Titan atmosphere Archives - Astrobiology

An illustration of the adjusted telluric models for the solar and Titan spectra, where a 10% reduction from the best-fit model is applied to the solar spectrum and a 10% increase from the best-fit model is applied to the Titan spectrum, as described in Section 2.2. ‘o’ and ‘x’ markers indicate uncontaminated telluric lines used to estimate these adjustments. ‘o’ markers represent lines with expected strength, while ‘x’ markers denote lines with anomalous strength. The center of each ‘o’ or ‘x’ corresponds to the peak of the adjusted telluric model. The four regions shown were selected to clearly demonstrate both marker scenarios and to span a broad wavelength range relevant to the study. -- astro-ph.IM

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Icy Worlds, Imaging & Spectroscopy, Status Report, Titan

Identification of Likely Methane Absorption Features in the Optical Spectra of Titan

by Keith CowingSeptember 9, 2025September 9, 2025

The optical spectra of Titan reveal a rich set of absorption features, most of which are likely associated with methane (CH4).