Molecular gas content of the primaeval galaxy IRAS 10214 + 4724

Details Molecular gas content of the primaeval galaxy IRAS 10214 + 4724 Molecular gas content of the primaeval galaxy IRAS 10214 + 4724

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.356..318s&link_type=abstract

Nature (ISSN 0028-0836), vol. 356, March 26, 1992, p. 318, 319.

Astronomy and Astrophysics

Astronomy

99

Cosmic Gases, Emission Spectra, Galactic Evolution, Infrared Astronomy, Molecular Gases, Carbon Monoxide, Hydrogen, Line Spectra, Molecular Spectra

Scientific paper

The mass of neutral molecular hydrogen in the faint IRAS source 10214 + 4724, one of the most intrinsically luminous objects in the universe, is estimated to be 2-6 x 10 exp 11 solar, which is comparable to the total mass of a large spiral galaxy and is consistent with the dynamical mass of the galaxy inferred from the CO emission linewidth. The IR/CO luminosity ratio of the galaxy is twice that of most IR-luminous galaxies and about 30 times higher than that of normal spirals. Its IR colors and high IR/CO luminosity ratio indicate that 10214 + 4724 is similar to nearby ultraluminous galaxies that are known to be merging. This galaxy is a primaeval molecular galaxy with the mass of a large spiral, but with most of the mass in molecular gas rather than stars.

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