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Interstellar OH+, H...
Interstellar OH+, H2O+ and H3O+ along the sight-line to G10.6-0.4
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- Gerin, M. (author)
- LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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- de Luca, M. (author)
- LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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- Black, John H, 1949 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Goicoechea, J.R. (author)
- Centro de Astrobiologia (CAB)
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- Herbst, E. (author)
- Ohio State University
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- Neufeld, D.A. (author)
- Johns Hopkins University
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- Falgarone, E. (author)
- LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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- Godard, B. (author)
- LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France,Institut d'Astrophysique Spatiale
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Pearson, T. J. (author)
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- Lis, D. (author)
- California Institute of Technology (Caltech)
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- Phillips, T.G. (author)
- California Institute of Technology (Caltech)
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- Bell, T. A. (author)
- California Institute of Technology (Caltech)
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- Sonnentrucker, P. (author)
- Johns Hopkins University
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- Boulanger, F. (author)
- Institut d'Astrophysique Spatiale
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- Cernicharo, J. (author)
- Centro de Astrobiologia (CAB)
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- Coutens, A. (author)
- Centre national de la recherche scientifique (CNRS),Université de Toulouse,University of Toulouse
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- Dartois, E. (author)
- Institut d'Astrophysique Spatiale
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- Encrenaz, P. (author)
- LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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- Giesen, T. (author)
- Universität zu Köln,University of Cologne
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Goldsmith, P.F. (author)
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Gupta, H. (author)
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- Gry, C. (author)
- Laboratoire d'Astrophysique de Marseille
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- Hennebelle, P. (author)
- LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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Hily-Blant, P. (author)
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- Joblin, C. (author)
- Centre national de la recherche scientifique (CNRS),Université de Toulouse,University of Toulouse
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- Kazmierczak, M. (author)
- Uniwersytet Mikolaja Kopernika w Toruniu,Nicolaus Copernicus University
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- Kolos, R. (author)
- Polish Academy of Sciences
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- Krelowski, J. (author)
- Uniwersytet Mikolaja Kopernika w Toruniu,Nicolaus Copernicus University
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- Martin-Pintado, J. (author)
- Centro de Astrobiologia (CAB)
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- Monje, Raquel, 1979 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Mookerjea, B. (author)
- Tata Institute of Fundamental Research
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- Perault, M. (author)
- LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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- Persson, Carina, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Plume, R. (author)
- University of Calgary
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- Rimmer, P. B. (author)
- Ohio State University
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- Salez, M (author)
- LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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- Schmidt, M. (author)
- European Space Astronomy Centre (ESAC)
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- Stutzki, J. (author)
- Universität zu Köln,University of Cologne
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- Teyssier, D. (author)
- MPI fur Extraterrestrische Physik
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- Vastel, C. (author)
- Centre national de la recherche scientifique (CNRS),Université de Toulouse,University of Toulouse
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Yu, S. (author)
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- Contursi, A. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Menten, K. (author)
- Gemini Observatory North
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- Geballe, Thomas (author)
- Polish Academy of Sciences
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- Schlemmer, S. (author)
- Universität zu Köln,University of Cologne
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- Shipman, R. (author)
- Netherlands Institute for Space Research (SRON)
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Tielens, A.G.G.M. (author)
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- Philipp-May, S. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),Gemini Observatory North
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- Cros, A. (author)
- Centre national de la recherche scientifique (CNRS),Université de Toulouse,University of Toulouse
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- Zmuidzinas, J. (author)
- California Institute of Technology (Caltech)
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Samoska, L.A. (author)
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- Klein, K. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Lorenzani, A. (author)
- Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory
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(creator_code:org_t)
- 2010-07-16
- 2010
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 518:4, s. 110-
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https://www.aanda.or...
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Abstract
Subject headings
Close
- We report the detection of absorption lines by the reactive ions OH+, H2O+ and H3O+ along the line of sight to the submillimeter continuum source G10.6$-$0.4 (W31C). We used the Herschel HIFI instrument in dual beam switch mode to observe the ground state rotational transitions of OH+ at 971 GHz, H2O+ at 1115 and 607 GHz, and H3O+ at 984 GHz. The resultant spectra show deep absorption over a broad velocity range that originates in the interstellar matter along the line of sight to G10.6$-$0.4 as well as in the molecular gas directly associated with that source. The OH+ spectrum reaches saturation over most velocities corresponding to the foreground gas, while the opacity of the H2O+ lines remains lower than 1 in the same velocity range, and the H3O+ line shows only weak absorption. For LSR velocities between 7 and 50 kms$^{-1}$ we estimate total column densities of $N$(OH+) $> 2.5 \times 10^{14}$ cm$^{-2}$, $N$(H2O+) $\sim 6 \times 10^{13}$ cm$^{-2}$ and $N$(H3O+) $\sim 4.0 \times 10^{13}$ cm$^{-2}$. These detections confirm the role of O$^+$ and OH$^+$ in initiating the oxygen chemistry in diffuse molecular gas and strengthen our understanding of the gas phase production of water. The high ratio of the OH+ by the H2O+ column density implies that these species predominantly trace low-density gas with a small fraction of hydrogen in molecular form.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- ISM: molecules
- ISM: clouds
- ISM: general
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Gerin, M.
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de Luca, M.
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Black, John H, 1 ...
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Goicoechea, J.R.
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Herbst, E.
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Neufeld, D.A.
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show more...
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Falgarone, E.
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Godard, B.
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Pearson, T. J.
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Lis, D.
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Phillips, T.G.
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Bell, T. A.
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Sonnentrucker, P ...
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Boulanger, F.
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Cernicharo, J.
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Coutens, A.
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Dartois, E.
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Encrenaz, P.
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Giesen, T.
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Goldsmith, P.F.
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Gupta, H.
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Gry, C.
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Hennebelle, P.
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Hily-Blant, P.
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Joblin, C.
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Kazmierczak, M.
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Kolos, R.
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Krelowski, J.
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Martin-Pintado, ...
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Monje, Raquel, 1 ...
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Mookerjea, B.
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Perault, M.
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Persson, Carina, ...
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Plume, R.
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Rimmer, P. B.
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Salez, M
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Schmidt, M.
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Stutzki, J.
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Teyssier, D.
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Vastel, C.
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Yu, S.
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Contursi, A.
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Menten, K.
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Geballe, Thomas
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Schlemmer, S.
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Shipman, R.
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Tielens, A.G.G.M ...
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Philipp-May, S.
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Cros, A.
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Zmuidzinas, J.
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Samoska, L.A.
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Klein, K.
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Lorenzani, A.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astronomy and As ...
- By the university
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Chalmers University of Technology