Spatially resolved spectroscopy of Coma cluster early-type galaxies. I. The database
Abstract
We present long slit spectra for a magnitude limited sample of 35 E and S0 galaxies of the Coma cluster. The high quality of the data allowed us to derive spatially resolved spectra for a substantial sample of Coma galaxies for the first time. From these spectra we obtained rotation curves, the velocity dispersion profiles and the H_3 and H_4 coefficients of the Hermite decomposition of the line of sight velocity distribution. Moreover, we derive the radial line index profiles of Mg, Fe and Hβ line indices out to R~ 1 r_e - 3 r_e with high signal-to-noise ratio. We describe the galaxy sample, the observations and data reduction, and present the spectroscopic database. Ground-based photometry for a subsample of 8 galaxies is also presented. The Coma cluster is one of the richest known clusters of galaxies, spanning about 4 decades in density. Hence it is the ideal place to study the structure of galaxies as a function of environmental density in order to constrain the theories of galaxy formation and evolution. Based on the spectroscopic database presented, we will discuss these issues in a series of future papers. Tables 1 and 4 are also available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html Tables 5 to 82 are only available in electronic form at CDS.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- February 2000
- DOI:
- 10.1051/aas:2000322
- Bibcode:
- 2000A&AS..141..449M
- Keywords:
-
- GALAXIES: ELLIPTICAL AND LENTICULAR;
- CD;
- KINEMATICS AND DYNAMICS;
- STELLAR CONTENT;
- ABUNDANCES;
- FORMATION