Central Mg-2 indices for early-type galaxies

Authors
Golev, V Prugniel, P Simien, F Longhetti, M
Citation
V. Golev et al., Central Mg-2 indices for early-type galaxies, ASTR AST SS, 136(3), 1999, pp. 519-524
Citations number
31
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
ISSN journal
03650138 → ACNP
Volume
136
Issue
3
Year of publication
1999
Pages
519 - 524
Database
ISI
SICI code
0365-0138(199905)136:3<519:CMIFEG>2.0.ZU;2-F
Abstract
We present 210 new measurements of the central absorption line-strength Mg- 2 index for 87 early-type galaxies drawn from the Prugniel & Simien (1996) sam 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 measuremen ts is 0.(m)009 +/- 0.(m)003 and the mean external error is 0.(m)012 +/- 0.( m)002 for this series of measurements.