Optical observations of water in Leonid meteor trails

摘要: [1] Two simultaneous filtered images (589 and 423 nm) of a meteor trail were recorded during the 2002 Leonid storm. The first image shows Na atoms second Ca Fe signals at altitudes much higher than can give rise to ablation metals, in agreement with other observations high altitude visible trails [Spurný et al., 2000a; Spurný 2000b]. Ablation models [McNeil 1998] analysis history meteoroids [McNaught Asher, 1999] support conclusion that emissions are due H 2 O + α,β,γ formed through decomposition hyperthermal collision between from meteoroid ice [Kresak, 1973] atmospheric N [Dressier 1992].