Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...408...57v&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 408, no. 1, p. 57-70.
Astronomy and Astrophysics
Astrophysics
59
Disk Galaxies, Galactic Clusters, Galactic Evolution, Interacting Galaxies, Tides, Astronomical Models, Celestial Mechanics, Three Body Problem
Scientific paper
The restricted three-body method is used to model the effect of the mean tidal field of a cluster of galaxies on the internal dynamics of a disk galaxy falling into the cluster for the first time. In the model adopted the galaxy experiences a tidal field that is compressive within the core of the cluster. The planar random velocities of all components in the disk increase after the galaxy passes through the core of the cluster. The low-velocity dispersion gas clouds experience a relatively larger increase in random velocity than the hotter stellar components. The increase in planar velocities results in a strong anisotropy between the planar and vertical velocity dispersions. It is argued that this will make the disk unstable to the 'fire-hose instability' which leads to bending modes in the disk and which will thicken the disk slightly. The mean tidal fields in rich clusters were probably stronger during the epoch of cluster formation and relaxation than they are in present-day relaxed clusters.
No associations
LandOfFree
Compressive tidal heating of a disk galaxy in a rich cluster 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 Compressive tidal heating of a disk galaxy in a rich cluster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compressive tidal heating of a disk galaxy in a rich cluster will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1852197