DELTA-N<2 Allowed Transitions in Neutral Sulphur Within the Visible and Infrared Spectral Ranges

Details DELTA-N<2 Allowed Transitions in Neutral Sulphur Within the Visible and Infrared Spectral Ranges DELTA-N<2 Allowed Transitions in Neutral Sulphur Within the Visible and Infrared Spectral Ranges

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26as..102..435b&link_type=abstract

Astronomy and Astrophysics Supplement, Vol.102, NO. 2/DECI, P. 435, 1993

Astronomy and Astrophysics

Astrophysics

32

Atomic Data, Atomic Processes, Sun: Abundances

Scientific paper

New oscillator strengths have been calculated for Δn ≤ 2 allowed transitions of astrophysical interest in S I. Configuration interaction (Cl) and the most important relativistic effects were taken into account in the computations performed with the help of two independent theoretical methods, HFR and SST, whose accuracy is compared in detail. The solar abundance of sulphur established on the basis of the present oscillator strengths is found to be AS = 7.33±0.04 in the usual logarithmic scale. This new value is somewhat larger than the result obtained from f values estimated with the Coulomb approximation (CA) but is in good agreement with the meteoritic abundance.

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