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CO Observations of the Central Bar of M83

Published online by Cambridge University Press:  04 August 2017

T. Handa
Affiliation:
Department of Astronomy, University of Tokyo, Tokyo, Japan Nobeyama Radio Observatory, Tokyo Astronomy Observatory, Nagano, Japan
Y. Sofue
Affiliation:
Nobeyama Radio Observatory, Tokyo Astronomy Observatory, Nagano, Japan
N. Nakai
Affiliation:
Nobeyama Radio Observatory, Tokyo Astronomy Observatory, Nagano, Japan
M. Fujimoto
Affiliation:
Department of Physics, Nagoya University, Nagoya, Japan
M. Hayashi
Affiliation:
Department of Astronomy, University of Tokyo, Tokyo, Japan Nobeyama Radio Observatory, Tokyo Astronomy Observatory, Nagano, Japan

Abstract

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CO observations of the nuclear region of the SABc galaxy M83 have been made with the 45-m telescope at NRO. A bar-like elongation of the CO emission along the optical bar and a velocity field which suggests noncircular motions are found. These results are consistent with predictions based on the theoretical model of barred spiral galaxies. The inflow and concentration of molecular gas in the nucleus of M83 may supply raw material which maintains a burst of star formation there.

Type
II. Large Scale Processes of Star Formation
Copyright
Copyright © Reidel 1987 

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