ATOMIC DATA FOR RESONANCE-ABSORPTION LINES .1. WAVELENGTHS LONGWARD OF THE LYMAN LIMIT

This compilation presents wavelengths, statistical weights, and excitation energies for 2031 atomic spectral lines in 658 multiplets whose lower energy levels lie below 2217 cm-1 or 0.275 eV. Transition probabilities and oscillator strengths (f-values) are included for most of the lines, and radiation damping constants for many of the stronger ones. This list of resonance lines contains the transitions likely to be observed in absorption in interstellar gas clouds, circumstellar shells, stellar winds, QSO winds, and clouds on the sight lines to QSOs, where neither the particle density nor the radiation density is large enough to populate the higher levels significantly. The tables cover transitions of all the ion stages of all elements from hydrogen to germanium which have permitted or intersystem lines that originate from the ground level or excited fine-structure levels of the ground term at wavelengths longward of the Lyman limit at 911.75 angstrom. Forbidden lines and molecular lines are excluded. Many weak lines are included for the more abundant elements, so that to the extent that the available estimates of f-values permit, the tables are complete for all interstellar atomic absorption lines with Z less-than-or-equal-to 32 that are likely to be detected by the Hubble Space Telescope. This paper presents the best available data on wavelengths and transition probabilities and includes notes indicating where improved information would be most useful. The accompanying finding list was compared with the unidentified interstellar absorption lines found in the Copernicus spectra of zeta-Oph and zeta-Pup. The list includes seven new Fe II lines that were not known at the time of the original analyses and one I that was missed. There remain 15 lines toward zeta-Oph and 42 toward zeta-Pup without convincing identifications.