Astronomy and Astrophysics – Astronomy
Scientific paper
May 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...268l..79t&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 268, May 15, 1983, p. L79-L83.
Astronomy and Astrophysics
Astronomy
119
Galactic Nuclei, Radio Astronomy, Spiral Galaxies, Star Formation, Thermal Emission, Astronomical Maps, Early Stars, Extragalactic Radio Sources, H Ii Regions
Scientific paper
Both the spectral and spatial information in high-resolution radio continuum maps is used to decouple thermal emission due to H II regions from the extended, strong synchrotron emission found in galactic cores. A first-order analysis, assuming constant spectral indices across the maps, yields thermal fluxes to within a factor of 2. The presence of large numbers of H II regions and young stars in the nuclear regions of three nearby spiral galaxies is thus confirmed.
Ho Pak Tung
Turner Jean L.
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