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The red sequence at birth in the galaxy cluster ClJ1449+0856 at z=2
V. Strazzullo, E. Daddi, R. Gobat +10
We use HST/WFC3 imaging to study the red population in the IR-selected, X-ray detected, low-mass cluster Cl J1449+0856 at z=2, one of the few bona-fide established clusters discove…
The HDUV Survey: Six Lyman Continuum Emitter Candidates at z~2 Revealed by HST UV Imaging
R. P. Naidu, P. A. Oesch, N. Reddy +14
We present six galaxies at z~2 that show evidence of Lyman continuum (LyC) emission based on the newly acquired UV imaging of the Hubble Deep UV legacy survey (HDUV) conducted with…
Minor Mergers or Progenitor Bias? The Stellar Ages of Small and Large Quenched Early-Type Galaxies
Martina Fagioli, C. Marcella Carollo, Alvio Renzini +3
We investigate the origin of the evolution of the population-averaged size of quenched galaxies (QGs) through a spectroscopic analysis of their stellar ages. The two most favoured…
Satellite Quenching, Galaxy Inner Density and the Halo Environment
J. Woo, C. M. Carollo, S. M. Faber +2
Using the Sloan Digital Sky Survey, we adopt the sSFR- diagram as a diagnostic tool to understand quenching in different environments. sSFR is the specific star formation…
Ubiquitous giant Ly nebulae around the brightest quasars at revealed with MUSE
Elena Borisova, Sebastiano Cantalupo, Simon J. Lilly +17
Direct Ly imaging of intergalactic gas at has recently revealed giant cosmological structures around quasars, e.g. the Slug Nebula (Cantalupo et al. 2014). Despite the…
Surface density effects in quenching: cause or effect?
Simon J. Lilly, C. Marcella Carollo
There are very strong observed correlations between the specific star-formation rates (sSFR) of galaxies and their mean surface mass densities, Σ, as well as other aspects of their…