Author/Authors :
Migliorini، نويسنده , , A. and Altieri، نويسنده , , F. and Zasova، نويسنده , , L. and Piccioni، نويسنده , , G. and Bellucci، نويسنده , , G. and Cardes?n Moinelo، نويسنده , , A. and Drossart، نويسنده , , P. and D’Aversa، نويسنده , , E. and Carrozzo، نويسنده , , F.G. and Gondet، نويسنده , , B. and Bibring، نويسنده , , J.-P.، نويسنده ,
Abstract :
Imaging spectrometers are highly effective instruments for investigation of planetary atmospheres. They present the advantage of coupling the compositional information to the spatial distribution, allowing simultaneous study of chemistry and dynamics in the atmospheres of Venus and Mars. In this work, we summarize recent results about the O2(a1Δg) night and day glows, respectively obtained by VIRTIS/Venus Express and OMEGA/Mars Express, the imaging spectrometers currently in orbit around Venus and Mars. The case of the O2(a1Δg – X3Σg−) IR emission at 1.27 μm on the night side of Venus and the day side of Mars is analyzed, pointing out dynamical aspects of these planets, like the detection of gravity waves in their atmospheres. The monitoring of seasonal and daily airglow variations provides hints about the photochemistry on these planets.
Keywords :
Venus , Mars , Comparative planetology , O2 airglow
