AN IMPROVED ULTRAVIOLET SPECTRAL-LINE LIST FOR THE SYMBIOTIC STAR RR-TELESCOPII

We have remeasured wavelengths and intensities of International Ultrav iolet Explorer (IUE) spectra of the symbiotic star, RR Tel. The main w ork is centered on the long 820 minute exposure high-resolution spectr um obtained on 1983 June 18. The list is intended to serve as a source of improved intensities and wavelengths for the ultraviolet spectrum of this star. A complete line list with intensities based on this expo sure has not been published previously. The strongest spectral lines a re saturated in the 820 minute exposure, and intensities for these lin es are mostly obtained from a 20 minute exposure obtained on the same day. A few intensities are obtained from other exposures if neither th e 820 nor the 20 minute exposure is satisfactory. There are 111 lines in our list between 1168 and 1980 angstrom. Some of the very weakest l ines may not be real. These are indicated by question marks. We also d iscuss some of the plasma diagnostics available using spectral tines o f O V and O IV.