The chemistry of phosphorus in hot molecular cores

S. B. Charnley, T. J. Millar

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51 Citations (Scopus)


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 1044 yr, into atomic P, 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.

Original languageEnglish
Pages (from-to)570-574
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society
Issue number3
Publication statusPublished - 1994
Externally publishedYes


  • Dust, extinction
  • ISM: clouds
  • ISM: molecules
  • Molecular processes

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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