Astron. Astrophys. Suppl. Ser.
Volume 136, Number 3, May I 1999
|Page(s)||519 - 524|
|Published online||15 May 1999|
Central Mg2 indices for early-type galaxies *,**
CRAL-Observatoire de Lyon, CNRS UMR 142, F-69561 St-Genis-Laval Cedex, France
2 Department of Astronomy and Astronomical Observatory, University of Sofia, P.O. Box 36, BG-1504 Sofia, Bulgaria
3 Institut d'Astrophysique de Paris, 98 bis boulevard Arago, F-75014 Paris, France
Send offprint request to: Ph. Prugniel
Accepted: 1 February 1999
We present 210 new measurements of the central absorption line-strength index for 87 early-type galaxies drawn from the Prugniel & Simien (1996) sample. 28 galaxies were not observed before. The results are compared to measurements published previously as available in HYPERCAT, and rescaled to the Lick system. The mean individual internal error on these measurements is and the mean external error is for this series of measurements.
Key words: galaxies: elliptical and lenticular, cD / galaxies: fundamental parameters / galaxies: stellar content
Tables 1, 3 and 4 are available in electronic form from the CDS, Strasbourg (via anonymous ftp to 22.214.171.124). Tables 1 and 3 are available from CDS only.
© European Southern Observatory (ESO), 1999