A HIGH-RESOLUTION CATALOG OF COMETARY EMISSION-LINES

Using high-resolution spectra obtained with the Hamilton echelle spect rograph at Lick Observatory, we have constructed a catalog of emission lines observed in comets Swift-Tuttle and Brorsen-Metcalf. The spectr a cover the range between 3800 Angstrom and 9900 Angstrom with a spect ral resolution of lambda/Delta lambda similar to 42000. In the spectra , we catalog 2997 emission lines of which we identify 2438, We find co metary lines due to H, O, C-2, CN, NH2, C-3, H2O+, CH, and CH+. We lis t 559 unidentified lines compiled from the two spectra and comment on possibilities for their origins. (C) 1996 American Astronomical Societ y.