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Interstellar OH+, H...
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Gerin, M.LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
(author)
Interstellar OH+, H2O+ and H3O+ along the sight-line to G10.6-0.4
- Article/chapterEnglish2010
Publisher, publication year, extent ...
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2010-07-16
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EDP Sciences,2010
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electronicrdacarrier
Numbers
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LIBRIS-ID:oai:research.chalmers.se:842a3b9a-685e-49ae-bffb-669d04091db9
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https://doi.org/10.1051/0004-6361/201014576DOI
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https://research.chalmers.se/publication/126555URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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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 and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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de Luca, M.LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
(author)
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Black, John H,1949Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jblack
(author)
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Goicoechea, J.R.Centro de Astrobiologia (CAB)
(author)
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Herbst, E.Ohio State University
(author)
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Neufeld, D.A.Johns Hopkins University
(author)
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Falgarone, E.LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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Godard, B.LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France,Institut d'Astrophysique Spatiale
(author)
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Pearson, T. J.
(author)
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Lis, D.California Institute of Technology (Caltech)
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Phillips, T.G.California Institute of Technology (Caltech)
(author)
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Bell, T. A.California Institute of Technology (Caltech)
(author)
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Sonnentrucker, P.Johns Hopkins University
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Boulanger, F.Institut d'Astrophysique Spatiale
(author)
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Cernicharo, J.Centro de Astrobiologia (CAB)
(author)
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Coutens, A.Centre national de la recherche scientifique (CNRS),Université de Toulouse,University of Toulouse
(author)
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Dartois, E.Institut d'Astrophysique Spatiale
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Encrenaz, P.LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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Giesen, T.Universität zu Köln,University of Cologne
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Goldsmith, P.F.
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Gupta, H.
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Gry, C.Laboratoire d'Astrophysique de Marseille
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Hennebelle, P.LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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Hily-Blant, P.
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Joblin, C.Centre national de la recherche scientifique (CNRS),Université de Toulouse,University of Toulouse
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Kazmierczak, M.Uniwersytet Mikolaja Kopernika w Toruniu,Nicolaus Copernicus University
(author)
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Kolos, R.Polish Academy of Sciences
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Krelowski, J.Uniwersytet Mikolaja Kopernika w Toruniu,Nicolaus Copernicus University
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Martin-Pintado, J.Centro de Astrobiologia (CAB)
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Monje, Raquel,1979Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)em1raque
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Mookerjea, B.Tata Institute of Fundamental Research
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Perault, M.LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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Persson, Carina,1964Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)carina64
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Plume, R.University of Calgary
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Rimmer, P. B.Ohio State University
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Salez, MLERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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Schmidt, M.European Space Astronomy Centre (ESAC)
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Stutzki, J.Universität zu Köln,University of Cologne
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Teyssier, D.MPI fur Extraterrestrische Physik
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Vastel, C.Centre national de la recherche scientifique (CNRS),Université de Toulouse,University of Toulouse
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Yu, S.
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Contursi, A.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.Gemini Observatory North
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Geballe, ThomasPolish Academy of Sciences
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Schlemmer, S.Universität zu Köln,University of Cologne
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Shipman, R.Netherlands Institute for Space Research (SRON)
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Tielens, A.G.G.M.
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Philipp-May, S.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),Gemini Observatory North
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Cros, A.Centre national de la recherche scientifique (CNRS),Université de Toulouse,University of Toulouse
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Zmuidzinas, J.California Institute of Technology (Caltech)
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Samoska, L.A.
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Klein, K.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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Lorenzani, A.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory
(author)
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LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, FranceChalmers tekniska högskola
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In:Astronomy and Astrophysics: EDP Sciences518:4, s. 110-0004-63611432-0746
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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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