Interstellar medium ionization in the vicinity of nonstationary sources of ionizing radiation

Details Interstellar medium ionization in the vicinity of nonstationary sources of ionizing radiation Interstellar medium ionization in the vicinity of nonstationary sources of ionizing radiation

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986kfnt....2...21s&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 2, Mar.-Apr. 1986, p. 21-26. In Russian.

Astronomy and Astrophysics

Astronomy

Interstellar Chemistry, Interstellar Gas, Ion Density (Concentration), Ionized Gases, Ionizing Radiation, Abundance, Astronomical Models, Gas Composition, H Ii Regions, Ion Charge, Nonequilibrium Ionization, Stellar Radiation

Scientific paper

An analysis is made of the formation and relaxation of the ion composition of interstellar gas at 10 to the 4th K in the vicinity of a nonstationary source of ionizing radiation. The relative concentrations of the high-charge ions C IV, N V, O VI, Si III, Si IV, and Si VI in a nonstationary H II zone are calculated as a function of time for simple models with instantaneous switching on and off of the source. Approximate formulas relating to the parameters of the nonstationary H II region to the source power and the time elapsed after switching on are presented.

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