Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.157..299d&link_type=abstract
(Instituto de Astrofisica de Canarias and Comision Interministerial de Ciencia y Tecnologia, Summer School on Evolutionary Pheno
Astronomy and Astrophysics
Astronomy
1
Galactic Radiation, Infrared Astronomy Satellite, Brightness Temperature, Cosmic Dust, Disk Galaxies, Radiative Transfer
Scientific paper
Using IRAS measurements, positive correlations are found between both the infrared to optical flux ratio and infrared color temperature, L(60)/L(100), with optical surface brightness. These correlations can be understood by high surface brightness galaxies having: (1) a high star formation rate or (2) a high-space density of stars and dust. In an attempt to interpret the second possiblity, radiative transfer models have been produced for the dust absorption in a galactic disk. These models indicate that the highest surface brightness galaxies may be the most dust obscured (i.e., optically thick) and that the total luminosity (and, hence, mass) of these galaxies may be considerably underestimated.
Davies Jonathan I.
Disney Michael J.
Phillips Steven
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