Version 3 2017-05-12, 12:54Version 3 2017-05-12, 12:54
Version 2 2017-03-29, 12:47Version 2 2017-03-29, 12:47
Version 1 2017-03-29, 12:45Version 1 2017-03-29, 12:45
journal contribution
posted on 2017-05-12, 12:54authored byTaha SochiTaha Sochi, P.J. Storey, Robert Bastin
We present the results of a calculation of recombination
coefficients for O^{2+} + e^- using an intermediate coupling treatment that
fully accounts for the dependence of the distribution of population among the
ground levels of O^{2+} on electron density and temperature. The calculation is
extended down to low electron temperatures where dielectronic recombination
arising from Rydberg states converging on the O^{2+} ground levels is an important
process. The data, which consist of emission coefficients for 8889
recombination lines and recombination coefficients for the ground and
metastable states of O^+ are in Cases A, B and C, and are organised as a
function of the electron temperature and number density, as well as wavelength.
An interactive fortran 77 data server is also provided as an accessory for
mining the line emission coefficients and obtaining Lagrange interpolated
values for any choice of the two variables between the explicitly provided
values for any set of wavelengths. Some illustrations of the application of the
new data to nebular observations are also provided.