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.
Physical parameters for 135 early-type galaxies in the Extended Groth
Strip (EGS). For each galaxy equatorial coordinates, total magnitudes in
B and g-bands, redshift, velocity dispersion, effective radius, surface
brightness, stellar mass, Sersic index, type (elliptical or lenticular)
and signal-to-noise of the spectrum are given.
