Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26as..129..603q&link_type=abstract
Astronomy and Astrophysics Supplement, v.129, p.603-608
Astronomy and Astrophysics
Astrophysics
5
Atomic Data, Planetary Nebulae: Ngc 7027
Scientific paper
Predicted term energies for values of the principal quantum number up to 30 and orbital quantum numbers l >= 3 in C II, C III and C IV have been obtained using the Ritz and the polarization formulae. Wavelength predictions for lines involving these high-nl term energies together with the corresponding oscillator strengths, calculated by the HFR approach, are also reported in the present paper. Some astrophysical implications of these new atomic data are discussed by means of a comparison with the observed spectra of the planetary nebula NGC 7027
Tables 1 to 5 are also available, Tables 6 to 8 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5).
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