Issue |
A&A
Volume 521, October 2010
Herschel/HIFI: first science highlights
|
|
---|---|---|
Article Number | L48 | |
Number of page(s) | 5 | |
Section | Letters | |
DOI | https://doi.org/10.1051/0004-6361/201015159 | |
Published online | 01 October 2010 |
Letter to the Editor
First results on Martian carbon monoxide from Herschel/HIFI observations*
1
Max-Planck-Institut für Sonnensystemforschung, 37191
Katlenburg-Lindau, Germany
2
Space Research Centre, Polish Academy of Sciences, Warsaw,
Poland
3
Environmental Sensing & Network Group, NICT,
4-2-1 Nukui-kita, Koganei, Tokyo 184-8795, Japan
4
LESIA, Observatoire de Paris, 5 place Jules Janssen, 92195
Meudon, France
5
STFC Rutherford Appleton Laboratory, Harwell Innovation
Campus, Didcot, OX11 0QX, UK
6
California Institute of Technology, Pasadena, CA 91125, USA
7
Rosetta Science Operations Centre, European Space Astronomy
Centre, European Space Agency, Spain
8
Instituto de Astrofísica de Andalucía (CSIC), Spain
9
Instituut voor Sterrenkunde, Katholieke Universiteit Leuven,
Belgium
10
DLR, German Aerospace Centre, Bonn-Oberkassel, Germany
11
Astronomy Department, University of Michigan, USA
12
Université de Bordeaux, Laboratoire d'Astrophysique de
Bordeaux, France
13
Laboratory of Molecular Astrophysics, CAB-CSIC, INTA, Spain
14
Sterrenkundig Instituut Anton Pannekoek, University of Amsterdam,
Science Park 904, 1098 Amsterdam, The Netherlands
15
LERMA, Observatoire de Paris, France
16
Max-Planck-Institut für extraterrestrische Physik,
Giessenbachstraße, 85748 Garching, Germany
17
Bluesky Spectroscopy, Lethbridge, Canada
18
SRON Netherlands Institute for Space Research, Landleven 12, 9747
AD, Groningen, The Netherlands
19
Leiden Observatory, University of Leiden, The Netherlands
20
Joint ALMA Observatory, Chile
21
Institute d'Astrophysique et de Geophysique, Université de Liège,
Belgium
22
Science Centre, European Space Astronomy
Centre, European Space Agency, Spain
23
Department of Physics and Astronomy, University of Lethbridge,
Canada
24
Physikalisches Institut, University of Bern, Switzerland
25
KOSMA, I. Physik. Institut, Universitat zu Köln, Zülpicher Str.
77, D 50937 Köln, Germany
26
Osservatorio Astrofisico di Arcetri-INAF, Largo E. Fermi 5,
50100 Florence, Italy
27
Jet Propulsion Laboratory, Caltech, Pasadena, CA 91109,
USA
28
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D53121
Bonn Germany
Received:
5
June
2010
Accepted:
6
July
2010
We report on the initial analysis of Herschel/HIFI carbon monoxide (CO) observations of the Martian atmosphere performed between 11 and 16 April 2010. We selected the (7–6) rotational transitions of the isotopes 13CO at 771 GHz and C18O and 768 GHz in order to retrieve the mean vertical profile of temperature and the mean volume mixing ratio of carbon monoxide. The derived temperature profile agrees within less than 5 K with general circulation model (GCM) predictions up to an altitude of 45 km, however, show about 12–15 K lower values at 60 km. The CO mixing ratio was determined as 980 ± 150 ppm, in agreement with the 900 ppm derived from Herschel/SPIRE observations in November 2009.
Key words: planets and satellites: atmospheres / molecular processes / radiative transfer / submillimeter: general
© ESO, 2010
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