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Campo DC | Valor | Idioma |
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dc.rights.license | Copyright © 2020, Oxford University Press | - |
dc.contributor.author | Carrascosa, H. | - |
dc.contributor.author | Cruz Díaz, G. A. | - |
dc.contributor.author | Muñoz Caro, G. M. | - |
dc.contributor.author | Dartois, E. | - |
dc.contributor.author | Chen, Y. J. | - |
dc.contributor.other | Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737 | - |
dc.date.accessioned | 2021-04-12T10:59:30Z | - |
dc.date.available | 2021-04-12T10:59:30Z | - |
dc.date.issued | 2020-02-19 | - |
dc.identifier.citation | Monthly Notices of the Royal Astronomical Society 493(1): 821-829(2020) | es |
dc.identifier.issn | 0035-8711 | - |
dc.identifier.other | https://academic.oup.com/mnras/article/493/1/821/5740528 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12666/264 | - |
dc.description.abstract | At the low temperatures found in the interior of dense clouds and circumstellar regions, along with H2O and smaller amounts of species such as CO, CO2 or CH3OH, the infrared features of CH4 have been observed on icy dust grains. Ultraviolet (UV) photons induce different processes in ice mantles, affecting the molecular abundances detected in the gas phase. This work aims to understand the processes that occur in a pure CH4 ice mantle subjected to UV irradiation. We studied photon-induced processes for the different photoproducts arising in the ice upon UV irradiation. Experiments were carried out in ISAC, an ultra-high vacuum chamber equipped with a cryostat and an F-type UV lamp reproducing the secondary UV field induced by cosmic rays in dense clouds. Infrared spectroscopy and quadrupole mass spectrometry were used to monitor the solid and gas phases, respectively, during the formation, irradiation and warming-up of the ice. Direct photodesorption of pure CH4 was not observed. UV photons form CHx· and H· radicals, leading to photoproducts such as H2, C2H2, C2H6 and C3H8. Evidence for the photodesorption of C2H2 and photochemidesorption of C2H6 and C3H8 was found; the latter species is so far the largest molecule found to photochemidesorb. 13CH4 experiments were also carried out to confirm the reliability of these results. | es |
dc.description.sponsorship | The Spanish Ministry of Science, Innovation and Universities supported this research under grant number AYA2017-85322-R (AEI/FEDER, UE), Ph.D. fellowship FPU-17/03172 and MDM2017-0737 Unidad de Excelencia 'Maria de Maeztu' -Centro de Astrobiologia (CSIC-INTA). GAC-D was supported by the National Aeronautics and Space Administration through the NASA Astrobiology Institute under Cooperative Agreement Notice NNH13ZDA017C issued through the Science Mission Directorate. We also benefited from financial supportbyMOST grants in Taiwan: MOST 107-2112-M-008-016-MY3. | es |
dc.language.iso | eng | es |
dc.publisher | Oxford Academics: Oxford University Press | es |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2017-85322-R/ES/PROCESOS EN HIELOS ASTROFISICOS/ | - |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | * |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Astrochemistry | es |
dc.subject | Methods: laboratory: molecular | es |
dc.subject | ISM: molecules | es |
dc.subject | Ultraviolet: ISM | es |
dc.title | Photon-induced desorption of larger species in UV-irradiated methane ice | es |
dc.type | info:eu-repo/semantics/article | es |
dc.contributor.orcid | Carrascosa, H. [0000-0002-2885-4847] | - |
dc.contributor.orcid | Chen, Y. J. [0000-0003-4497-3747] | - |
dc.contributor.orcid | Dartois, E. [0000-0003-1197-7143] | - |
dc.identifier.doi | 10.1093/mnras/staa334 | - |
dc.identifier.e-issn | 1365-2966 | - |
dc.contributor.funder | Agencia Estatal de Investigación (AEI) | - |
dc.contributor.funder | Ministry of Science and Technology, Taiwan (MOST) | - |
dc.contributor.funder | National Aeronautics and Space Administration (NASA) | - |
dc.description.peerreviewed | Peer review | es |
dc.identifier.funder | http://dx.doi.org/10.13039/501100011033 | - |
dc.type.hasVersion | info:eu-repo/semantics/publishedVersion | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | - |
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