Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-04-21
Mon.Not.Roy.Astron.Soc. 351 (2004) 1247
Astronomy and Astrophysics
Astrophysics
Accepted for publication by Mon. Not. R.A.S
Scientific paper
10.1111/j.1365-2966.2004.07864.x
We present deep optical long-slit spectra of 17 edge-on spiral galaxies of intermediate to late morphological type, mostly parallel to their major axes and in a few cases parallel to the minor axes.The line-of-sight stellar kinematics are obtained from the stellar absorption lines using the improvedc ross-correlation technique. In general, the stellar kinematics are regular and can be traced well into the disc-dominated region. The mean stellar velocity curves are far from solid-body, indicating that the effect of dust extinction is not large. The line-of-sight stellar disc velocity dispersion correlates with the galaxy maximum rotational velocity, but detailed modeling is necessary to establish whether this represents a physical relation. In four spirals with a boxy- or peanut-shaped bulge we are able to detect asymmetric velocity distributions, having a common signature with projected radius in the mean line-of-sight velocity and the $h_{3}$ and $h_{4}$ curves. In two cases this kinematic asymmetry probably represents the `figure-of-eight' pattern synonymous of a barred potential. We emphasize, however, that the signatures seen in the $h_{3}$ and $h_{4}$ curves may also be due to the disc seen in projection.
der Kruit Pieter C. van
Freeman Ken C.
Kregel Michiel
No associations
LandOfFree
Structure and kinematics of edge-on galaxy discs - I. Observations of the stellar kinematics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Structure and kinematics of edge-on galaxy discs - I. Observations of the stellar kinematics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structure and kinematics of edge-on galaxy discs - I. Observations of the stellar kinematics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-17910