From ISO proposal by Genzel et al.: "Infrared Spectroscopy of Bright Galactic Nuclei and the Connection between Star Formation and AGNs." Brightest lines Species Lambda --------------- [Mg V] 5.608 [Ar III] 8.991 [Ne V] 14.320 [S III] 18.713 [O IV] 25.913 [S III] 33.480 [Si II] 34.814 [O III] 51.815 [O I] 63.184 [C II] 157.741 Starburst galaxies Species Lambda --------------- Br alpha 4.052 [MgV] 5.608 H2 S(5) 6.910 Pf alpha 7.460 [NeVI] 7.642 [ArIII] 8.991 [SIV] 10.511 H2 S(2) 12.279 [NeII] 12.814 [NeV] 14.320 [NeIII] 15.555 H2 S(1) 17.035 [SIII] 18.713 [ArIII] 21.842 [FeIII] 22.930 [FeI] 24.042 [NeV] 24.300 [SI] 25.249 [OIV] 25.913 [FeII] 25.988 H2 S(0) 28.219 [SIII] 33.480 [SiII] 34.814 [FeII] 35.349 [NeIII] 36.020 H2O 40.337 [O III] 51.815 [N III] 57.317 [O I] 63.184 [O III] 88.356 [N II] 121.898 [O I] 145.526 [C II] 157.741 AGN Species Lambda --------------- [SiIX] 2.585 [Mg VIII]3.028 [SiIX] 3.935 [MgIV] 4.488 [MgVII] 5.500 [MgV] 5.608 [SiVII] 6.515 S(5) 6.910 [NeVI] 7.642 [MgVII] 9.030 [SIV] 10.511 S(2) 12.279 [NeII] 12.814 [MgV] 13.540 [NeV] 14.320 [NeIII] 15.555 S(1) 17.035 [SIII] 18.713 [FeIII] 22.930 [FeI] 24.042 [NeV] 24.300 [OIV] 25.913 [FeII] 25.988 S(0) 28.219 [FeII] 35.349 [NeIII] 36.020