Crockett, N.R. and Bergin, E.A. and Wang, S. and Lis, D.C. and Bell, T.A. and Blake, G.A. and Boogert, A. and Bumble, B. and Cabrit, S. and Caux, E. and Ceccarelli, C. and Cernicharo, J. and Comito, C. and Daniel, F. and Dubernet, M.-L. and Emprechtinger, M. and Encrenaz, P. and Falgarone, E. and Gerin, M. and Giesen, T.F. and Goicoechea, J.R. and Goldsmith, P.F. and Gupta, H. and Gusten, R. and Hartogh, P. and Helmich, F. and Herbst, E. and Honingh, E. and Joblin, C. and Johnstone, D. and Karpov, A. and Kawamura, J. and Kooi, J. and Krieg, J.-M. and Langer, W. and Latter, W.B. and Lord, S.D. and Maret, S. and Martin, P.G. and Melnick, G.J. and Menten, K.M. and Morris, P. and Muller, H.S.P. and Murphy, J.A. and Neufeld, D.A. and Ossenkopf, V. and Pearson, J.C. and Perault, M. and Phillips , T.G. and Plume, R. and Qin, S.-L. and Roelfsema, P.R. and Schieder, R. and Schilke, P. and Schlemmer, S. and Stutzki, J. and van der Tak, F.F.S. and Tielens, A. and Trappe, N. and Vastel, C. and Yorke, H.W. and Yu, S. and Zmuidzinas, J.
Herschel observations of EXtra-Ordinary Sources (HEXOS): The
Terahertz spectrum of Orion KL seen at high spectral resolution.
Astronomy & Astrophysics, 521 (L21).
We present the first high spectral resolution observations of Orion KL in the frequency ranges 1573.4–1702.8 GHz (band 6b) and
1788.4–1906.8 GHz (band 7b) obtained using the HIFI instrument on board the Herschel Space Observatory. We characterize the main emission
lines found in the spectrum, which primarily arise from a range of components associated with Orion KL including the hot core, but also
see widespread emission from components associated with molecular outflows traced by H2O, SO2, and OH. We find that the density of observed
emission lines is significantly diminished in these bands compared to lower frequency Herschel/HIFI bands.
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