Resonance Rings and Galaxy Morphology

Details Resonance Rings and Galaxy Morphology Resonance Rings and Galaxy Morphology

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ap%26ss.269...79b&link_type=abstract

Astrophysics and Space Science, v. 269/270, p. 79-99 (1999).

Astronomy and Astrophysics

Astrophysics

15

Scientific paper

Rings of star formation are a common phenomenon of early to intermediate Hubble type disk galaxies. Most rings form by gas accumulation at resonances, usually under the continuous action of gravity torques from a bar pattern, but sometimes in response to a mild tidal interaction with a nearby companion. In either case, a resonance is a very special place in any galaxy where star formation can be enhanced and may proceed either as a starburst or continuously over a long time period. This article describes the characteristic morphologies of bar-driven and tidally-driven resonance rings.

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