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CO observations of Arp's interacting galaxies

Published online by Cambridge University Press:  19 July 2016

Yoshiaki Sofue ,
Ken-Ichi Wakamatsu ,
Yoshiaki Taniguchi ,
Naomasa Nakai  and
Toshihiro Handa
Yoshiaki Sofue
Affiliation:
Institute of Astronomy, University of Tokyo, Mitaka 181, Japan
Ken-Ichi Wakamatsu
Affiliation:
Physics Department, Gifu University, Gifu 505-11, Japan
Yoshiaki Taniguchi
Affiliation:
Institute of Astronomy, University of Tokyo, Mitaka 181, Japan
Naomasa Nakai
Affiliation:
Nobeyama Radio Observatory, Nagano 384-13, Japan
Toshihiro Handa
Affiliation:
Institute of Astronomy, University of Tokyo, Mitaka 181, Japan

Abstract

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A number of starburst galaxies are included in the Atlas of Peculiar Galaxies (Arp 1966) which is the collection of peculiar-morphology galaxies showing mutual tidal interaction. A scenario of starburst can be summarized as follows (e.g. Sofue 1987, Noguchi 1988). Tidal interaction between galaxies causes an oval disturbance in the gravitational potential of a galaxy. The oval disturbance causes a bar in the innermost region of the galaxy. By this bar a galactic shock wave is excited, which results in rapid accretion of gas toward the central region. The accreted gas produces a dense ring or a core of molecular gas in the central region, from which massive stars are born. Intense UV radiation from the stars heats dust in the dense molecular gas core/ring, and the dust emits strong FIR emission.

Type
The LMC-SMC-Galaxy System
Information
Symposium - International Astronomical Union , Volume 148: The Magellanic Clouds , 1991 , pp. 485 - 486
Copyright
Copyright © Kluwer 1991 

References

Arp, H. (1966), Atlas of Peculiar Galaxies. (Calif. Inst. Tech.) p.48.Google ScholarPubMed
Noguchi, M. (1988), Astron. Astrophys. 203, 259.Google Scholar
Sofue, Y. (1987), Galactic and Extragalactic Star Formation , Pudritz, R. (ed.). (Reidel: Dordrecht), p. 409.Google Scholar