ATOMIC DATA FOR ABSORPTION-LINES FROM THE GROUND-LEVEL AT WAVELENGTHSGREATER-THAN-228-ANGSTROM

We list wavelengths, statistical weigths and oscillator strengths for 2249 spectral lines arising from the ground states of atoms and ions. The compilation covers all wavelengths longward of the HeII Lyman limi t at 227.838 Angstrom and all the ion states of all elements from hydr ogen to bismuth (Z = 83) for which reliable data are known. We assign experimental wavelengths to 1086 lines which have oscillator strengths calculated in the Opacity Project, and add 1163 lines which have crit ically evaluated oscillator strengths from previous compilations. The presented data are to be used for quasar absorption spectra interpreta tion. We use solar abundances to calculate the expected relative stren gths of all absorption lines, and list separately the strongest lines above 228 Angstrom expected in QSO absorption systems, many of which a re listed here for the first time. The great majority of strong lines expected in quasar spectra are at lambda < 912 Angstrom. We also list the strongest absorption lines of Various ions without wavelength rest riction.