The broadening of Fe II lines by neutral hydrogen collisions

Details The broadening of Fe II lines by neutral hydrogen collisions The broadening of Fe II lines by neutral hydrogen collisions

2005-02-04

arxiv.org/abs/astro-ph/0502098v1

Astronomy and Astrophysics

Astrophysics

Accepted for A&A. 5 pages, 5 figures, 2 electronic tables. Tables will be available via CDS; presently also at http://www.as

Scientific paper

10.1051/0004-6361:20042469

Data for the broadening of 24188 Fe II lines by collisions with neutral hydrogen atoms have been computed using the theory of Anstee & O'Mara as extended to singly ionised species and higher orbital angular momentum states by Barklem & O'Mara. Data have been computed for all Fe II lines between observed energy levels in the line lists of Kurucz with log gf > -5 for which the theory is applicable. The variable energy debt parameter Ep used in computing the second order perturbation theory potential is chosen to be consistent with the long range dispersion interaction constant C6 computed using the f-values from Kurucz.

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