Other
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.3503h&link_type=abstract
American Astronomical Society, DPS meeting #42, #35.03; Bulletin of the American Astronomical Society, Vol. 42, p.1016
Other
Scientific paper
The Herschel guaranteed time key program "Water and related chemistry in the solar system" also known as HssO aims at determining the distribution, the evolution and the origin of water in Mars, the Outer Planets and comets, using the three Herschel instruments HIFI, PACS and SPIRE. It addresses the broad topic of water and its isotopologues in planetary and cometary atmospheres. The nature of cometary activity and the thermodynamics of cometary comae is subject of investigations by studying water excitation in a sample of comets. To date C/2006 W3 (Christensen), C/2008 Q3 (Garradd), 81P/Wild 2, 29P/Schwassmann-Wachmann 1 and 10P/Tempel 2 were observed. A brief overview on the results will be given. Mars has been observed a couple of times between Ls = 340° and Ls = 114°. Spectral scans between 0.45 and 5.26 THz as well as dedicated line observations of water and carbon monoxide and its isotopes, hydrogen chloride, hydrogen peroxide and molecular oxygen have been performed and some results will be presented. Identifying the external source(s) of water in the stratospheres of the Outer Planets and Titan by detecting its vertical profiles and for Jupiter and Saturn by mapping observations as well as the detection of new molecules, determining higher accuracies on known molecules and an unexpected detection in the Saturn system will be other important topics of this talk.
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