.1 from the spectroscopic evolution of cosmic chronometers
M. Moresco, A. Cimatti, Raul Jimenez +65
We present new improved constraints on the Hubble parameter H(z) in the redshift range 0.15 < z < 1.1, obtained from the differential spectroscopic evolution of early-type galaxies…
Environmental effects in the interaction and merging of galaxies in zCOSMOS
P. Kampczyk, S. J. Lilly, L. de Ravel +56
(Abridged) We analyze the environments and galactic properties (morphologies and star-formation histories) of a sample of 153 close kinematic pairs in the redshift range 0.2 < z <…
The radial and azimuthal profiles of Mg II absorption around 0.5 < z < 0.9 zCOSMOS galaxies of different colors, masses and environments
R. Bordoloi, S. J. Lilly, C. Knobel +50
We map the radial and azimuthal distribution of Mg II gas within 200 kpc (physical) of 4000 galaxies at redshifts 0.5 < z < 0.9 using co-added spectra of more than 5000 background…