Stellar kinematical data for the central region of spiral galaxies, I

Citation
P. Heraudeau et F. Simien, Stellar kinematical data for the central region of spiral galaxies, I, ASTR AST SS, 133(3), 1998, pp. 317-323
Citations number
33
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
ISSN journal
03650138 → ACNP
Volume
133
Issue
3
Year of publication
1998
Pages
317 - 323
Database
ISI
SICI code
0365-0138(199812)133:3<317:SKDFTC>2.0.ZU;2-F
Abstract
We present the results of absorption spectroscopy on the inner region of 34 Sa-Sc galaxies. We have determined the central velocity dispersion and, fo r 32 of these objects, stellar rotation curves and velocity-dispersion prof iles. Some of these profiles are limited to the bulge, some others do reach a region dominated by the luminosity of the disk. These data are intended to provide basic material for the study of the mass distribution and dynami cal status in the central regions of spiral galaxies. Although no elaborate bulge-and-disk photometric decomposition is performed, we estimate the eff ects of limited resolution and contamination by disk light on the central v elocity dispersion of the bulge.