Spectroscopy of galaxies in the mid-infrared

Details Spectroscopy of galaxies in the mid-infrared Spectroscopy of galaxies in the mid-infrared

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.290..447r&link_type=abstract

In ESA, Infrared Spectroscopy in Astronomy p 447-453 (SEE N90-19084 11-89)

Astronomy and Astrophysics

Astronomy

Galactic Nuclei, Galaxies, H Ii Regions, Infrared Spectroscopy, Emission Spectra, Galactic Structure, Infrared Instruments, Infrared Radiation, Starburst Galaxies

Scientific paper

The mid-infrared spectral properties of galaxies are described. Because of the sensitivity limitations of existing instruments, observations are limited to those galaxies whose nuclei are bright in the infrared. The emission from active galactic nuclei and from nuclear H II regions is analyzed. The unidentified infrared emission in starburst galaxy nuclei and silicate absorption are discussed. Fine structure emission lines can be used to investigate the excitation of the ionized gas and the temperature. Improved instruments are needed to look at the properties of galaxy disk H II regions and other regions, instead of just the core reachable at present.

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