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Date and Time of the Query: 2018-12-13 T10:29:33 PST
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For refcode 2003AJ....126.2268W:
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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
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