There is mounting evidence that the composition and structure of planetary systems are intimately linked to their birth environments. During the past decade, several spectral surveys probed the chemistry of […]
astro-ph.GA]
Posted inAstrochemistry, Press Release
Formation of Complex Organic Molecules in Cold Interstellar Environments Through Non-diffusive Grain-surface And Ice-mantle Chemistry
A prevailing theory for the interstellar production of complex organic molecules (COMs) involves formation on warm dust-grain surfaces, via the diffusion and reaction of radicals produced through grain-surface photodissociation of […]
Posted inAstrochemistry, Press Release
Submillimetre and Far-infrared Spectroscopy Of Monodeuterated Amidogen radical (NHD): Improved Rest-frequencies For Astrophysical Observations
Observations of ammonia in interstellar environments have revealed high levels of deuteration, and all its D-containing variants, including ND3, have been detected in cold prestellar cores and around young protostars. […]
Posted inAstrochemistry, Press Release
Propargylimine In The Laboratory And In Space: Millimetre-wave Spectroscopy And First Detection In The ISM
Small imines containing up to three carbon atoms are present in the interstellar medium. As alkynyl compounds are abundant in this medium, propargylimine thus represents a promising candidate for a […]
Posted inAstrochemistry, Press Release
A Systematic Study on the Absorption Features of Interstellar Ices in Presence of Impurities
Spectroscopic studies play a key role in the identification and analysis of interstellar ices and their structure. Some molecules have been identified within the interstellar ices either as pure, mixed, […]
Posted inAstrochemistry, Press Release
Isomers in Interstellar Environments (I): The Case of Z- and E-Cyanomethanimine
In this work, we present the results of our investigation into the chemistry of Z- and E-cyanomethanimine (HNCHCN), both of which are possible precursors to the nucleobase adenine. Ab initio […]
Posted inAstrochemistry, Press Release
Petroleum, Coal And Other Organics In Space
The petroleum and coal models of the unidentified infrared emissions (UIE), sometimes referred also as unidentified infrared bands (UIBs) has been reviewed mainly based on the work of the authors […]
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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 […]
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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 […]