Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...174...67s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 174, no. 1-2, March 1987, p. 67-77. Research supported by the Finnish Science
Astronomy and Astrophysics
Astrophysics
49
Density Wave Model, Spiral Galaxies, Tides, Computer Programs, Disk Galaxies, Galactic Structure, Radial Velocity, Simulation
Scientific paper
The tidal spiral arms in galaxies are studied using the two-dimensional polar coordinate N-body program of Miller (1976, 1978) and a two-component disk galaxy perturbed by a point-mass model. The density wave theory, which explains spiral arms in the presence of differential rotation, and the components of the model and computer program are discussed. The spiral arms in the cold (spiral arm population) and hot (old stars) components and their velocity dispersions are examined, and consideration is given to density waves and swing amplification. The data reveal that a grand design spiral pattern can develop in the gaseous component of a disk galaxy as a result of tidal triggering from a companion, and the spiral pattern and kinematics of the particles correlate with predictions from the density wave theory.
Byrd Gene Gilbert
Sundelius Bjorn
Thomasson Magnus
Valtonen Mauri J.
No associations
LandOfFree
Tidal spiral arms in two-component galaxies - Density waves and swing amplification 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 Tidal spiral arms in two-component galaxies - Density waves and swing amplification, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tidal spiral arms in two-component galaxies - Density waves and swing amplification will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1451283