The Chemistry of Phosphorus in Hot Molecular Cores

Details The Chemistry of Phosphorus in Hot Molecular Cores The Chemistry of Phosphorus in Hot Molecular Cores

Oct 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.270..570c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 270, NO. 3/OCT1, P. 570, 1994

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Scientific paper

Hot molecular cores in star-forming regions are known to have gas-phase chemical compositions determined by the material evaporated from the icy mantles of interstellar grains, followed by subsequent reactions in the gas phase. Current models suggest that the evaporated material is rich in hydrogenated species. In this paper, we consider the chemistry induced in a hot core by the release of phosphine, PH3, from interstellar grains. We find that PH3 is rapidly destroyed by a series of reactions with atomic hydrogen and is converted, within 10 yr, into atomic?, and PO and PN, with P atoms being the most abundant species. Other P-bearing molecules can be formed in the hot gas, but on time-scales that are long compared to those of the hot cores. Key words: molecular processes - ISM: clouds - dust, extinction - ISM: molecules.

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