THE IUE SPECTRUM OF THE O-VI SEQUENCE PLANETARY-NEBULA IC-2003

We present archival low- and high-dispersion, as well as new SWP high- dispersion, IUE data of the ''O vr sequence'' planetary nebula IC 2003 that has not been studied extensively in the UV. Contrary to earlier UV studies, IC 2003 shows a rich spectrum of stellar and nebular emiss ion lines. Nearly 60 new emission line fluxes are presented for He II, C II, C nl, C III, C mi, N mi, N IV], C rv, O III, O mi, O IV], O V, O VI, O vn, O vm, Si II, Si mi, Si Iv, [Ne IV], [Ne vl, [Mg vl, Al III , Fe II, and S VI. Electron densities from C mi and N mi diagnostics w ere determined as log N-e = 3.4 +/- 0.1 and 3.3 +/- 0.1, respectively, in good agreement with those from optical data. The presence of weak P Cygni profiles for O v lambda 1371 and for the C rv lambda 1549 doub let are discussed. Several Fe II Bowen fluorescence lines are detected in the UV spectrum. Emission lines of O VIII and O VII appear to be p resent but need confirmation.