VLA imaging of extragalactic ammonia - Hot gas in the nucleus of IC 342

Details VLA imaging of extragalactic ammonia - Hot gas in the nucleus of IC 342 VLA imaging of extragalactic ammonia - Hot gas in the nucleus of IC 342

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...355l..19h&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 355, May 20, 1990, p. L19-L22.

Astronomy and Astrophysics

Astrophysics

35

Ammonia, Galactic Nuclei, High Temperature Gases, Intergalactic Media, Very Large Array (Vla), Angular Resolution, Imaging Techniques, Light Emission, Photoionization, Radio Galaxies

Scientific paper

Extragalactic NH3 is successfully imaged with 5-arcsec resolution using the VLA. Essentially all the single-dish flux is recovered in the interferometer maps. The hot gas (above 70 K), inferred from single-dish NH3 line-intensity ratios, appears to be closely associated with the innermost portions of the nuclear bar seen in CO. Small-scale anticorrelation of the NH3 emission with the central thermal radio continuum emission is likely to be due to heating and photoionization effects.

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