Upper limits for PH3 and H2S in Titan's Atmosphere from Cassini CIRS
arXiv:1303.3023 · doi:10.1016/j.icarus.2013.02.024
Abstract
We have searched for the presence of simple P and S-bearing molecules in Titan's atmosphere, by looking for the characteristic signatures of phosphine and hydrogen sulfide in infrared spectra obtained by Cassini CIRS. As a result we have placed the first upper limits on the stratospheric abundances, which are 1 ppb (PH3) and 330 ppb (H2S), at the 2-sigma significance level.
12 pages text, 1 table, 2 figures