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Comet 29P/Schwassmann-Wachmann Observed with the Herschel Space Observatory: Detection of Water Vapour and Dust Far-IR Thermal Emission
Bockelee-Morvan, Dominique; Biver, N.; Crovisier, J. et al.
2010 • In Bulletin of the American Astronomical Society, 42, p. 946
 

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Abstract :
[en] The distant comet 29P/Schwassmann-Wachmann was observed with the HIFI, PACS and SPIRE instruments aboard the Herschel Space Observatory, as part of the guaranteed time key programme "Water and related chemistry in the Solar System" (KP-GT HssO). Supporting observations of the 230 GHz CO line were carried out with the IRAM 30-m telescope. The HIFI observations of the 557 GHz H2O line were performed on 19.05 April 2010, about 2 days after a major outburst, and on 11.02 May 2010, when 29P was in a more quiescent phase. H2O was detected on both dates with a production rate corresponding to about 1/10th the CO production, assuming near-nucleus production. The H2O line shape is consistent with release of water vapour from icy grains. PACS and SPIRE imaging data from 70 to 500 micrometers were acquired mid-June 2010 when the comet was in a quiescent phase. The continuum emission detected in the 70-μm and 160-μm PACS images is weakly extended with respect to the PSF, suggesting a major contribution from the nucleus or from slowly moving large grains.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Bockelee-Morvan, Dominique;  LESIA, Observatoire de Paris, France
Biver, N.;  LESIA, Observatoire de Paris, France
Crovisier, J.;  LESIA, Observatoire de Paris, France
de Val-Borro, M.;  Max-Planck-Institut für Sonnensystemforschung, Germany
Fulton, T.;  Blue Sky Spectroscopy Inc, Canada
Hartogh, P.;  Max-Planck-Institut für Sonnensystemforschung, Germany
Hutsemekers, Damien ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Jarchow, C.;  Max-Planck-Institut für Sonnensystemforschung, Germany
Jehin, Emmanuel  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Kidger, M.;  ESAC, European Space Agency, Spain
Kueppers, M.;  ESAC, European Space Agency, Spain
Lellouch, Emmanuel;  LESIA, Observatoire de Paris, France
Lis, D.;  CALTECH
Manfroid, Jean  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Moreno, R.;  LESIA, Observatoire de Paris, France
Rengel, M.;  Max-Planck-Institut für Sonnensystemforschung, Germany
Swinyard, B. C.;  STFC Rutherford Appleton Laboratory, United Kingdom
Szutowicz, S.;  Space Research Centre PAS, Poland
Vandenbussche, B.;  Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium
HssO, Team
More authors (10 more) Less
Language :
English
Title :
Comet 29P/Schwassmann-Wachmann Observed with the Herschel Space Observatory: Detection of Water Vapour and Dust Far-IR Thermal Emission
Publication date :
01 October 2010
Audience :
International
Journal title :
Bulletin of the American Astronomical Society
ISSN :
0002-7537
eISSN :
2330-9458
Publisher :
American Astronomical Society, New York, United States - New York
Volume :
42
Pages :
946

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