Cavalié, T.[Max-Planck-Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany]
Lis, D. C.[California Institute of Technology, Pasadena, CA 91125, USA]
Błęcka, M. I.[Space Research Centre, Polish Academy of Sciences, Warsaw, Poland]
Banaszkiewicz, M.[Space Research Centre, Polish Academy of Sciences, Warsaw, Poland]
Bockelée-Morvan, D.[LESIA, Observatoire de Paris, 5 place Jules Janssen, 92195 Meudon, France]
Crovisier, J.[LESIA, Observatoire de Paris, 5 place Jules Janssen, 92195 Meudon, France]
Encrenaz, T.[LESIA, Observatoire de Paris, 5 place Jules Janssen, 92195 Meudon, France]
Küppers, M.[Rosetta Science Operations Centre, European Space Astronomy Centre, European Space Agency, Spain]
Lara, L*-M[Instituto de Astrofísica de Andalucía (CSIC), Spain]
Szutowicz, S.[Space Research Centre, Polish Academy of Sciences, Warsaw, Poland]
Vandenbussche, B.[Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium]
Bensch, F.[DLR, German Aerospace Centre, Bonn-Oberkassel, Germany]
Bergin, E. A.[Astronomy Department, University of Michigan, USA]
Billebaud, F.[Université de Bordeaux, Laboratoire d'Astrophysique de Bordeaux, France]
Biver, N.[LESIA, Observatoire de Paris, 5 place Jules Janssen, 92195 Meudon, France]
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]
Feuchtgruber, H.[Max-Planck-Institut für extraterrestrische Physik, Garching bei München, Germany]
de Graauw, T.[SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD, Groningen, The Netherlands; Leiden Observatory, University of Leiden, The Netherlands; Atacama Large Millimeter/Submillimeter Array, Joint ALMA Office, Santiago, Chile]
Jehin, Emmanuel[Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image]
Kidger, M.[Science Centre, European Space Astronomy Centre, ESA, PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain]
Lorente, R.[Science Centre, European Space Astronomy Centre, ESA, PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain]
Naylor, D. A.[Department of Physics and Astronomy, University of Lethbridge, Canada]
Portyankina, G.[Physikalisches Institut, University of Bern, Switzerland]
Sánchez-Portal, M.[Science Centre, European Space Astronomy Centre, ESA, PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain]
Schieder, R.[KOSMA, I. Physik. Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany]
[en] planets and satellites: atmospheres ; radiative transfer ; submillimeter: general ; molecular processes
[en] We report on an initial analysis of Herschel/HIFI observations of hydrogen chloride (HCl), hydrogen peroxide (H[SUB]2[/SUB]O[SUB]2[/SUB]), and molecular oxygen (O[SUB]2[/SUB]) in the Martian atmosphere performed on 13 and 16 April 2010 (L[SUB]s[/SUB] ~ 77°). We derived a constant volume mixing ratio of 1400 ± 120 ppm for O[SUB]2[/SUB] and determined upper limits of 200 ppt for HCl and 2 ppb for H[SUB]2[/SUB]O[SUB]2[/SUB]. Radiative transfer model calculations indicate that the vertical profile of O[SUB]2[/SUB] may not be constant. Photochemical models determine the lowest values of H[SUB]2[/SUB]O[SUB]2[/SUB] to be around L[SUB]s[/SUB] ~ 75° but overestimate the volume mixing ratio compared to our measurements. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
[Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image]
