Gas phase Elemental abundances in Molecular cloudS (GEMS). III: unlocking the CS chemistry: the CS+O reaction
| العنوان: | Gas phase Elemental abundances in Molecular cloudS (GEMS). III: unlocking the CS chemistry: the CS+O reaction |
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| المؤلفون: | Jacob C. Laas, C. Kramer, Rachel Friesen, Benoît Commerçon, Mario Tafalla, Niyazi Bulut, T. Alonso-Albi, Kevin M. Hickson, Valerio Lattanzi, S. Spezzano, Paola Caselli, Rafael Bachiller, Jaime E. Pineda, Johanna Malinen, Octavio Roncero, G. Muñoz-Caro, R. Martin-Domenech, E. Roueff, Alfredo Aguado, R. Le Gal, G. B. Esplugues, Pablo Riviere-Marichalar, Barbara M. Giuliano, Alvaro Hacar, Belén Tercero, Jason M. Kirk, A. Fuente, Santiago García-Burillo, Jean-Christophe Loison, Derek Ward-Thompson, Nuria Marcelino, Valentine Wakelam, Izaskun Jiménez-Serra, Maryvonne Gerin, Marcelino Agúndez, M. Rodríguez-Baras, S. P. Treviño-Morales, J. R. Goicoechea, D. Navarro-Almaida, Stéphanie Cazaux |
| المساهمون: | Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA (UMR_8112)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Institut des Sciences Moléculaires (ISM), Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), UAM. Departamento de Química Física Aplicada, Marcelino, N. [0000-0001-7236-4047], Roncero, O. [0000-0002-8871-4846], Pineda, J. [0000-0002-3972-1978], Agundez, M. [0000-0003-3248-3564], Tafalla, M. [0000-0002-2569-1253], Agencia Estatal de Investigación (AEI), Department of Physics |
| المصدر: | Astronomy and Astrophysics, 646 Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 646, pp.A5. ⟨10.1051/0004-6361/202039611⟩ Biblos-e Archivo. Repositorio Institucional de la UAM instname DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial Universitat Pompeu Fabra |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | DISSOCIATIVE RECOMBINATION, Astrophysics - astrophysics of galaxies, Analytical chemistry, Astrophysics, 7. Clean energy, 01 natural sciences, Molecular processes, ISM: clouds, ISM: abundances, Reaction rate, 010303 astronomy & astrophysics, Astrochemistry, Arrhenius equation, Physics, Química, ISM: molecules, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, CARBON MONOSULFIDE, RATE-CONSTANT, symbols, IONIZATION, RATE COEFFICIENTS, Abundances [ISM], SULFUR CHEMISTRY, FOS: Physical sciences, F500, 010402 general chemistry, STAR-FORMATION, symbols.namesake, Clouds [ISM], Reaction rate constant, Ab initio quantum chemistry methods, 0103 physical sciences, POTENTIAL-ENERGY SURFACE, Astrophysics::Galaxy Astrophysics, Molecules [ISM], F510, Molecular cloud, CORES, Astronomy and Astrophysics, 115 Astronomy, Space science, 0104 chemical sciences, Interstellar medium, [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], 13. Climate action, Space and Planetary Science, Reaction dynamics, Astrophysics of Galaxies (astro-ph.GA), DYNAMICS THEORY |
| الوصف: | Artículo escrito por un elevado número de autores, solo se referencia el que aparece en primer lugar, el nombre del grupo de colaboración, si lo hubiere, y los autores pertenecientes a la UAM Context. Carbon monosulphide (CS) is among the most abundant gas-phase S-bearing molecules in cold dark molecular clouds. It is easily observable with several transitions in the millimeter wavelength range, and has been widely used as a tracer of the gas density in the interstellar medium in our Galaxy and external galaxies. However, chemical models fail to account for the observed CS abundances when assuming the cosmic value for the elemental abundance of sulfur. Aims. The CS+O → CO + S reaction has been proposed as a relevant CS destruction mechanism at low temperatures, and could explain the discrepancy between models and observations. Its reaction rate has been experimentally measured at temperatures of 150-400 K, but the extrapolation to lower temperatures is doubtful. Our goal is to calculate the CS+O reaction rate at temperatures The research leading to these results has received funding from MICIU (Spain) under grants FIS2017-83473-C2, AYA2016-75066- C2-2-P, ESP2017-86582-C4-1-R, AYA2017-85111-P, PID2019-105552RB-C41 and PID2019-106235GB-I00. N.B. acknowledges the computing facilities by TUBITAK-TRUBA, and O.R. and A.A. acknowledge computing time at Finisterre (CESGA) and Marenostrum (BSC) under RES computational grants ACCT-2019-3-0004 and AECT-2020-1-0003. SPTM acknowledges the European Union’s Horizon 2020 research and innovation program for funding support under agreement No 639459 (PROMISE) |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0004-6361 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50fa2ca8b26374c06ed8499204ce289eTest http://hdl.handle.net/1887/3270741Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....50fa2ca8b26374c06ed8499204ce289e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00046361 |
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