Collisional growth of giant molecular clouds

Details Collisional growth of giant molecular clouds Collisional growth of giant molecular clouds

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...229..578s&link_type=abstract

Astrophysical Journal, Part 1, vol. 229, Apr. 15, 1979, p. 578-582.

Astronomy and Astrophysics

Astrophysics

95

Gas Density, Hydrogen Clouds, Interstellar Gas, Molecular Collisions, Deposition, Hydrogen, Mass, Milky Way Galaxy, Stellar Evolution, Stellar Mass Accretion

Scientific paper

Cloud-cloud collisional accretion may account for the high masses observed for the giant molecular clouds populating both arm and interarm regions in the inner galactic plane. The accretion mechanism seems probable if consideration is given to the longevity of these clouds (greater than 100 million years). Thus within a billion years, an initial distribution of small clouds could grow to the observed magnitude of 100,000 to one million solar masses. At a few hundred thousand solar masses, growth would be balanced by H2 removal into stars.

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