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A High-Resolution CO Mapping of the Nucleus of the Barred-Spiral Galaxy, M83

Published online by Cambridge University Press:  12 April 2016

Toshihiro Handa ,
Sumio Ishizuki  and
Ryohei Kawabe
Toshihiro Handa
Affiliation:
University of Tokyo, Institute of Astronomy
Sumio Ishizuki
Affiliation:
Nobeyama Radio Observatory
Ryohei Kawabe
Affiliation:
Nobeyama Radio Observatory

Extract

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M83 is the best sample to investigate gas response to bar potential because it is one of the nearest galaxy with a pronounced bar structure (distance=3.7 Mpc). Handa et al. (1990) observed it with the Nobeyama 45-m telescope in CO(J=1-0) and found concentration of the CO emission to the dust lanes along the bar and non-circular rotation. However we need better spatial resolution in order to investigate kinematics and distribution of molecular gas in the nuclear region. So we observe the central region of M83 using the Nobeyama Millimeter Array. The synthesized beamsize was 12″ × 6″ and frequency coverage was 325 km s-1.

Type
3. Astronomical Results and Prospects
Information
International Astronomical Union Colloquium , Volume 140: Astronomy with Millimeter and Submillimeter Wave Interferometry , 1994 , pp. 341 - 342
Copyright
Copyright © Astronomical Society of the Pacific 1994

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