[astro-ph.GA] Chemical correlations between molecules provide powerful diagnostics to probe the physical conditions of protostellar outflows. In particular, the relationship between methanol (CH3OH) and methyl cyanide (CH3CN) offers a promising […]
astrochemistry
Posted inAstrochemistry
The Line Emission Terahertz Observatory (LETO): Exploring The Lifecycle Of The ISM And The Origins Of Water
[astro-ph.IM] The Interstellar Medium (ISM) is the reservoir of baryonic matter from which stars and planetary systems are formed. It is also the repository of the material that is expelled […]
Posted inAstrochemistry
Implications Of Self-consistent H2O Ice Optical Constants On Radiative Transfer Models Of Disks
[astro-ph.EP] Interstellar water (H2O) ice exhibits significantly varied profiles over its spectral features with temperature and thermal history.
Posted inUncategorized
A Look At Eight Outbursts Of Comet 7P/Pons-Winnecke
Cometary outbursts may be used as a means to infer the physical processes occurring on cometary nuclei. To that end, we studied eight outbursts of comet 7P/Pons-Winnecke identified between 2021 […]
Posted inAstrobiology (general), Astrochemistry, Astrogeology, Astronomy & Telescopes, Policy, Reports, Roadmaps, & Plans
Input Sought: Review of Progress Toward the Decadal Survey Pathways to Discovery in Astronomy and Astrophysics for the 2020s
The National Academies’ decadal survey, Pathways to Discovery in Astronomy and Astrophysics for the 2020s (Astro2020), identifies the most compelling science challenges and frontiers in astronomy and astrophysics and presents […]
Posted inAstrochemistry
Reaction Mechanisms and Kinetics of CN and CCH with H2CS: Implications for Interstellar Sulfur Chemistry
We report an ab initio and master-equation investigation of the gas-phase reactions of thioformaldehyde (H2CS) with CN and CCH radicals, motivated by the recent detection of the S-containing species HCSCN […]
Posted inUncategorized
An Empirical Determination Of The Cosmic Shoreline
The cosmic shoreline concept was introduced to separate planets with atmospheres from those without, by relating the cumulative X-ray and extreme-ultraviolet (XUV) instellation (integrated over the planet’s lifetime) to the […]
Posted inComets and Asteroids
Webb Finds Clues To The Ancient Origin Of Comet 3I/ATLAS
The third identified interstellar comet in human history has a surprising chemical makeup, raising questions as to how common, or unusual, conditions in our own Solar System may be.
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Interstellar, Status Report
Dust Colour, Phase Behaviour, And Monte Carlo Modelling Of Interstellar Comet 3I/ATLAS From 4 au Pre- to 4 au Post-Perihelion
We report multi-band photometric imaging observations and Monte Carlo dust tail modelling of the interstellar comet 3I/ATLAS covering a wide range of heliocentric distances, from about 4 au pre-perihelion to […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Imaging & Spectroscopy, Status Report
PAHSPECS: Polycyclic Aromatic Hydrocarbon Properties At Cosmic Noon With JWST/MIRI MRS
Context. Cosmic noon (z ~ 1-3) marks the peak of the cosmic star-formation rate density, when dust-obscured star formation dominated galaxy growth. Mid-infrared spectroscopy probes the interstellar medium through PAH […]