Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.276..859a&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 276, Issue 3, pp. 859-866.
Astronomy and Astrophysics
Astronomy
158
Atomic Data, Line: Profiles, Sun: Abundances
Scientific paper
Tables of width cross-sections are presented for the broadening of general s-p and p-s atomic transitions by collisions with neutral atomic hydrogen. The transitions are characterized by the effective principal quantum numbers of the s and p states. Each cross-section is given for a relative velocity of 10^4 m s^-1 together with an exponent alpha calculated on the assumption that the cross-section varies with velocity as nu^-alpha. The cross-sections were calculated using the methods described by the authors in a previous paper. The cross-sections are tested by using them in the synthesis of a selection of strong solar lines of sodium, calcium and iron with well-determined f-values. The abundances derived from the strong lines are consistent with the meteoritic values.
Anstee S. D.
O'Mara B. J.
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