126 citations · 239 across the 4 of their papers we have counts for
4 papers
A detailed study of the optical attenuation of gamma-ray bursts in the Swift era
O. M. Littlejohns, N. R. Butler, A. Cucchiara +16
We present optical and near-infrared (NIR) photometry of 28 gamma-ray bursts (GRBs) detected by the \textit{Swift} satellite and rapidly observed by the Reionization and Transients…
Nuclear Activity In Isolated Galaxies
Francisco Hernandez-Ibarra, Deborah Dultzin, Yair Krongold +3
We present a spectroscopic study of the incidence of AGN nuclear activity in two samples of isolated galaxies (Karachentseva, V.E. & Varela, J.). Our results show that the incidenc…
Stellar populations of early-type galaxies in different environments I. Line-strength indices
P. Sanchez-Blazquez, J. Gorgas, N. Cardiel +1
Aims: This paper commences a series devoted to the study of the stellar content of early-type galaxies. The goal of the series is to set constraints on the evolutionary status of t…
Empirical calibration of the λ4000 Åbreak
Javier Gorgas, Nicolas Cardiel, Santos Pedraz +1
Empirical fitting functions, describing the behaviour of the λ4000 Åbreak, D_4000, in terms of effective temperature, metallicity and surface gravity, are presented. For this purpo…