Article (Scientific journals)
HIFI observations of water in the atmosphere of comet C/2008 Q3 (Garradd)
Hartogh, P.; Crovisier, J.; de Val-Borro, M. et al.
2010In Astronomy and Astrophysics, 518 (Letters), p. 150, pp. 1-5
Peer Reviewed verified by ORBi
 

Files


Full Text
2010A&A...518L.150H.pdf
Publisher postprint (330.4 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
comets: individual: C/2008 Q3; radio lines: general; submillimeter: general; techniques: spectroscopic
Abstract :
[en] High-resolution far-infrared and sub-millimetre spectroscopy of water lines is an important tool to understand the physical and chemical properties of cometary atmospheres. We present observations of several rotational ortho- and para-water transitions in comet C/2008 Q3 (Garradd) performed with HIFI on Herschel. These observations have provided the first detection of the 2[SUB]12[/SUB]-1[SUB]01[/SUB] (1669 GHz) ortho and 1[SUB]11[/SUB]-0[SUB]00[/SUB] (1113 GHz) para transitions of water in a cometary spectrum. In addition, the ground-state transition 1[SUB]10[/SUB]-1[SUB]01[/SUB] at 557 GHz is detected and mapped. By detecting several water lines quasi-simultaneously and mapping their emission we can constrain the excitation parameters in the coma. Synthetic line profiles are computed using excitation models which include excitation by collisions, solar infrared radiation, and radiation trapping. We obtain the gas kinetic temperature, constrain the electron density profile, and estimate the coma expansion velocity by analyzing the map and line shapes. We derive water production rates of 1.7-2.8 × 10[SUP]28[/SUP] s[SUP]-1[/SUP] over the range r[SUB]h[/SUB] = 1.83-1.85 AU. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.Figure 5 is only available in electronic form at <A href="http://www.aanda.org">http://www.aanda.org</A>
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Hartogh, P.;  Max-Planck-Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany
Crovisier, J.;  LESIA, Observatoire de Paris, 5 place Jules Janssen, 92195 Meudon, France
de Val-Borro, M.;  Max-Planck-Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany
Bockelée-Morvan, D.;  LESIA, Observatoire de Paris, 5 place Jules Janssen, 92195 Meudon, France
Biver, N.;  LESIA, Observatoire de Paris, 5 place Jules Janssen, 92195 Meudon, France
Lis, D. C.;  California Institute of Technology, Pasadena, CA 91125, USA
Moreno, R.;  LESIA, Observatoire de Paris, 5 place Jules Janssen, 92195 Meudon, France
Jarchow, C.;  Max-Planck-Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany
Rengel, M.;  Max-Planck-Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany
Emprechtinger, M.;  California Institute of Technology, Pasadena, CA 91125, USA
Szutowicz, S.;  Space Research Centre, Polish Academy of Sciences, Warsaw, Poland
Banaszkiewicz, M.;  Space Research Centre, Polish Academy of Sciences, Warsaw, Poland
Bensch, F.;  DLR, German Aerospace Centre, Bonn-Oberkassel, Germany
Blecka, M. I.;  Space Research Centre, Polish Academy of Sciences, Warsaw, Poland
Cavalié, T.;  Max-Planck-Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany
Encrenaz, T.;  LESIA, Observatoire de Paris, 5 place Jules Janssen, 92195 Meudon, France
Jehin, Emmanuel  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Küppers, M.;  Rosetta Science Operations Centre, European Space Astronomy Centre, European Space Agency, Spain
Lara, L*-M;  Instituto de Astrofísica de Andalucía (CSIC), Spain
Lellouch, Emmanuel;  LESIA, Observatoire de Paris, 5 place Jules Janssen, 92195 Meudon, France
Swinyard, B. M.;  Space Science & Technology Department, Rutherford Appleton Laboratory, UK
Vandenbussche, B.;  Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium
Bergin, E. A.;  Astronomy Department, University of Michigan, USA
Blake, G. A.;  California Institute of Technology, Pasadena, CA 91125, USA
Blommaert, J A D L;  Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium
Cernicharo, J.;  Laboratory of Molecular Astrophysics, CAB-CSIC, INTA, Spain
Decin, L.;  Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium ; Sterrenkundig Instituut Anton Pannekoek, University of Amsterdam, Science Park 904, 1098 Amsterdam, The Netherlands
Encrenaz, P.;  LERMA, Observatoire de Paris, France
de Graauw, T.;  SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD, Groningen, The Netherlands ; Leiden Observatory, University of Leiden, The Netherlands ; Joint ALMA Observatory, Chile
Hutsemekers, Damien ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Kidger, M.;  Herschel Science Centre, European Space Astronomy Centre, European Space Agency, Spain
Manfroid, Jean  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Medvedev, A. S.;  Max-Planck-Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany
Naylor, D. A.;  Department of Physics and Astronomy, University of Lethbridge, Canada
Schieder, R.;  1st Physics Institute, University of Cologne, Germany
Thomas, N.
Waelkens, C.;  Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium
Roelfsema, P. R.;  SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD, Groningen, The Netherlands
Dieleman, P.;  SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD, Groningen, The Netherlands
Güsten, R.;  Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
Klein, T.;  Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
Kasemann, C.;  Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
Caris, M.;  Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
Olberg, M.;  Chalmers University of Technology, 412 96 Göteborg, Sweden ; SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD, Groningen, The Netherlands
Benz, A. O.;  Institute of Astronomy, ETH Zürich, 8093 Zürich, Switzerland
More authors (35 more) Less
Language :
English
Title :
HIFI observations of water in the atmosphere of comet C/2008 Q3 (Garradd)
Publication date :
01 July 2010
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
518
Issue :
Letters
Pages :
150, pp. 1-5
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
http://de.arxiv.org/abs/1005.2969
Available on ORBi :
since 04 January 2011

Statistics


Number of views
71 (4 by ULiège)
Number of downloads
1 (1 by ULiège)

Scopus citations®
 
33
Scopus citations®
without self-citations
7
OpenCitations
 
29

Bibliography


Similar publications



Contact ORBi