Open AccessStark broadening of Sn iii spectral lines of astrophysical interest: predictions and regularities
Author(s) -
AlonsoMedina A.,
Colón C.
Publication year - 2011
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 - 10.1111/j.1365-2966.2011.18438.x
Subject(s) - stark effect , physics , atomic physics , spectral line , line (geometry) , electron , electron density , polarization (electrochemistry) , ion , wave function , stellar atmosphere , doppler broadening , astrophysics , quantum mechanics , chemistry , geometry , mathematics
The determination of the Stark broadening parameters of Sn ions is useful for astrophysicists interested in the determination of the density of electrons in stellar atmospheres. In this paper, we report on the calculated values of the Stark broadening parameters for 171 lines of Sn iii arising from 4d 10 5sns ( n = 6–9 ), 4d 10 5snp ( n = 5, 6 ), 4d 10 5p 2 , 4d 10 5snd ( n = 5–7 ), 4d 10 5s4f and 4d 10 5s5g. Stark linewidths and line shifts are presented for an electron density of 10 23 m −3 and temperatures T = 11 000–75 000 K. These have been calculated using a semi‐empirical approach, with a set of wavefunctions obtained from Hartree–Fock relativistic calculations, including core polarization effects. The results obtained have been compared with available experimental data. These can be used to consider the influence of Stark broadening effects in A‐type stellar atmospheres.