Collision strengths for nebular [O III] optical and infrared lines

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Storey, P. J. and Sochi, Taha and Badnell, N. R. (2014) Collision strengths for nebular [O III] optical and infrared lines. Monthly Notices of the Royal Astronomical Society, 441 (1). pp. 3028-3039. ISSN 0035-8711 (https://doi.org/10.1093/mnras/stu777)

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Abstract

We present electron collision strengths and their thermally averaged values for the nebular forbidden lines of the astronomically abundant doubly ionized oxygen ion, O2+, in an intermediate coupling scheme using the Breit–Pauli relativistic terms as implemented in an R-matrix atomic scattering code. We use several atomic targets for the R-matrix scattering calculations including one with 72 atomic terms. We also compare with new results obtained using the intermediate coupling frame transformation method. We find spectroscopically significant differences against a recent Breit–Pauli calculation for the excitation of the [O iii] λ4363 transition but confirm the results of earlier calculations.

ORCID iDs

Storey, P. J., Sochi, Taha and Badnell, N. R. ORCID logoORCID: https://orcid.org/0000-0001-7418-7996;
CORE (COnnecting REpositories)