Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984stfm.work..183t&link_type=abstract
In Royal Observatory Star Formation Workshop p 183-198 (SEE N85-12809 03-88)
Astronomy and Astrophysics
Astronomy
1
Astronomical Maps, Galactic Nuclei, Galactic Radiation, Infrared Radiation, Stellar Evolution, H Ii Regions, Stellar Luminosity, Thermal Emission
Scientific paper
A 1 to 20 micron mapping of the centers of galaxies encompassing the regions that extend out to several kiloparsecs from the nuclei is reviewed. Power emerging at or = 5 microns is a direct measure of the number of young stars present. This conclusion is strongly supported by the large-scale association of the infrared-emitting regions with visual continuum and line emission indicative of young stars, and by the similarity of the energy distributions to those of Galactic HII region/molecular cloud complexes. Much of the young-star activity is completely hidden from view. At shorter wavelengths, a variety of processes, including bremsstrahlung, are evident.
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