Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010mnras.401.1080a&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 401, Issue 2, pp. 1080-1090.
Astronomy and Astrophysics
Astronomy
2
Atomic Data, Atomic Processes
Scientific paper
Using a semi-empirical approach, we report in this paper calculated values of the Stark broadening parameters for 58 lines of PbIV. They were calculated using a set of wavefunctions obtained from Hartree-Fock relativistic calculations including core polarization effects. Stark widths for 58 lines of PbIV arising from 5d10ns (n = 7, 8), 5d106p, 5d96s6p, 5d10nd (n = 6, 7), 5d105g and 5d10nh (n = 6, 7) configurations have been calculated in this way. Stark widths and shifts are presented for an electron density of 1017 cm-3and temperatures T = 11000-200000 K. These atomic data are relevant to the analysis of PbIV detected in Far Ultraviolet Spectroscopic Explorer spectra of hot subdwarf B stars and are used to determine the lead abundance of the early B main-sequence star AV 304 in the Small Magallanic Cloud by measuring the 1313.1 Å resonance line. Common trends for the Stark width of the resonance lines have been found and are discussed.
Alonso-Medina A.
Colón C.
Montero J. L.
Nation L.
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