Mapping water in Jupiter with Herschel/HIFI

Astronomy and Astrophysics – Astronomy

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Scientific paper

A major discovery of ISO was the detection of water in the upper atmospheres of the four giant planets and Titan (Feuchtgruber et al, 1997; Coustenis et al, 1998), implying the existence of external sources of water. This oxygen supply, which manifests itself also through the presence of CO2 and CO in these atmospheres, may have several sources: (i) a permanent flux from interplanetary dust particles produced from asteroid collisions and from comet activity (Prather et al,1978), (ii) local sources from planetary environments (rings, satellites) (Strobel and Yung, 1979; Prangé et al, 2006), (iii) cometary ``Shoemaker-Levy 9 (SL9) type'’ impacts (Lellouch et al, 1995). Disentangling the various sources at Jupiter is a key objective of the Herschel Space Observatory key program HssO (Hartogh et al, 2009).
Herschel/HIFI observed H2O in Jupiter at 1669 GHz in a 5x5 point map on July 7, 2010. From this observation, we will present and discuss the search for latitudinal variability of H2O in Jupiter.
Acknowledgement: Research by T. Cavalié was supported by the Fondation des Amis des Sciences.
References:
Coustenis et al, A&A 336,L85-L89.
Feuchtgruber et al, 1997. Nature 389, 159-162.
Hartogh et al, 2009. Planet. Space Sci. 57, 1596-1606.
Lellouch et al, 1995. Nature 373, 592-595.
Prangé et al, 2006. Icarus 180, 379-392.
Prather, 1978. ApJ 223, 1072-1081.
Strobel & Yung, 1979. Icarus 37, 256-263.

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