Context. The fundamental plane links the structural properties of
early-type galaxies such as its surface brightness and effective radius
with its dynamics. The study of the fundamental plane evolution
therefore has important implications for models of galaxy formation and
evolution. <BR /> Aims: This work aims to identify signs of evolution of
early-type galaxies through the study of parameter correlations such as
the fundamental plane, the Kormendy, and the Faber-Jackson relations,
using a sample of 135 field galaxies extracted from the Extended Groth
Strip in the redshift range 0.2…
Emission-line galaxies are important targets for understanding the
chemical evolution of galaxies in the universe. Deep, narrowband imaging
surveys allow detection and study of the flux and the equivalent widths
(EWs) of the emission line studied. The present work has been developed
within the context of the OTELO project, an emission-line survey using
the tunable filters (TF) of OSIRIS, the first-generation instrument on
the Gran Telescopio Canarias (GTC) 10.4 m telescope located in La Palma,
Spain, that will observe through selected atmospheric windows that are
relatively free of sky…
We present the online and the offline data reduction system for OSIRIS,
the optical multi-mode instrument for GranTeCan. The software is written
in Python and invokes PyRAF tasks which have been optimized for the
instrument. We review the characteristics of the instrument and of the
software. We will also present the improvements which are foreseen for
both the instrument and the software. The flexibility of the software
makes it easy to be adapted to other telescopes/instruments.
