Bergin, E. A., Phillips, T. G., Comito, C., Crockett, N. R., Lis, D. C., Schilke, P., Wang, S., Bell, T. A., Blake, G. A., Bumble, B., Caux, E., Cabrit, S., Ceccarelli, C., Cernicharo, J., Daniel, F., de Graauw, Th., Dubernet, M. -L., Emprechtinger, M., Encrenaz, P., Falgarone, E., Gerin, M., Giesen, T. F., Goicoechea, J. R., Goldsmith, P. F., Gupta, H., Hartogh, P., Helmich, F. P., Herbst, E., Joblin, C., Johnstone, D., Kawamura, J. H., Langer, W. D., Latter, W. B., Lord, S. D., Maret, S., Martin, P. G., Melnick, G. J., Menten, K. M., Morris, P., Mueller, H. S. P., Murphy, J. A., Neufeld, D. A., Ossenkopf, V., Pagani, L., Pearson, J. C., Perault, M., Plume, R., Roelfsema, P., Qin, S. -L., Salez, M., Schlemmer, S., Stutzki, J., Tielens, A. G. G. M., Trappe, N., van der Tak, F. F. S., Vastel, C., Yorke, H. W., Yu, S. and Zmuidzinas, J. (2010). Herschel observations of EXtra-Ordinary Sources (HEXOS): The present and future of spectral surveys with Herschel/ HIFI. Astron. Astrophys., 521. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 0004-6361

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Abstract

We present initial results from the Herschel GT key program: Herschel observations of EXtra-Ordinary Sources (HEXOS) and outline the promise and potential of spectral surveys with Herschel/HIFI. The HIFI instrument offers unprecedented sensitivity, as well as continuous spectral coverage across the gaps imposed by the atmosphere, opening up a largely unexplored wavelength regime to high-resolution spectroscopy. We show the spectrum of Orion KL between 480 and 560 GHz and from 1.06 to 1.115 THz. From these data, we confirm that HIFI separately measures the dust continuum and spectrally resolves emission lines in Orion KL. Based on this capability we demonstrate that the line contribution to the broad-band continuum in this molecule-rich source is similar to 20-40% below 1 THz and declines to a few percent at higher frequencies. We also tentatively identify multiple transitions of (HDO)-O-18 in the spectra. The first detection of this rare isotopologue in the interstellar medium suggests that HDO emission is optically thick in the Orion hot core with HDO/H2O similar to 0.02. We discuss the implications of this detection for the water D/H ratio in hot cores.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Bergin, E. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Phillips, T. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Comito, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Crockett, N. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lis, D. C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schilke, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bell, T. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Blake, G. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bumble, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Caux, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cabrit, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ceccarelli, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cernicharo, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Daniel, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de Graauw, Th.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dubernet, M. -L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Emprechtinger, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Encrenaz, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Falgarone, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gerin, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Giesen, T. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goicoechea, J. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goldsmith, P. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gupta, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hartogh, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Helmich, F. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Herbst, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Joblin, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Johnstone, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kawamura, J. H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Langer, W. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Latter, W. B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lord, S. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Maret, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Martin, P. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Melnick, G. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Menten, K. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Morris, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mueller, H. S. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Murphy, J. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Neufeld, D. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ossenkopf, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pagani, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pearson, J. C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Perault, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Plume, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roelfsema, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Qin, S. -L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Salez, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schlemmer, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stutzki, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tielens, A. G. G. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Trappe, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van der Tak, F. F. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vastel, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yorke, H. W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yu, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zmuidzinas, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-494688
DOI: 10.1051/0004-6361/201015071
Journal or Publication Title: Astron. Astrophys.
Volume: 521
Date: 2010
Publisher: EDP SCIENCES S A
Place of Publication: LES ULIS CEDEX A
ISSN: 0004-6361
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
LINE SURVEY; ORION KL; MOLECULAR-SPECTROSCOPY; COLOGNE DATABASE; HOT CORES; WATER; SUBMILLIMETER; GHZ; CLOUDS; BANDMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/49468

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