Herschel /HIFI observations of Mars: First detection of O 2 at submillimetre wavelengths and upper limits on HCl and H 2 O 2
Year: 2010
Type: article
Abstract: We report on an initial analysis of Herschel/HIFI observations of hydrogen chloride (HCl), hydrogen peroxide (H2O2), and molecular oxygen (O2) in the Martian atmosphere performed on 13 and 16 April 2010 (Ls ~ 77°). We derived a constant volume mixing ratio of 1400 ± 120 ppm for O2 and determined upper limits of 200 ppt for HCl and 2 ppb for H2O2. Radiative transfer model calculations indicate that the vertical profile of O2 may not be constant. Photochemical models determine the lowest values of H2O2 to be around Ls ~ 75° but overestimate the volume mixing ratio compared to our measurements.
Source: Astronomy and Astrophysics
Authors: P. Hartogh, C. Jarchow, E. Lellouch, M. de Val-Borro, M. Rengel, R. Moreno, A. S. Medvedev, H. Sagawa, B. M. Swinyard, T. Cavalié, D. C. Lis, M. I. Błęcka, M. Banaszkiewicz, D. Bockelée-Morvan, J. Crovisier, T. Encrenaz, M. Küppers, L.-M. Lara, S. Szutowicz, B. Vandenbussche, F. Bensch, E. A. Bergin, F. Billebaud, N. Biver, G. A. Blake, J. A. D. L. Blommaert, J. Cernicharo, L. Decin, P. Encrenaz, H. Feuchtgruber, T. Fulton, T. de Graauw, E. Jehin, M. Kidger, R. Lorente, D. A. Naylor, G. Portyankina, M. Sánchez-Portal, R. Schieder, S. Sidher, N. Thomas, E. Verdugo, C. Waelkens, N. Whyborn, D. Teyssier, F. Helmich, P. Roelfsema, J. Stutzki, H. G. LeDuc, J. A. Stern
Institutions: Max Planck Institute for Solar System Research, Observatoire de Paris, Laboratoire d’études spatiales et d’instrumentation en astrophysique, National Institute of Information and Communications Technology, Rutherford Appleton Laboratory, California Institute of Technology, Centrum Badań Kosmicznych, Polish Academy of Sciences, European Space Agency, European Space Astronomy Centre, Instituto de Astrofísica de Andalucía, KU Leuven, Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR), University of Michigan, Université de Bordeaux, Laboratoire d'Astrophysique de Bordeaux, Consejo Superior de Investigaciones Científicas, Centro de Astrobiología, University of Amsterdam, Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères, Max Planck Institute for Extraterrestrial Physics, Leiden University, Atacama Large Millimeter Submillimeter Array, Leiden Observatory, Space Research Organisation Netherlands, University of Liège, University of Lethbridge, University of Bern, University of Cologne, Jet Propulsion Laboratory
Language: English
Subfield: Space and Planetary Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2112371525