A high spectral resolution atlas and catalogue of emission lines of the comet C/2000 WM1 (LINEAR)

Abstract Using five high-resolution spectra of comet C/2000 WM1 (LINEAR) obtained on December 1 and 2, 2001 (UT) with the fiber fed extended range optical spectrograph (FEROS) installed on the 1.52-m reflector of the ESO (Chile, La Silla), we have constructed a high spectral resolution atlas and catalogue of cometary emission lines of this comet. Many emission lines of the molecules C 2 , C 3 , CN, CH, CH + , NH 2 , CO + , H 2 O + , and presumably CO and C 2 − were identified in the spectral range λλ 4000–9000 A in the comet spectra. The total number of identified emission lines is 4537: C 2 – 2734, NH 2 – 1195, CN – 289, C 3 – 158, CO – 60, H 2 O + – 51, CH – 50, CO + – 16, CH + – 8, C 2 − – 5. Also there are many unidentified emission lines in the comet spectrum.