Summary: Plar~rt. Space SC;., Vol. 41. No. 6, pp. 4414151. 1993
Printed in Great Britain.
Pergamon Press Ltd
Tentative identification of formaldehyde in the Martian atmosphere
0. 1. Korablev, ' M. Ackerman,' V. A. Krasnopolsky,' V. 1. Moroz,' C. Muller,' A. V. Rodin' and S. K. Atreya'
`Space Research Institute. Russian Academy of Sciences. Profsoyusnaya 84/32. 117810 Moscow GSP-7, Russia
`Belgian lnstitutc for Space Acronomy. Brussels. Belgium
`Dcpartmcnt of Atmospheric, Ocean and Space Sciences. University of Michigan. Ann Arbor, MI 48109-2143. U.S.A.
Rcccivcd IO Dcccmbcr 1992: rcviscd 13 April 1993 : acccptcd I3 May 1993
Abstract. Solar occultation observations of the Martian
atmosphere near the limb of the planet were performed
during the P/whos mission by means of the Auguste
infrared spectrometer in the ranges 2707-3740 and
5391-5272 cm ' with a resolving power of 5 1300. The
spectra exhibit features at 2710 and 1730 crn~-' which
have not been identified previously. After applying a
set of corrections to the data and examining the spectra
of various molecules, we are led to conclude that the
best candidate for the above-mentioned features is for-