Other
Scientific paper
Jun 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...356l..39m&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 356, June 20, 1990, p. L39-L42.
Other
53
Emission Spectra, Infrared Spectra, Seyfert Galaxies, Starburst Galaxies, Active Galactic Nuclei, Far Infrared Radiation, Supernovae, X Rays
Scientific paper
This letter reports the results of a comparison of the H2 v = 1-0 S(1) emission line with the 3.28-micron emission feature on a sample of 24 galaxies containing an active galactic nucleus (AGN) or a starburst nucleus (SBN). In the SBNs, a good linear correlation is found between these emissions. If it is assumed that the S(1) line is due to shock heating by supernova events and the 3.28-micron feature is due to UV radiation of young stars, this correlation is well explained by starburst models published by Rieke et al. (1980) and Gehrz et al. (1983). In the AGNs, on the other hand, the relative strengths of 3.28-micron feature to S(1) are smaller than those in the SBNs. This trend is interpreted as due to enhanced excitation of S(1) and destruction of 3.28-micron-emitting material caused by abundant X-ray photons from the Seyfert nuclei.
Kawara Kimiaki
Mouri Hideaki
Nishida Minoru
Taniguchi Yoshiaki
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