monodeuterated methane Archives - Astrobiology

Integrated emission (or ‘moment 0’) maps of Titan’s CH3D (A), CH3CN (B), and continuum (C) spectra. Panels (A) and (B) correspond to the emission integrated over the spectral transitions shown in Fig. 1. The synthesized ALMA beam size (FWHM of the ALMA PSF) is shown as the hatched ellipse in the lower left; Titan’s solid surface, latitude and longitudes are shown (solid and dashed blue lines). Contours are in increments of 1σ (A) and 10σ (B). Spectra were extracted for radiative transfer modeling at 20◦ latitude bins as displayed on the continuum emission map in panel C (yellow squares), and the corresponding area representing the ALMA beam foot-print used to generate synthetic spectra from these individual regions on Titan’s limb are shown (yellow ellipses). Altitudes of 150 km and 1200 km above Titan’s surface are denoted by dotted and dashed blue circles, respectively, on the continuum map. -- astro-ph.EP

Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Habitable Zones, Imaging & Spectroscopy, Status Report, Titan

Observations of Titan’s Stratosphere During Northern Summer: Temperatures, CH3CN and CH3D Abundances

by Keith CowingMay 7, 2024May 7, 2024

Titan’s atmospheric composition and dynamical state have previously been studied over numerous epochs by both ground- and space-based facilities.