000002254 001__ 2254
000002254 005__ 20160701171702.0
000002254 0247_ $$2DOI$$a10.1139/p11-030
000002254 037__ $$aASTROimport-411
000002254 100__ $$aLobel, A.
000002254 245__ $$aOscillator strength measurements of atomic absorption lines from stellar spectra
000002254 260__ $$c2011
000002254 520__ $$aHerein we develop a new method to determine oscillator strength values of atomic absorption lines with state-of-the-art detailed spectral synthesis calculations of the optical spectrum of the Sun and of standard spectral reference stars. We update the log(gf) values of 911 neutral lines observed in the KPNO-FTS flux spectrum of the Sun and high-resolution echelle spectra (R = 80 000) of Procyon (F5 IV-V) and Eps Eri (K2 V) observed with large signal-to-noise (S/N) ratios of 2000 using the new Mercator-Hermes spectrograph at La Palma Observatory (Spain). We find for 483 Fe I, 85 Ni I, and 51 Si I absorption lines in the sample a systematic overestimation of the literature log(gf) values with central line depths below 15%. We employ a curve-of-growth analysis technique to test the accuracy of the new oscillator strength values and compare calculated equivalent line widths to the Moore, Minnaert, and Houtgast atlas of the Sun. The online SpectroWeb database at http://spectra.freeshell.org interactively displays the observed and synthetic spectra and provides the new log(gf) values together with important atomic line data. The graphical database is under development for stellar reference spectra of every spectral sub-class observed with large spectral resolution and S/N ratios. 
000002254 773__ $$c395-402$$pCanadian Journal of Physics$$v89$$y2011
000002254 85642 $$ahttp://esoads.eso.org/abs/2011CaJPh..89..395L
000002254 905__ $$apublished in
000002254 980__ $$aREFERD