Other
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987nascp2466..421j&link_type=abstract
Star formation in galaxies, Proceedings of a conference at the California Institute of Technology, Pasadena, California, June 16
Other
24
Infrared Spectra, Radio Bursts, Seyfert Galaxies, Spiral Galaxies, Star Formation, Stellar Spectra, Atmospheric Windows, Carbon Monoxide, Hydrogen Atoms, Hydrogen Recombinations, Iron, Near Infrared Radiation, Spectral Emission
Scientific paper
The spectra of galaxies in the near infrared atmospheric transmission windows are explored. Emission lines were detected due to molecular hydrogen, atomic hydrogen recombination lines, a line attributed to FEII, and a broad CO absorption feature. Lines due to H2 and FEII are especially strong in interacting and merging galaxies, but they were also detected in Seyferts and normal spirals. These lines appear to be shock excited. Multi-aperture measurements show that they emanate from regions as large as 15 kpc. It is argued that starbursts provide the most plausible and consistent model for the excitation of these lines, but the changes of relative line intensity of various species with aperture suggest that other excitation mechanisms are also operating in the outer regions of these galaxies.
Gatley Ian
Graham James R.
Joseph Robert D.
Prestwich Andrea H.
Wade Richard
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