/ftp/cats/6/141



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VI/141         Nebular [OIII] collision strengths - SSB          (Storey+, 2014)
The following files can be converted to FITS (extension .fit or fit.gz)
	sets.dat oiii/*
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=VI/141
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drwxr-xr-x 141 cats archive 4096 Sep 6 2023 [Up] drwxr-xr-x 4 cats archive 201 Jan 12 2023 [TAR file] -rw-r--r-- 1 cats archive 466 Dec 19 2022 .message -r--r--r-- 1 cats archive 4393 Nov 28 2014 ReadMe drwxr-xr-x 2 cats archive 310 May 6 2014 oiii -r--r--r-- 1 cats archive 820 May 6 2014 sets.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : VI/141 Nebular [OIII] collision strengths - SSB (Storey+, 2014) ================================================================================ Collision strengths for nebular [O III] optical and infrared lines. Storey P.J., Sochi T., Badnell N.R. <Mon. Not. R. Astron. Soc. 441, 3028 (2014)> =2014MNRAS.441.3028S =2014yCat.6141....0S ================================================================================ ADC_Keywords: Atomic physics Keywords: atomic data - atomic processes - radiation mechanisms: non-thermal - planetary nebulae: general - infrared: general Abstract: We present electron collision strengths and their thermally averaged values for the nebular forbidden lines of the astronomically abundant doubly ionized oxygen ion, O^2+^, 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 20 intermediate coupling frame transformation method. We find spectroscopically significant differences against a recent Breit-Pauli calculation for the excitation of the [OIII] lambda4363 transition but confirm the results of earlier calculations. Description: The data set consists of ten files which are labeled as 'OMEGA_m_n_OIII.dat' where m=1,2,3,4 and n=2,3,4,5 with m<n. The indices m and n refer to the level index as given in the note. In each file the first column represents the electron excitation energy in Rydberg and the second column represents the collision strength for the transition between the indicated levels.