Discovery of a Double Circumnuclear Ring and Minibar in the Starburst Galaxy M83

Details Discovery of a Double Circumnuclear Ring and Minibar in the Starburst Galaxy M83 Discovery of a Double Circumnuclear Ring and Minibar in the Starburst Galaxy M83

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aj....116.2834e&link_type=abstract

The Astronomical Journal, Volume 116, Issue 6, pp. 2834-2840.

Astronomy and Astrophysics

Astronomy

44

Galaxies: Individual (M83, Ngc 5236), Galaxies: Kinematics And Dynamics, Galaxies: Nuclei, Galaxies: Spiral, Galaxies: Starburst

Scientific paper

Our (J-K) color observations of the central regions of the starburst galaxy M83 reveal a double circumnuclear ring. The main dust lanes spiral into the outer nuclear ring at a radius of 150 pc. The two rings may coincide with two inner Lindblad resonances. The main hot spots occur in an arc that is between the rings. A dust bar that is offset 90 deg from the primary stellar bar connects the outer nuclear ring to the inner nuclear ring at a radius of 50 pc and may provide the path for gas to flow to the central starburst.

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