Desorption of N2, CO, CH4 and CO2 from interstellar carbonaceous dust analogues

12 pags., 8 figs., 3 tabs.

Detalles Bibliográficos
Autores: Maté, Belén, Jiménez-Redondo, Miguel, Peláez, Ramón J., Tanarro, Isabel, Herrero, Víctor J.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/208383
Acceso en línea:http://hdl.handle.net/10261/208383
Access Level:acceso abierto
Palabra clave:Astrochemistry
Molecular data
Methods: laboratory: molecular
Methods: laboratory: solid state
ISM: evolution
ISM: molecules.
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repository_id_str
spelling Desorption of N2, CO, CH4 and CO2 from interstellar carbonaceous dust analoguesMaté, BelénJiménez-Redondo, MiguelPeláez, Ramón J.Tanarro, IsabelHerrero, Víctor J.AstrochemistryMolecular dataMethods: laboratory: molecularMethods: laboratory: solid stateISM: evolutionISM: molecules.12 pags., 8 figs., 3 tabs.The interaction of volatile species with carbonaceous interstellar dust analogues is of relevance in the chemistry and physics of dense clouds in the interstellar medium. Two deposits of hydrogenated amorphous carbon (HAC), with different morphologies and aromatic versus aliphatic ratio in their structure, have been grown to model interstellar dust. The interaction of N2, CO, CH4, and CO2 with these two surfaces has been investigated using thermal programmed desorption (TPD). Desorption energy distributions were obtained by analysing TPD spectra for one monolayer coverage with the Polanyi–Wigner equation. The desorption energies found in this work for N2, CO, and CH4 are larger by 10–20 per cent than those reported in the literature for siliceous or amorphous solid water surfaces. Moreover, the experiments suggest that the interaction of the volatiles with the aromatic substructure of HAC is stronger than that with the aliphatic part. Desorption of CO2 from the HAC surfaces follows zero-order kinetics, reflecting the predominance of CO2–CO2 interactions. A model simulation of the heating of cold cloud cores shows that the volatiles considered in this work would desorb sequentially from carbonaceous dust surfaces with desorption times ranging from hundreds to tens of thousands of years, depending on the molecule and on the mass of the coreThis work was funded by the Ministerio de Economia y Competitividad (MINECO) of Spain under grant FIS2016-77726-C3-1-P and by the European Union under grant ERC-2013-Syg-210656- NANOCOSMOSBlackwell PublishingMinisterio de Economía y Competitividad (España)European CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020192020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/208383reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2016-77726-C3-1-Pinfo:eu-repo/grantAgreement/EC/FP7/210656http://dx.doi.org/10.1093/mnras/stz2603Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2083832026-05-22T06:33:51Z
dc.title.none.fl_str_mv Desorption of N2, CO, CH4 and CO2 from interstellar carbonaceous dust analogues
title Desorption of N2, CO, CH4 and CO2 from interstellar carbonaceous dust analogues
spellingShingle Desorption of N2, CO, CH4 and CO2 from interstellar carbonaceous dust analogues
Maté, Belén
Astrochemistry
Molecular data
Methods: laboratory: molecular
Methods: laboratory: solid state
ISM: evolution
ISM: molecules.
title_short Desorption of N2, CO, CH4 and CO2 from interstellar carbonaceous dust analogues
title_full Desorption of N2, CO, CH4 and CO2 from interstellar carbonaceous dust analogues
title_fullStr Desorption of N2, CO, CH4 and CO2 from interstellar carbonaceous dust analogues
title_full_unstemmed Desorption of N2, CO, CH4 and CO2 from interstellar carbonaceous dust analogues
title_sort Desorption of N2, CO, CH4 and CO2 from interstellar carbonaceous dust analogues
dc.creator.none.fl_str_mv Maté, Belén
Jiménez-Redondo, Miguel
Peláez, Ramón J.
Tanarro, Isabel
Herrero, Víctor J.
author Maté, Belén
author_facet Maté, Belén
Jiménez-Redondo, Miguel
Peláez, Ramón J.
Tanarro, Isabel
Herrero, Víctor J.
author_role author
author2 Jiménez-Redondo, Miguel
Peláez, Ramón J.
Tanarro, Isabel
Herrero, Víctor J.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Astrochemistry
Molecular data
Methods: laboratory: molecular
Methods: laboratory: solid state
ISM: evolution
ISM: molecules.
topic Astrochemistry
Molecular data
Methods: laboratory: molecular
Methods: laboratory: solid state
ISM: evolution
ISM: molecules.
description 12 pags., 8 figs., 3 tabs.
publishDate 2019
dc.date.none.fl_str_mv 2019
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/208383
url http://hdl.handle.net/10261/208383
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2016-77726-C3-1-P
info:eu-repo/grantAgreement/EC/FP7/210656
http://dx.doi.org/10.1093/mnras/stz2603
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Blackwell Publishing
publisher.none.fl_str_mv Blackwell Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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