dark molecular cloud TMC-1 Archives

Schematic of generative process to determine most chemically relevant molecular candidates for the unassigned spectroscopic transitions.-- [astro-ph.GA]

Automated Assignment and Prediction of Molecules in Astronomical Line Surveys Using Machine-Learning-Based Chemical Embeddings

by Keith CowingAugust 21, 2026August 21, 2026

[astro-ph.GA] Modern radio telescopes generate vast amounts of observational data, offering valuable insights into the molecular composition of interstellar sources. Identifying the molecules within these datasets typically involves time-consuming and […]

Energy diagram for the C2H5 + S reaction. Values in square brackets indicate energies for the same well in the C2H5 + O reaction studied in Vazart et al. (2020). Insets correspond to the structures at the potential wells. We note that the products cy-CH2SCH2 + H and C2H3SH + H are almost isoenergetic. -- astro-ph.GA

Astrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Intelligence & Language, Interstellar, Status Report

Detection of Thioacetaldehyde (CH3CHS) in TMC-1: Sulfur-oxygen Differentiation Along The Hydrogenation Sequence

by Keith CowingJanuary 11, 2025January 11, 2025

In recent years the chemistry of sulfur in the interstellar medium has experienced a renewed interest due to the detection of a large variety of molecules containing sulfur.

Astrochemistry, Astronomy & Telescopes, Imaging & Spectroscopy, Interstellar, Press Release

Rotational Spectra of Interstellar N- and CN-PAHs: Pyrene and Coronene

by Keith CowingNovember 4, 2022

The detection of benzonitrile (C6H5CN), 1- and 2-cyano-naphthalene (C10H7CN) in the cold, dark molecular cloud TMC-1 at centimetre (cm) wavelengths has opened up prospects for the detection of other N- […]