For the first time, the NASA/ESA/CSA James Webb Space Telescope has observed the chemical signature of carbon-rich dust grains at redshift ~ 7 [1], which is roughly equivalent to one […]
Polycyclic Aromatic Hydrocarbons
Posted inAI - Data - Apps - Cybernetics, Astrochemistry, Biochemistry & Organic Chemistry, Status Report
Machine-learning Identified Molecular Fragments Responsible For Infrared Emission Features Of Polycyclic Aromatic Hydrocarbons
Machine learning feature importance calculations are used to determine the molecular substructures that are responsible for mid and far-infrared (IR) emission features of neutral polycyclic aromatic hydrocarbons (PAHs).
Posted inAstrochemistry, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Status Report
Polycyclic Aromatic Hydrocarbon Size Tracers
We examine the dependence of polycyclic aromatic hydrocarbon (PAH) band intensity ratios as a function of the average number of carbon atoms and assess their effectiveness as tracers for PAH […]
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Imaging & Spectroscopy, Interstellar, Press Release
Spatial Variations In Aromatic Hydrocarbon Emission In A Dust-rich Galaxy
Dust grains absorb half of the radiation emitted by stars throughout the history of the universe, re-emitting this energy at infrared wavelengths.
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Press Release
Webb Detects The Universe’s Most Distant Complex Organic Molecules
Researchers have detected complex organic molecules in a galaxy more than 12 billion light-years away from Earth – the most distant galaxy in which these molecules are now known to […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Imaging & Spectroscopy, Interstellar, Status Report
Carbon-Chain Chemistry in the Interstellar Medium
The presence of carbon-chain molecules in the interstellar medium (ISM) has been known since the early 1970s and >100 such species have been identified to date, making up >40% of […]
Posted inAstrochemistry, Astrogeology, Comets and Asteroids, Missions & Hardware, Press Release
Ryugu Asteroid Sample Reveals That It Has A Rich Complement Of Organic Molecules
Asteroid Ryugu has a rich complement of organic molecules, according to a NASA and international team’s initial analysis of a sample from the asteroid’s surface delivered to Earth by Japan’s […]
Posted inAstrochemistry, Astronomy & Telescopes, Imaging & Spectroscopy, Press Release
Webb Reveals Intricate Networks of Gas, Dust, And Aromatic Hydrocarbons in Nearby Galaxies
Researchers using the NASA/ESA/CSA James Webb Space Telescope are getting their first look at star formation, gas, and dust in nearby galaxies with unprecedented resolution at infrared wavelengths.
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Status Report
A Framework for Modeling Polycyclic Aromatic Hydrocarbon Emission in Galaxy Evolution Simulations
We present a new methodology for simulating mid-infrared emission from polycyclic aromatic hydrocarbons (PAHs) in galaxy evolution simulations.
Posted inAstrochemistry, Biosignatures & Paleobiology, Meteorites & Asteroids, Status Report
Organic Compounds Found In The Winchcombe Carbonaceous Chondrite Meteorite
New research has been published on the organic analysis of the Winchcombe meteorite that crash landed onto a driveway in Winchcombe, Gloucestershire in 2021.