Title: Herschel/HIFI observations of Mars: First detection of O-2 at submillimetre wavelengths and upper limits on HCl and H2O2
Authors: Hartogh, P ×
Jarchow, C
Lellouch, E
de Val-Borro, M
Rengel, M
Moreno, R
Medvedev, A. S
Sagawa, H
Swinyard, B. M
Cavalie, T
Lis, D. C
Blecka, M. I
Banaszkiewicz, M
Bockelee-Morvan, D
Crovisier, J
Encrenaz, T
Kueppers, M
Lara, L. -M
Szutowicz, S
Vandenbussche, Bart
Bensch, F
Bergin, E. A
Billebaud, F
Biver, N
Blake, G. A
Blommaert, Joris
Cernicharo, J
Decin, Leen
Encrenaz, P
Feuchtgruber, H
Fulton, T
de Graauw, T
Jehin, E
Kidger, M
Lorente, R
Naylor, D. A
Portyankina, G
Sanchez-Portal, M
Schieder, R
Sidher, S
Thomas, N
Verdugo, E
Waelkens, Christoffel
Whyborn, N
Teyssier, D
Helmich, F
Roelfsema, P
Stutzki, J
LeDuc, H. G
Stern, J. A #
Issue Date: Oct-2010
Publisher: Springer-Verlag
Series Title: Astronomy & Astrophysics vol:521 pages:1-5
Article number: L49
Abstract: We report on an initial analysis of Herschel/HIFI observations of hydrogen chloride (HCl), hydrogen peroxide (H2O2), and molecular oxygen (O-2) in the Martian atmosphere performed on 13 and 16 April 2010 (L-s similar to 77 degrees). We derived a constant volume mixing ratio of 1400 +/- 120 ppm for O-2 and determined upper limits of 200 ppt for HCl and 2 ppb for H2O2. Radiative transfer model calculations indicate that the vertical profile of O-2 may not be constant. Photochemical models determine the lowest values of H2O2 to be around L-s similar to 75 degrees but overestimate the volume mixing ratio compared to our measurements.
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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