Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.233..175f&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 233, July 1, 1988, p. 175-187. Research supported by th
Astronomy and Astrophysics
Astronomy
40
Cosmology, Disk Galaxies, Galactic Evolution, Infrared Astronomy Satellite, Star Formation, Starburst Galaxies, Galactic Radio Waves, Interacting Galaxies, Luminosity, Quasars, Radio Galaxies, Red Shift, Seyfert Galaxies, Universe
Scientific paper
Exploiting the tight correlation between IR and radio emissions of disc galaxies, it is found that the cosmological evolution of starburst/interacting galaxies, called forth by a recent model by Danese et al. (1987) to account for the mJy and sub-mJy radio source counts, is expected to begin to show up in the IRAS survey data at S(60 microns) of about 0.5 Jy. Hints of cosmological evolution consistent with the model predictions are indeed found in the luminosity distribution of IRAS sources brighter than this limit. Very good agreement is also found between predicted and observed deep 60-micron counts down to 1 mJy, and to the far-IR background light, by normal spirals and irregulars, starburst/interacting galaxies, Seyferts, ellipticals and S0s, radio-loud and radio-quiet QSOs are worked out. Tentative estimates of the contributions to the counts and to the background by primeval galaxies are presented and briefly discussed.
Danese Lugi
de Zotti Gainfranco
Franceschini Alberto
Xu Cenke
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