Upper limits for PH3 and H2S in Titan's Atmosphere from Cassini CIRS

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

References in corpus (2)

• Titan's Prolific Propane: The Cassini CIRS Perspective
• Upper limits for undetected trace species in the stratosphere of Titan

Cited by in corpus (7)

• Titan's Atmosphere and Climate
• ExoMol line lists VII: The rotation-vibration spectrum of phosphine up to 1500 K
• The Composition and Chemistry of Titan's Atmosphere
• Detection of Cyclopropenylidene on Titan with ALMA
• Cassini Composite Infrared Spectrometer (CIRS) Observations of Titan 2004--2017
• Open Questions and Future Directions in Titan Science
• An EUV Non-Linear Optics Based Approach to Study the Photochemical Processes of Titanś Atmosphere