Lecavelier des Etangs, A.A.Lecavelier des EtangsHébrard, G.G.HébrardBlandin, S.S.BlandinCassier, J.J.CassierDeeg, H. J.H. J.DeegBONOMO, ALDO STEFANOALDO STEFANOBONOMOBouchy, F.F.BouchyDésert, J. -M.J. -M.DésertEhrenreich, D.D.EhrenreichDeleuil, M.M.DeleuilDíaz, R. F.R. F.DíazMoutou, C.C.MoutouVidal-Madjar, A.A.Vidal-Madjar2020-12-042020-12-0420170004-6361http://hdl.handle.net/20.500.12386/28699Using Spitzer photometry at 4.5 microns, we search for rings and satellites around the long period transiting planet CoRoT-9b. We observed two transits in 2010 and 2011. From their non-detection, we derive upper limits on the plausible physical characteristics of these objects in the planet environment. We show that a satellite larger than about 2.5 Earth radii is excluded at 3σ for a wide range of elongations at the two epochs of observations. Combining the two observations, we conclude that rings are excluded for a wide variety of sizes and inclination. We find that for a ring extending up to the Roche limit, its inclination angle from the edge-on configuration as seen from the Earth must be lower than 13° in the case of silicate composition and lower than 3° in the case of material with water ice density.STAMPAenArticle10.1051/0004-6361/2017305542-s2.0-85025438916000406619100112https://www.aanda.org/articles/aa/full_html/2017/07/aa30554-17/aa30554-17.html2017A&A...603A.115LFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_6 Stars and stellar systems