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  • Bruderer, S.Eidgenössische Technische Hochschule Zürich (ETH),Swiss Federal Institute of Technology in Zürich (ETH) (author)

Herschel/HIFI detections of hydrides towards AFGL 2591. Envelope emission versus tenuous cloud absorption

  • Article/chapterEnglish2010

Publisher, publication year, extent ...

  • 2010-10-01
  • EDP Sciences,2010
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-51491
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-51491URI
  • https://doi.org/10.1051/0004-6361/201015098DOI
  • https://research.chalmers.se/publication/131887URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • authorCount :69
  • The Heterodyne Instrument for the Far Infrared (HIFI) onboard the Herschel Space Observatory allows the first observations of light diatomic molecules at high spectral resolution and in multiple transitions. Here, we report deep integrations using HIFI in different lines of hydrides towards the high-mass star forming region AFGL 2591. Detected are CH, CH+, NH, OH+, H2O+, while NH+ and SH+ have not been detected. All molecules except for CH and CH+ are seen in absorption with low excitation temperatures and at velocities different from the systemic velocity of the protostellar envelope. Surprisingly, the CH(JF,P = 3/22,- - 1/21,+ ) and CH+(J = 1-0, J = 2-1) lines are detected in emission at the systemic velocity. We can assign the absorption features to a foreground cloud and an outflow lobe, while the CH and CH+ emission stems from the envelope. The observed abundance and excitation of CH and CH+ can be explained in the scenario of FUV irradiated outflow walls, where a cavity etched out by the outflow allows protostellar FUV photons to irradiate and heat the envelope at larger distances driving the chemical reactions that produce these molecules. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.Apppendices and Table 1 (pages 6 to 7) are only available in electronic form at http://www.aanda.org

Subject headings and genre

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  • Benz, A. O.Fachhochschule Nordwestschweiz,University of Applied Sciences and Arts Northwestern (FHNW) (author)
  • van Dishoeck, E. F.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Melchior, M.Fachhochschule Nordwestschweiz,University of Applied Sciences and Arts Northwestern (FHNW),Istituto nazionale di astrofisica (INAF),University of Waterloo,Universiteit Van Amsterdam,University of Amsterdam,Centre National d'Etudes Spatiales (CNES),Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN) (author)
  • Doty, S. D.Denison University (author)
  • van der Tak, F.Rijksuniversiteit Groningen,University of Groningen (author)
  • Stäuber, P.Eidgenössische Technische Hochschule Zürich (ETH),Swiss Federal Institute of Technology in Zürich (ETH) (author)
  • Wampfler, S. F.Universität Bern,University of Bern (author)
  • Dedes, C.Eidgenössische Technische Hochschule Zürich (ETH),Swiss Federal Institute of Technology in Zürich (ETH) (author)
  • Yıldız, U. A. (author)
  • Pagani, L.Sorbonne Université,Sorbonne University (author)
  • Giannini, T.Osservatorio Astronomico di Roma (author)
  • de Graauw, Th.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Whyborn, N.Cherenkov Telescope Array (author)
  • Teyssier, D.European Space Agency (ESA) (author)
  • Jellema, W.Netherlands Institute for Space Research (SRON) (author)
  • Shipman, R.Netherlands Institute for Space Research (SRON) (author)
  • Schieder, R.Universität zu Köln,University of Cologne (author)
  • Honingh, N.Universität zu Köln,University of Cologne (author)
  • Caux, E.Universite Paul Sabatier Toulouse III,Paul Sabatier University (author)
  • Bächtold, W.Eidgenössische Technische Hochschule Zürich (ETH),Swiss Federal Institute of Technology in Zürich (ETH) (author)
  • Csillaghy, A.Fachhochschule Nordwestschweiz,University of Applied Sciences and Arts Northwestern (FHNW) (author)
  • Monstein, C.Istituto Ricerche Solari Locarno (author)
  • Bachiller, R.Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN) (author)
  • Baudry, A.Université de Bordeaux,University of Bordeaux (author)
  • Benedettini, M. (author)
  • Bergin, E.University of Michigan (author)
  • Bjerkeli, Per,1977Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)gu97pebj (author)
  • Blake, G. A.California Institute of Technology (Caltech) (author)
  • Bontemps, S.Université de Bordeaux,University of Bordeaux (author)
  • Braine, J.Université de Bordeaux,University of Bordeaux (author)
  • Caselli, P.Max-Planck-Institut für extraterrestrische Physik,Max Planck Institute for Extraterrestrial Physics (author)
  • Cernicharo, J.CSIC - Instituto de Fisica Fundamental (IFF) (author)
  • Codella, C.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory,University of Waterloo,Institut de Radioastronomie Millimétrique (IRAM) (author)
  • Daniel, F.Université Grenoble Alpes,Grenoble Alpes University (author)
  • di Giorgio, A. M. (author)
  • Dominik, C. (author)
  • Encrenaz, P.Observatoire de Paris,Paris Observatory (author)
  • Fich, M. (author)
  • Fuente, A.Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN) (author)
  • Goicoechea, J. R.CSIC - Instituto de Fisica Fundamental (IFF) (author)
  • Helmich, F.Rijksuniversiteit Groningen,University of Groningen (author)
  • Herczeg, G. J.Peking University (author)
  • Herpin, F.Université de Bordeaux,University of Bordeaux (author)
  • Hogerheijde, M. R. (author)
  • Jacq, T.Université de Bordeaux,University of Bordeaux (author)
  • Johnstone, D.University of Victoria (author)
  • Jørgensen, J. K.Köpenhamns universitet,University of Copenhagen (author)
  • Kristensen, L. E.Niels Bohr Institute (author)
  • Larsson, BengtStockholms universitet,Institutionen för astronomi,Stockholm University(Swepub:su)bem (author)
  • Lis, D. (author)
  • Liseau, René,1949Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)liseau (author)
  • Marseille, M. (author)
  • McCoey, C. (author)
  • Melnick, G.Harvard-Smithsonian Center for Astrophysics (author)
  • Neufeld, D.Johns Hopkins University (author)
  • Nisini, B.Osservatorio Astronomico di Roma (author)
  • Olberg, Michael,1956Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)olberg (author)
  • Parise, B.Max-Planck Institut für Radioastronomie,Max-Planck Institute for Radio Astronomy (author)
  • Pearson, J. C. (author)
  • Plume, R.University of Calgary (author)
  • Risacher, C. (author)
  • Santiago-García, J.Instituto de Radioastronomía Milimétrica (author)
  • Saraceno, P.Istituto nazionale di astrofisica (INAF) (author)
  • Shipman, R. (author)
  • Tafalla, M. (author)
  • van Kempen, T. A.Netherlands Institute for Space Research (SRON) (author)
  • Visser, R.European Southern Observatory (ESO) (author)
  • Wyrowski, F.Max-Planck Institut für Radioastronomie,Max-Planck Institute for Radio Astronomy (author)
  • Eidgenössische Technische Hochschule Zürich (ETH)Fachhochschule Nordwestschweiz (creator_code:org_t)

Related titles

  • In:Astronomy and Astrophysics: EDP Sciences521, s. L44-0004-63611432-0746

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