MIGLIORINI, AlessandraAlessandraMIGLIORINISnels, M.M.SnelsGérard, J. -C.J. -C.GérardSoret, L.L.SoretPICCIONI, GIUSEPPEGIUSEPPEPICCIONIDrossart, P.P.Drossart2020-09-292020-09-2920180019-1035http://hdl.handle.net/20.500.12386/27504The temperature of the night side of Venus at about 95 km has been determined by using spectral features of the hydroxyl airglow emission around 3 μm, recorded from July 2006 to July 2008 by VIRTIS onboard Venus Express. The retrieved temperatures vary from 145.5 to about 198.1 K with an average value of 176.3 ± 14.3 K and are in good agreement with previous ground-based and space observations. The variability with respect to latitude and local time has been studied, showing a minimum of temperature at equatorial latitudes, while temperature values increase toward mid latitudes with a local maximum at about 35°N. The present work provides an independent contribution to the temperature estimation in the transition region between the Venus upper mesosphere and the lower thermosphere, by using the OH emission as a thermometer, following the technique previously applied to the high-resolution O<SUB>2</SUB>(a<SUP>1</SUP>∆<SUB>g</SUB>) airglow emissions observed from ground.STAMPAenArticle10.1016/j.icarus.2017.09.0262-s2.0-85032636345000414507300027https://www.sciencedirect.com/science/article/pii/S0019103517303937?via%3Dihub2018Icar..300..386MFIS/05 - ASTRONOMIA E ASTROFISICA