Herschel observations of EXtra-Ordinary Sources (HEXOS): The present and future of spectral surveys with Herschel/ HIFI

被引：101

作者：

Bergin, E. A. ^{[1
]}

Phillips, T. G. ^{[2
]}

Comito, C. ^{[3
]}

Crockett, N. R. ^{[1
]}

Lis, D. C. ^{[2
]}

Schilke, P. ^{[3
,4
]}

Wang, S. ^{[1
]}

Bell, T. A. ^{[2
]}

Blake, G. A. ^{[5
]}

Bumble, B. ^{[6
]}

Caux, E. ^{[7
,8
]}

Cabrit, S. ^{[9
,12
]}

Ceccarelli, C. ^{[10
]}

Cernicharo, J. ^{[11
]}

Daniel, F. ^{[11
,13
,14
]}

de Graauw, Th. ^{[15
]}

Dubernet, M. -L. ^{[16
,17
]}

Emprechtinger, M. ^{[2
]}

Encrenaz, P. ^{[13
,14
]}

Falgarone, E. ^{[13
,14
]}

Gerin, M. ^{[13
,14
]}

Giesen, T. F. ^{[4
]}

Goicoechea, J. R. ^{[11
]}

Goldsmith, P. F. ^{[6
]}

Gupta, H. ^{[6
]}

Hartogh, P. ^{[18
]}

Helmich, F. P. ^{[15
]}

Herbst, E. ^{[19
,20
,21
]}

Joblin, C. ^{[7
,8
]}

Johnstone, D. ^{[22
]}

Kawamura, J. H. ^{[6
]}

Langer, W. D. ^{[6
]}

Latter, W. B. ^{[23
]}

Lord, S. D. ^{[23
]}

Maret, S. ^{[10
]}

Martin, P. G. ^{[24
]}

Melnick, G. J. ^{[25
]}

Menten, K. M. ^{[3
]}

Morris, P. ^{[23
]}

Mueller, H. S. P. ^{[4
]}

Murphy, J. A. ^{[26
]}

Neufeld, D. A. ^{[27
]}

Ossenkopf, V. ^{[4
,15
]}

Pagani, L. ^{[9
,12
]}

Pearson, J. C. ^{[6
]}

Perault, M. ^{[13
,14
]}

Plume, R. ^{[28
]}

Roelfsema, P. ^{[15
]}

Qin, S. -L. ^{[4
]}

Salez, M. ^{[9
,12
]}

机构：

[1] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA

[2] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA

[3] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[4] Univ Cologne, Inst Phys 1, D-50937 Cologne, Germany

[5] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA

[6] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[7] Univ Toulouse UPS, Ctr Etud Spatiale Rayonnements, F-31062 Toulouse 9, France

[8] CNRS INSU, UMR 5187, F-31028 Toulouse 4, France

[9] LERMA, F-75014 Paris, France

[10] Lab Astrophys Observ Grenoble, F-38041 Grenoble 9, France

[11] Ctr Astrobiol CSIC INTA, Lab Astrofis Mol, Madrid 28850, Spain

[12] Observ Paris, CNRS, UMR8112, F-75014 Paris, France

[13] Observ Paris, UMR8112, CNRS, LERMA, F-75231 Paris 05, France

[14] Ecole Normale Super, F-75231 Paris 05, France

[15] Univ Groningen, SRON Netherlands Inst Space Res, NL-9700 AV Groningen, Netherlands

[16] Univ Paris 06, LPMAA, UMR7092, Paris, France

[17] Observ Paris, LUTH, UMR8102, Meudon, France

[18] MPI Inst Sonnensyst Forsch, D-37191 Katlenburg Lindau, Germany

[19] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[20] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA

[21] Ohio State Univ, Dept Chem, Columbus, OH 43210 USA

[22] Natl Res Council Canada, Herzberg Inst Astrophys, Victoria, BC V9E 2E7, Canada

[23] CALTECH, Ctr Infrared Proc & Anal, Pasadena, CA 91125 USA

[24] Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada

[25] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[26] Natl Univ Ireland Maynooth, Maynooth, Kildare, Ireland

[27] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[28] Univ Calgary, Dept Phys & Astron, Calgary, AB T2N 1N4, Canada

[29] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands

来源：

ASTRONOMY & ASTROPHYSICS | 2010年 / 521卷

关键词：

ISM: abundances; ISM: molecules; submillimeter: ISM; LINE SURVEY; ORION KL; MOLECULAR-SPECTROSCOPY; COLOGNE DATABASE; HOT CORES; WATER; SUBMILLIMETER; GHZ; CLOUDS; BAND;

D O I：

10.1051/0004-6361/201015071

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：6

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