157 citations · 558 across the 8 of their papers we have counts for
12 papers · 1 filter
Recent star formation in high-redshift early-type galaxies: insights from the rest-frame UV
S. Kaviraj, S. K. Yi, E. Gawiser +4
We combine deep UBVRIzJK photometry from the MUSYC survey with redshifts from the COMBO-17 survey to study the rest-frame ultraviolet (UV) properties of 674 high-redshift (0.5<z<1)…
The role of minor mergers in the recent star formation history of early-type galaxies
Sugata Kaviraj, Sebastien Peirani, Sadegh Khochfar +2
We demonstrate that the large scatter in the ultra-violet (UV) colours of intermediate-mass early-type galaxies in the local Universe and the inferred low-level recent star formati…
The UV colours of high-redshift early-type galaxies: evidence for recent star formation and stellar mass assembly over the last 8 billion years
S. Kaviraj, S. Khochfar, K. Schawinski +7
We combine deep UBVRIzJK photometry from the Multiwavelength Survey by Yale-Chile (MUSYC) with redshifts from the COMBO-17 survey to perform a large-scale study of the rest-frame u…
The hierarchical build-up of bulges in CDM
S. Khochfar
We investigate the hierarchical build-up of stars in bulges within the standard -cold dark matter scenario. By separating the population into stars born during starbursts that a…
The Evolving Faint-End of the Luminosity Function
S. Khochfar, J. Silk, R. A. Windhorst +1
We investigate the evolution of the faint-end slope of the luminosity function, , using semi-analytical modeling of galaxy formation. In agreement with observations, we find tha…
Adding Environmental Gas Physics to the Semi-Analytic Method for Galaxy Formation: Gravitational Heating
S. Khochfar, J. P. Ostriker
We present results of an attempt to include more detailed gas physics motivated from hydrodynamical simulations within semi-analytic models (SAM) of galaxy formation, focusing on t…