The study of complex organic molecules containing thiol (−SH) groups is essential in interstellar media because −SH plays an important role in the polymerization of amino acids (R-CH(NH2)-COOH).
interstellar medium
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Imaging & Spectroscopy, Interstellar, Status Report
Evolution of Chemistry in the Envelope of HOt CorinoS (ECHOS) II. The puzzling Chemistry of Isomers as Revealed by the HNCS/HSCN Ratio
The observational detection of some metastable isomers in the interstellar medium with abundances comparable to those of the most stable isomer, or even when the stable isomer is not detected, […]
Posted inAstrochemistry, Astronomy & Telescopes, Imaging & Spectroscopy, Interstellar, Mapping, Geodesy, Cartography, Bathymetry, Status Report, Stellar Cartography
Dust Extinction-curve Variation In The Translucent Interstellar Medium Is Driven By PAH Growth
The first all-sky, high-resolution, 3D map of the optical extinction curve of the Milky Way (Zhang & Green 2024) revealed an unexpected steepening of the extinction curve in the moderate-density, […]
Posted inAstrochemistry, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Status Report
Rotationally Inelastic Rate Coefficients For C7N− and C10H− anions in Collision With H2 at Interstellar Conditions
The anions C7N− and C10H− are the two longest of the linear (C,N)-bearing and (C,H)-bearing chains which have so far been detected in the Interstellar Medium.
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Imaging & Spectroscopy, Interstellar, Status Report
Infrared Spectra of Solid-State Ethanolamine: Laboratory Data in Support of JWST Observations
Ethanolamine (NH2CH2CH2OH, EA) has been identified in the gas phase of the ISM within molecular clouds. Although EA has not been directly observed in the molecular ice phase, a solid […]
Posted inAstrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Habitable Zones, Imaging & Spectroscopy, Interstellar, Status Report
Effect of Different Stickiness Between Icy and Silicate Particles on Carbon Depletion in Protoplanetary Disks
Earth and other rocky bodies in the inner Solar System are significantly depleted in carbon compared to the Sun and interstellar medium (ISM) dust.
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Status Report, Stellar Cartography
Astrochemistry On Galactic Scales
The increasing number of observations towards different environments in the Milky Way, as well as theoretical and experimental works, are improving our knowledge of the astrochemical processes in the interstellar […]
Posted inAstrochemistry, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Status Report
Chemical Models of Interstellar Glycine and Adenine Precursor Aminoacetonitrile (NH2CH2CN)
Aminoacetonitrile (AAN), also known as glycinenitrile, has been suggested as a possible precursor of glycine and adenine in the interstellar medium. Here we present the chemical modeling of AAN and […]
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Imaging & Spectroscopy, Status Report
Where Have All the Sulfur Atoms Gone? Polycyclic Aromatic Hydrocarbon as a Possible Sink for the Missing Sulfur in the Interstellar Medium. I. The C–S Band Strengths
Despite its biogeneic and astrochemical importance, sulfur (S), the 10th most abundant element in the interstellar medium (ISM) with a total abundance of S/H~2.2E-5, largely remains undetected in molecular clouds.
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Press Release
Detection Of Dimethyl Ether In The Central Region Of The MWC 480 Protoplanetary Disk
Characterizing the chemistry of complex organic molecules (COMs) at the epoch of planet formation provides insights into the chemical evolution of the interstellar medium (ISM) and the origin of organic […]