Carbonyl sulfide Archives

IR difference spectra obtained upon 2 keV electron irradiation of a 13C 18O:CS2 ice sample at 7 K (Exp. 7). IR band assignments are indicated for the initial ice components (black), and ice chemistry products (blue), including the OCS isotopologs (red). -- astro-ph.GA

Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Icy Worlds, Imaging & Spectroscopy, Interstellar, Status Report

Ice Origins of OCS and Chemistry of CS2-bearing Ice Mantles

by Keith CowingOctober 11, 2024

Understanding the formation of carbonyl sulfide (OCS) in interstellar ices is key to constrain the sulfur chemistry in the interstellar medium (ISM), since it is the only ice S-bearing molecule […]

Infrared data that confirms the formation of OCS from CO, H2S, and H atoms. Panel a): Spectrum collected after deposition of CO+H2S+H (experiment 1, red) together with the control experiment without H atoms (experiment 2, grey) and the isotope-labeled experiment with 13C 18O (experiment 3, blue). Small features assigned to 13CO and 12CO are due to minor contaminations from the gas bottle (respectively, ∼ 4% and ∼ 2% with respect to 13C 18O). Panel b): Infrared spectra acquired during TPD following the deposition of experiment 1. The spectrum in dark red (upper) is taken at ∼70 K, and the one in light red (lower) is taken at ∼100 K. Panel c): Same as panel b), but for the isotope-labeled experiment. In all panels only the relevant frequency range is shown and the spectra are offset for clarity. -- astro-ph.GA

Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Status Report

Formation Of Carbonyl Sulfide (OCS) via SH Radicals In Interstellar CO-rich Ice Under Dense Cloud Conditions

by Keith CowingAugust 9, 2024August 9, 2024

Carbonyl sulfide (OCS) is widely observed in the gas phase towards star-forming regions and was the first of the only two sulfur-bearing species detected in interstellar ices so far. However, […]

Carbonyl sulfide

Ice Origins of OCS and Chemistry of CS2-bearing Ice Mantles

Formation Of Carbonyl Sulfide (OCS) via SH Radicals In Interstellar CO-rich Ice Under Dense Cloud Conditions

Sea Ice As An Origin Of Life Location For Hycean And Ocean Worlds

Viruses, Proviruses and Satellites from Asgard Archaea Enrichments Reveal Complex Microbial Interactions

Mars Rover Curiosity’s Hand Lens Imager (MAHLI) Calibration

Carbon and Sulfur Isotopes of Microfossils and Pyrites from Neoarchean Cherts: Microbial Diversity in an Ancient Deep-Marine Environment

Auroral Belts As Magnetically Localized Reactors For Prebiotic Chemistry On Early Earth