PT Journal
AU Hartogh, P
   Jarchow, C
   Lellouch, E
   de Val-Borro, M
   Rengel, M
   Moreno, R
   Medvedev, AS
   Sagawa, H
   Swinyard, BM
   Cavalié, T
   Lis, DC
   BłÄ™cka, MI
   Banaszkiewicz, M
   Bockelée-Morvan, D
   Crovisier, J
   Encrenaz, T
   Küppers, M
   Lara, L
   Szutowicz, S
   Vandenbussche, B
   Bensch, F
   Bergin, EA
   Billebaud, F
   Biver, N
   Blake, GA
   Blommaert, JADL
   Cernicharo, J
   Decin, L
   Encrenaz, P
   Feuchtgruber, H
   Fulton, T
   de Graauw, T
   Jehin, E
   Kidger, M
   Lorente, R
   Naylor, DA
   Portyankina, G
   Sánchez-Portal, M
   Schieder, R
   Sidher, S
   Thomas, N
   Verdugo, E
   Waelkens, C
   Whyborn, N
   Teyssier, D
   Helmich, F
   Roelfsema, P
   Stutzki, J
   LeDuc, HG
   Stern, JA
TI Herschel/HIFI observations of Mars: First detection of O[sub:2] at submillimetre wavelengths and upper limits on HCl and H[sub:2]O[sub:2]
SO Astron. Astrophys.
PY 2010
BP L49
VL 521
DI 10.1051/0004-6361/201015160
DE HEB mixer applications; HIFI; Herschel; planets and satellites: atmospheres / radiative transfer / submillimeter: general / molecular processes
AB 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.
ER