Prospects for radio observations of molecular clouds at cosmological distances

Details Prospects for radio observations of molecular clouds at cosmological distances Prospects for radio observations of molecular clouds at cosmological distances

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981azh....58...29k&link_type=abstract

(Astronomicheskii Zhurnal, vol. 58, Jan.-Feb. 1981, p. 29-33.) Soviet Astronomy, vol. 25, Jan.-Feb. 1981, p. 16-19. Translation

Astronomy and Astrophysics

Astronomy

10

Carbon Monoxide, Cosmology, Formaldehyde, Molecular Clouds, Radio Astronomy, Radio Spectra, Abundance, Line Spectra, Molecular Absorption, Quasars

Scientific paper

The possibilities of radio observation of CO and H2CO molecules in gas clouds situated at cosmological distances (z exceeding 1) are examined. It is suggested that in quasar radio spectra the molecular absorption line-depths could reach several tens of percent of the continuum flux. The effects that would result from the intrinsic emission of molecular clouds in certain lines are investigated. It is concluded that the occurrence of molecules in gas clouds situated at cosmological distances might well produce detectable features in the radio spectrum. Observations of these features could provide valuable information on the physical conditions in these gaseous complexes, the element and isotope composition of the gas, and a variety of questions relating to the evolution of matter in galaxies at early cosmological epochs.

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