Interstellar cloud evolution and the abundance of formaldehyde

Details Interstellar cloud evolution and the abundance of formaldehyde Interstellar cloud evolution and the abundance of formaldehyde

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...210..328l&link_type=abstract

Astrophysical Journal, vol. 210, Dec. 1, 1976, pt. 1, p. 328-333.

Other

49

Abundance, Carbon Monoxide, Formaldehyde, Interstellar Matter, Time Dependence, Carbon Compounds, Organic Chemistry

Scientific paper

The time scale for essentially complete conversion of C(+) to CO in interstellar clouds can be comparable to, or greater than, dynamical time scales for evolution, therefore suggesting steady state time independent abundances to be inappropriate. The solutions for the time-dependent carbon chemistry in dense clouds, with density not less than 500/cu cm, indicate that significant amounts of neutral carbon will be present throughout a cloud's lifetime. These nonequilibrium values of C I can explain the relatively large abundances observed for formaldehyde, isotopes of carbon monoxide, and other trace molecules

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