The role of cloud collisions in N-body simulations of disk galaxies

Details The role of cloud collisions in N-body simulations of disk galaxies The role of cloud collisions in N-body simulations of disk galaxies

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phdt.........1k&link_type=abstract

Ph.D. Thesis Alabama Univ., Huntsville.

Astronomy and Astrophysics

Astronomy

Astronomical Models, Computerized Simulation, Disk Galaxies, Many Body Problem, Molecular Clouds, Star Formation, Stellar Spectra, Coalescing, Collision Rates, Fragmentation

Scientific paper

I have created a cloud collision recipe for use in N-body, polar grid, 3-d code. As a result of collisions two clouds can undergo one of four major processes: coalescence, fragmentation, star formation, and dynamical disturbance. I tested my recipe in simulations of disk galaxies, both isolated and interacting. In cases of isolated disks, I have found that cloud collisions play a key role in bulge formation by scattering stars out of the disk plane, which then end up forming a bulge. I have also shown that cloud collisions turn an initially uniform cloud size spectrum into an exponential size spectrum, agreeing very well with observations by Solomon and Rivolo (1989). In addition, I have shown that a disk needs to have a stellar component to form a bar. The bar then often has blobs at its ends, primarily composed of older stars. As a case of interacting disks, I have studied NGC 2535/6, and found that it seems the primary stayed relatively isolated for a few rotation periods, and consequently relaxed to some degree. Then the companion started tidally interacting with the primary, changing its morphology, intensifying cloud collision rates, and bringing about an earlier onset of star formation, which does not reach the same maximum value as in comparable isolated disk.

Affiliated with

Also associated with

No associations

Rating

The role of cloud collisions in N-body simulations of disk galaxies 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 The role of cloud collisions in N-body simulations of disk galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The role of cloud collisions in N-body simulations of disk galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1565757