A LIBRARY OF IUE WHITE-DWARF SPECTRA FOR STELLAR POPULATION ANALYSES

We present high Signal to Noise ratio IUE spectra of different classes of white dwarfs, to be used as templates for stellar population analy ses in the ultraviolet region. We present average stellar parameters a ssociated to each group. The library contains 6 groups for DA's, 2 for DO's and 5 for DB's. We also present equivalent widths of spectral fe atures, and continuum measurements. We call attention to the spectral characteristics which are promising indicators of the presence of whit e dwarfs in the spectra of composite stellar populations.