The design, implementation, and performance of a customized carbon atom beam source for the purpose of investigating solid-state reaction routes in interstellar ices in molecular clouds are discussed. The source […]
astrochemistry
Posted inAstrochemistry, Press Release
Thermal Formation of Ammonium Carbamate on the Surface of Laboratory Analogues of Carbonaceous Grains in Protostellar Envelopes and Planet-forming Disks
The catalytic role of dust grain surfaces in the thermal reaction CO2 + 2NH3 → NH4+NH2COO was recently demonstrated by our group. The rate coefficients for the reaction at 80 […]
Posted inAstrochemistry, Press Release
An Experimental Study of the Surface Formation of Methane in Interstellar Molecular Clouds
Methane is one of the simplest stable molecules that is both abundant and widely distributed across space. It is thought to have partial origin from interstellar molecular clouds, which are […]
Posted inAstrochemistry, Press Release
Formation Of NH2CHO And CH3CHO Upon UV Photoprocessing Of Interstellar Ice Analogs
Complex organic molecules (COMs) can be produced by energetic processing of interstellar ice mantles accreted on top of dust grains. Two COMs with proposed energetic ice formation pathways are formamide […]
Posted inAstrochemistry, Press Release
DFT Study On Interstellar PAH Molecules With Aliphatic Side Groups
Polycyclic Aromatic Hydrocarbon (PAH) molecules have been long adjudged to contribute to the frequently detected distinct emission features at 3.3, 6.2, 7.7, 8.6, 11.2 and 12.7 {\mu}m with weaker and […]
Posted inAstrochemistry, Press Release
Spitzer's Perspective Of Polycyclic Aromatic Hydrocarbons In Galaxies
Polycyclic aromatic hydrocarbon (PAH) molecules, as revealed by the distinctive set of emission bands at 3.3, 6.2, 7.7, 8.6, 11.3 and 12.7 μm characteristic of their vibrational modes, are abundant […]
Posted inMeteorites & Asteroids, Press Release
Potassium Isotope Compositions of Carbonaceous and Ordinary Chondrites
Solar system materials are variably depleted in moderately volatile elements (MVEs) relative to the proto-solar composition. To address the origin of this MVE depletion, we conducted a systematic study of […]
Posted inAstrochemistry, Press Release
Delivery Of Water And Volatiles To The Terrestrial Planets And The Moon
From modeling the evolution of disks of planetesimals under the influence of planets, it has been shown that the mass of water delivered to the Earth from beyond Jupiter’s orbit […]
Posted inAstrochemistry, Press Release
Deep Search For Hydrogen Peroxide Toward Pre- And Protostellar Objects
Context: In the laboratory, hydrogen peroxide (HOOH) was proven to be an intermediate product in the solid-state reaction scheme that leads to the formation of water on icy dust grains. […]
Posted inAstrochemistry, Press Release
Identification Of Pre-biotic Molecules Containing Peptide-like Bond In A Hot Molecular Core, G10.47+0.03
After hydrogen, oxygen, and carbon, nitrogen is one of the most chemically active species in the interstellar medium (ISM). Nitrogen bearing molecules have great importance as they are actively involved […]