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CO Observations of the Nuclear Bar of IC 342

Published online by Cambridge University Press:  04 August 2017

Masahiko Hayashi ,
Toshihiro Handa ,
Yoshiaki Sofue ,
Naomasa Nakai ,
Tetsuo Hasegawa ,
Steven Lord  and
Judith Young
Masahiko Hayashi
Affiliation:
Nobeyama Radio Observatory, Tokyo Astronomical Observatory, University of Tokyo, Japan
Toshihiro Handa
Affiliation:
Nobeyama Radio Observatory, Tokyo Astronomical Observatory, University of Tokyo, Japan
Yoshiaki Sofue
Affiliation:
Nobeyama Radio Observatory, Tokyo Astronomical Observatory, University of Tokyo, Japan
Naomasa Nakai
Affiliation:
Nobeyama Radio Observatory, Tokyo Astronomical Observatory, University of Tokyo, Japan
Tetsuo Hasegawa
Affiliation:
Nobeyama Radio Observatory, Tokyo Astronomical Observatory, University of Tokyo, Japan
Steven Lord
Affiliation:
Department of Physics and Astronomy, University of Massachusetts, USA
Judith Young
Affiliation:
Department of Physics and Astronomy, University of Massachusetts, USA

Extract

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We have mapped the nuclear region of an Scd galaxy IC 342 in the CO (J = 1-0) emission with an angular resolution of 15″. This galaxy has a bright optical nucleus with a dark lane elongated in the north-south direction. A prominent molecular bar which has been discovered by Lo et al. (1984) using the Owens Valley Interferometer lies just on the dark lane. Their CO map was spatially limited by the primary beam pattern and the velocity coverage of their spectrometer was not sufficient. It is not known, therefore, whether the molecular bar is connected to the outer spiral arms or not. We made the highest resolution CO map accessible by a single-dish telescope with a sufficient velocity coverage.

Type
II. Large Scale Processes of Star Formation
Information
Symposium - International Astronomical Union , Volume 115: Star Forming Regions , 1987 , pp. 631 - 632
Copyright
Copyright © Reidel 1987 

References

Lo, K.Y. et al.: 1984, Astrophys. J. Letters 282, L59.CrossRefGoogle Scholar
Becklin, E.E., Gatley, I., Matthews, K., Neugebauder, G., Sellgren, K., Werner, M.W., and Wynn-Williams, C.G.: 1980, Astrophys. J. 236, 441.CrossRefGoogle Scholar