4 papers · 1 filter
The role of mergers and rejuvenation in the buildup of the quiescent population at cosmic noon
Jimi Evan Harrold, Omar Almaini, Frazer R. Pearce +6
We investigate the quenching of galaxies using a mock observational lightcone generated from the Semi-Analytic Model (SAM) L-Galaxies, closely matched to observations from the UKID…
No evidence for excess AGN activity in recently quenched massive galaxies at cosmic noon
Omar Almaini, Vivienne Wild, David Maltby +8
We present an analysis of AGN activity within recently quenched massive galaxies at cosmic noon (), using deep Chandra X-ray observations of the Ultra-Deep Survey (UDS) fi…
High-velocity outflows persist up to 1 Gyr after a starburst in recently-quenched galaxies at z > 1
Elizabeth Taylor, David Maltby, Omar Almaini +4
High-velocity outflows are ubiquitous in star-forming galaxies at cosmic noon, but are not as common in passive galaxies at the same epoch. Using optical spectra of galaxies select…
Correcting for the overabundance of low-mass quiescent galaxies in semi-analytic models
Jimi E. Harrold, Omar Almaini, Frazer R. Pearce +1
We compare the L-Galaxies semi-analytic model to deep observational data from the UKIDSS Ultra Deep Survey (UDS) across the redshift range . We find that the over-abun…