A molecular gas bar fuelling starburst activity in galaxy IC342

Details A molecular gas bar fuelling starburst activity in galaxy IC342 A molecular gas bar fuelling starburst activity in galaxy IC342

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990natur.344..224i&link_type=abstract

Nature (ISSN 0028-0836), vol. 344, March 15, 1990, p. 224-226.

Physics

121

Interstellar Gas, Molecular Gases, Spiral Galaxies, Starburst Galaxies, Emission Spectra, Galactic Evolution, Galactic Nuclei, Gravitational Fields, Molecular Clouds, Radio Emission

Scientific paper

CO(J = 1 - 0) line emission has been mapped from the central region of a late-type spiral galaxy IC342. A pair of narrow ridges of molecular gas, offset and forming a ringlike structure in the galactic nucleus is found; the motion of the gas in these bars is highly noncircular. This structure is very similar to that of the gas in the elliptical gravitational field of barred spiral galaxies. Strong radio continuum emission in the nuclear region suggests that it may be a site of starburst activity; if so, it is possible that the activity is being fuelled by the molecular gas bars.

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