Nonlinear Sciences – Chaotic Dynamics
Scientific paper
Nov 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011eas....52...87d&link_type=abstract
EAS Publications Series, Volume 52, 2011, pp.87-93
Nonlinear Sciences
Chaotic Dynamics
Scientific paper
The dynamics of stars and gas appear markedly different in flocculent, tidally induced and quasi-stationary spiral galaxies. Numerical simulations show that the gas and stars exhibit fairly chaotic dynamics during a tidal interaction, unlike the predictions of density wave theory. For a flocculent galaxy, the stars and gas tend to be situated in potential minima associated with the stellar distribution. I will demonstrate a possible observational test to distinguish between drivers of spiral structure by comparing the ages of stellar clusters, using the results of the simulations as an example. With high resolution simulations, we are also starting to resolve giant molecular clouds, and can thus relate the properties of these clouds to the presence of spiral structure. Calculations so far suggest that spiral structure simply defines where the clouds form, rather than directly triggering star formation. In the last section of this review, I highlight recent efforts to produce synthetic HI and CO observations from numerical simulations.
No associations
LandOfFree
Spiral Structure and Star Formation 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 Spiral Structure and Star Formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spiral Structure and Star Formation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-737198