Statistics – Computation
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...386..398v&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 386, Feb. 20, 1992, p. 398-407. Research supported by NASA.
Statistics
Computation
1
Carbon Monoxide, Cosmology, Galactic Evolution, Interstellar Matter, Prediction Analysis Techniques, Brightness Distribution, Computational Astrophysics, Infrared Astronomy, Interacting Galaxies
Scientific paper
The CO galaxy counts are predicted from studies of LCO in nearby galaxies, with consideration given to how these counts may be compared to the current understanding of recent galaxy evolution. The average number of galaxies per square degree with CO (1-0) emission above a brightness threshold of 4.5 x 10 exp -20 W/sq m is predicted to be 0.5 +/-4.0. The expressed uncertainty in the predicted galaxy counts comes primarily from uncertainties in the absolute scale and high-luminosity cutoff of the CO luminosity function. Using present-technology mm-radio telescopes and receivers, it is possible to employ galaxy counts in CO (1-0) emission to test theories of recent (z is less than about 0.4) galaxy evolution. If it is true that interactions among galaxies and consequent starbursts were more common in the recent past, as suggested by galaxy counts at far-IR and cm-radio wavelengths, then it is anticipated that the molecular emission of galaxies will increase with redshift and the CO galaxy counts will exceed this prediction based on nearby galaxies.
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