NED Abstract 
Copyright by American Astronomical Society.
Reproduced by permission

2003AJ....126.2268W

Redshift-Distance Survey of Early-Type Galaxies: Spectroscopic Data 

G. Wegner, M. Bernardi, C. N. A. Willmer, L. N. da Costa, M. V. Alonso, P.
S. Pellegrini, M. A. G. Maia, O. L. Chaves, and C. Rite 

Abstract. We present central velocity dispersions and Mg_2_ line indices
for an all-sky sample of ~1178 elliptical and S0 galaxies, of which 984 had
no previous measures. This sample contains the largest set of homogeneous
spectroscopic data for a uniform sample of elliptical galaxies in the
nearby universe. These galaxies were observed as part of the ENEAR project,
designed to study the peculiar motions and internal properties of the local
early-type galaxies. Using 523 repeated observations of 317 galaxies
obtained during different runs, the data are brought to a common zero
point. These multiple observations, taken during the many runs and
different instrumental setups employed for this project, are used to derive
statistical corrections to the data and are found to be relatively small,
typically <~5% of the velocity dispersion and 0.01 mag in the Mg_2_ line
strength. Typical errors are about 8% in velocity dispersion and 0.01 mag
in Mg_2_, in good agreement with values published elsewhere. 

Keywords: Galaxies: Distances and Redshifts, Galaxies: Elliptical and
Lenticular, cD, Galaxies: General, Cosmology: Large-Scale Structure of
Universe, Surveys, Techniques: Spectroscopic