Results 11 to 20 of about 312,846 (164)
Frontiers in Astronomy and Space Sciences, 2022 The investigation of reaction mechanisms in the interstellar medium requires the evaluation of reaction rates and branching ratios, which can be effectively obtained in the framework of the ab-initio transition state/master equation formalism.
Vincenzo Barone, Cristina Puzzarini
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Collisional excitation of complex organic molecules [PDF]
Proceedings of the International Astronomical Union, 2008 AbstractA major difficulty in modelling the infrared and (sub)millimeter spectra of gas-phase complex organic molecules is the lack of state-to-state collisional rate coefficients. Accurate quantum or classical scattering calculations for large polyatomic species are indeed computationally highly challenging, particularly when both rotation and low ...
Alexandre Faure +3 more
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THE ORIGIN OF COMPLEX ORGANIC MOLECULES IN PRESTELLAR CORES
The Astrophysical Journal, 2014 Complex organic molecules (COMs) have been detected in a variety of environments, including cold prestellar cores. Given the low temperature of these objects, these last detections challenge existing models. We report here new observations towards the prestellar core L1544.
Vastel, C. +3 more
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Complex organic molecules in protoplanetary disks [PDF]
Astronomy & Astrophysics, 2014 (Abridged) Protoplanetary disks are vital objects in star and planet formation, possessing all the material which may form a planetary system orbiting the new star. We investigate the synthesis of complex organic molecules (COMs) in disks to constrain the achievable chemical complexity and predict species and transitions which may be observable with ...
Walsh, C +7 more
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Interferometric Observations of Complex Organic Molecules [PDF]
Proceedings of the International Astronomical Union, 2005 Rich molecular complexity has been shown to exist in star forming regions primarily through millimeter to submillimeter single-dish spectral line surveys or searches over the years. With a few case studies, we demonstrate that interferometric observations are a powerful tool for advancing our knowledge of the chemical processes related to the formation
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Complex Organic Molecules in a Very Young Hot Corino, HOPS 373SW
The Astrophysical Journal, 2023 We present the spectra of complex organic molecules (COMs) detected in HOPS 373SW with the Atacama Large Millimeter/submillimeter Array (ALMA). HOPS 373SW, which is a component of a protostellar binary with a separation of 1500au, has been discovered as ...
Jeong-Eun Lee +8 more
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Results in Chemistry, 2023 Both natural organic products and complex compounds synthesized by organic chemists often contain many stereochemical configurations, so the identification of their structures and their absolute configurations are very important.
Heng Li, Yi Li, Jianmin Jiao, Chen Lin
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The Astrophysical Journal, 2023 The carbon ( ^3 P) atom is a reactive species that, according to laboratory experiments and theoretical calculations, condensates with interstellar ice components.
Stefano Ferrero +4 more
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Hydrogen transfer reactions of interstellar complex organic molecules [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 Radical recombination has been proposed to lead to the formation of complex organic molecules (COMs) in CO-rich ices in the early stages of star formation. These COMs can then undergo hydrogen addition and abstraction reactions leading to a higher or lower degree of saturation.
Álvarez-Barcia, S. +3 more
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The Astrophysical Journal, 2023 The reactivity of interstellar carbon atoms (C) on water-dominated ices is one of the possible ways to form interstellar complex organic molecules (iCOMs). In this work, we report a quantum chemical study of the coupling reaction of C ( ^3 P) with an icy
Stefano Ferrero +4 more
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