Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...161..169p&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 161, no. 1, June 1986, p. 169-176. CNRS-CNPq-supported research.
Astronomy and Astrophysics
Astrophysics
88
H I Regions, Interstellar Chemistry, Interstellar Gas, Ionization Frequencies, Photoionization, Recombination Reactions, Charge Exchange, Chlorine, Ionization Cross Sections, Iron, Magnesium, Reaction Kinetics, Sodium, Sulfur
Scientific paper
Some of the atomic data relevant to the ionization balance of atoms in H I regions are considered. Photoionization rates are given for several interstellar radiation fields. An updated table of radiative recombination coefficients is given for a number of atoms in the temperature range 10 - 1000K. Attention is drawn to the probable importance of charge exchange reactions and a tentative table of rate coefficients is proposed. These data are used to comment briefly on some observations.
Aldrovandi M. V. S.
Pequignot Daniel
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