The infrared and radio morphology of the 'hot-spot' galaxy NGC 2903

Details The infrared and radio morphology of the 'hot-spot' galaxy NGC 2903 The infrared and radio morphology of the 'hot-spot' galaxy NGC 2903

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...290..108w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 290, March 1, 1985, p. 108-115.

Other

69

Astronomical Catalogs, Astronomical Maps, Infrared Stars, Radio Galaxies, Stellar Evolution, Astronomical Photography, Charge Coupled Devices, Galactic Nuclei, Infrared Telescopes, Morphology, Starburst Galaxies, Stellar Models

Scientific paper

New maps of the 'hot-spot' galaxy NGC 2903 made at the IRTF and VLA show that while the 'starburst' model for the activity in the central 0.6 kpc is valid, the star-forming activity is definitely not confined to the hot-spots themselves. It is also deduced that the visual appearance of the central regions of NGC 2903 may be at least partially the result of patchy extinction. Comparison of 10-micron and free-free flux densities of this and other galaxies suggests there is an extra component of 10-micron emission from galaxy nuclei above that expected from Ly-alpha heating. It is suggested that this emission may arise from small dust grains that are temporarily heated to high temperatures by visible or UV photons.

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