Open AccessBroadening of lines of Be ii , Sr ii and Ba ii by collisions with hydrogen atoms and the solar abundance of strontium
Author(s) -
Barklem P. S.,
O’Mara B. J.
Publication year - 2000
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2000.03090.x
Subject(s) - strontium , physics , beryllium , ionization , atomic physics , abundance (ecology) , hydrogen , barium , spectral line , ion , chemistry , nuclear physics , astronomy , quantum mechanics , fishery , biology , inorganic chemistry
In a previous paper by the present authors the theory of Anstee and O’Mara for the broadening of spectral lines of neutral atoms by collisions with hydrogen atoms was extended to singly ionized atoms. In this paper we apply the method to the resonance and triplet lines of ionized strontium, the infrared triplet of ionized barium, and the resonance lines of ionized beryllium. Analysis of five lines of ionized strontium, previously regarded as too strong for an abundance analysis, and two lines of neutral strontium results in a solar abundance of strontium of log( N Sr N H )+12=2.92±0.05, which is entirely consistent with the meteoritic value.