Large-Scale Ring Waves of Star Formation in the Cartwheel Ring Galaxy

Details Large-Scale Ring Waves of Star Formation in the Cartwheel Ring Galaxy Large-Scale Ring Waves of Star Formation in the Cartwheel Ring Galaxy

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26at...22...95v&link_type=abstract

Astronomical and Astrophysical Transactions, vol. 22, Issue 1, p.95-102

Astronomy and Astrophysics

Astrophysics

Scientific paper

Numerical modelling of propagating ring waves of star formation initiated by an off-center head-on galactic collision is performed. It is demonstrated that the observed azimuthal Hα surface brightness profile of the Cartwheel's outer ring can be approximately reproduced for a moderate off-center collision, with the impact point 3-4 kpc displaced from the dynamical center. For larger impact points the ring wave of star formation breaks into a spiral, which cannot account for the observed morphology of the Cartwheel ring galaxy.

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