Results 31 to 40 of about 2,296,812 (225)

CN and CCH azirine derivatives, possible precursors of prebiotic molecules: Formation and spectroscopic parameters

open access: yesMonthly notices of the Royal Astronomical Society, 2023
N-heterocycles are of special relevance in astrobiology but at present no nitrogen-containing heterocycles have been detected in the interstellar medium (ISM).
P. Redondo, M. Sanz-Novo, C. Barrientos
semanticscholar   +1 more source

Absorption Spectra of Electrified Hydrogen Molecules [PDF]

open access: yesAstrophysical Journal, 2022
Molecular hydrogen normally has only weak, quadrupole transitions between its rovibrational states, but in a static electric field it acquires a dipole moment and a set of allowed transitions.
M. Walker
semanticscholar   +1 more source

Untangling the Formation Mechanisms of Biorelevant Molecules in the ISM with Photoionization Reflectron Time-of-Flight Mass Spectrometry [PDF]

open access: yesProceedings of the International Astronomical Union, 2015
AbstractExploiting reflectron time of flight mass spectrometry coupled with single photon ionization of the subliming molecules (PI-ReTOF-MS) during the temperature programmed desorption (TPD) and combining these data with on line and in situ infrared spectroscopy (FTIR), a versatile experimental approach has been established to elucidate the formation
Marko Förstel, Ralf I. Kaiser
openaire   +1 more source

Volatile Species in Comet 67P/Churyumov-Gerasimenko: Investigating the Link from the ISM to the Terrestrial Planets [PDF]

open access: yesACS Earth and Space Chemistry, 2019
Comets contain abundant amounts of organic and inorganic species. Many of the volatile molecules in comets have also been observed in the interstellar medium and some of them even with similar relative abundances, indicating formation under similar ...
M. Rubin   +4 more
semanticscholar   +1 more source

Photolysis of acetonitrile in a water-rich ice as a source of complex organic molecules: CH3CN and H2O:CH3CN ices

open access: yesAstronomy & Astrophysics, 2021
Context. Many C-, O-, and H-containing complex organic molecules (COMs) have been observed in the interstellar medium (ISM) and their formation has been investigated in laboratory experiments.
M. Bulak   +3 more
semanticscholar   +1 more source

Infrared emission of specific Polycyclic Aromatic Hydrocarbon molecules: Indene [PDF]

open access: yesMonthly notices of the Royal Astronomical Society
Polycyclic aromatic hydrocarbon (PAH) molecules have long been suggested to be present in the interstellar medium (ISM). Nevertheless, despite their expected ubiquity and sustained searching efforts, identifying specific interstellar PAH molecules from
Kaijun Li   +3 more
semanticscholar   +1 more source

Low-Temperature Mixing of Polar Hydrogen Bond-Forming Molecules in Amorphous Solid Water

open access: yesJournal of Physical Chemistry C, 2022
Understanding the mixing of atoms and molecules in amorphous solid water (ASW) at low temperatures is of interest and relevance to model studies of photochemistry that take place in the interstellar medium (ISM). In this study we explore how the physical
M. Akerman, Roey Sagi, M. Asscher
semanticscholar   +1 more source

Quantum mechanical modeling of interstellar molecules on cosmic dusts: H2O, NH3, and CO2

open access: yesFrontiers in Chemistry, 2022
Since the first detection of CH molecule in interstellar medium (ISM), more than 270 molecules have been identified in various astronomical sources in ISM.
Fang-Fei Li   +4 more
semanticscholar   +1 more source

More π, please: What drives the formation of unsaturated molecules in the interstellar medium?

open access: yesChemical Science
We present a computational investigation into the fragmentation pathways of ethanolamine (C2H7NO, EtA), propanol (C3H8O, PrO), butanenitrile (C4H7N, BuN), and glycolamide (C2H5NO2, GlA)—saturated organic molecules detected in the interstellar medium (ISM)
Jhoan Londoño-Restrepo   +4 more
semanticscholar   +1 more source

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