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Molecular Gas Dynamics in Spiral Arms of M51

Published online by Cambridge University Press:  03 August 2017

Nario Kuno ,
Naomasa Nakai ,
Toshihiro Handa  and
Yoshiaki Sofue
Nario Kuno
Affiliation:
Department of Astronomy, Tohoku University, Japan
Naomasa Nakai
Affiliation:
Nobeyama Radio Observatory, National Astronomical Observatory, Japan
Toshihiro Handa
Affiliation:
Institute of Astronomy, University of Tokyo, Japan
Yoshiaki Sofue
Affiliation:
Institute of Astronomy, University of Tokyo, Japan

Extract

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We present the kinematics and dynamics of molecular gas in the almost entire disk (>5′×5') of the grand-design spiral galaxy M51, derived from CO(J=1−0) observations with the Nobeyama 45-m telescope. The spatial resolution of 17″, which corresponds to 790pc at the distance of M51 (9.6 Mpc), is enough to distinguish between a spiral arm and an interarm; therefore a clear spiral structure (cf Nakai et al, this conference) and large streaming motions of the molecular gas were revealed.

Type
III- Observations of Spiral Structure
Information
Symposium - International Astronomical Union , Volume 146: Dynamics of Galaxies and their Molecular Cloud Distributions , 1991 , pp. 77 - 78
Copyright
Copyright © Kluwer 1991 

References

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