Multi-line study of the radial extent of SiO, CS, and SiS in AGB envelopes

12 pages, 7 figures, 3 tables

Detalles Bibliográficos
Autores: Massalkhi, S., Agúndez, Marcelino, Fonfría, José Pablo, Pardo Carrión, Juan Ramón, Velilla Prieto, L., Jose Cernicharo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/377558
Acceso en línea:http://hdl.handle.net/10261/377558
http://arxiv.org/abs/2405.19922v1
Access Level:acceso abierto
Palabra clave:Astrochemistry
Molecular processes
Radio lines: stars
Stars: AGB and post-AGB
Astro-ph.SR
Astro-ph.GA
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dc.title.none.fl_str_mv Multi-line study of the radial extent of SiO, CS, and SiS in AGB envelopes
title Multi-line study of the radial extent of SiO, CS, and SiS in AGB envelopes
spellingShingle Multi-line study of the radial extent of SiO, CS, and SiS in AGB envelopes
Massalkhi, S.
Astrochemistry
Molecular processes
Radio lines: stars
Stars: AGB and post-AGB
Astro-ph.SR
Astro-ph.GA
title_short Multi-line study of the radial extent of SiO, CS, and SiS in AGB envelopes
title_full Multi-line study of the radial extent of SiO, CS, and SiS in AGB envelopes
title_fullStr Multi-line study of the radial extent of SiO, CS, and SiS in AGB envelopes
title_full_unstemmed Multi-line study of the radial extent of SiO, CS, and SiS in AGB envelopes
title_sort Multi-line study of the radial extent of SiO, CS, and SiS in AGB envelopes
dc.creator.none.fl_str_mv Massalkhi, S.
Agúndez, Marcelino
Fonfría, José Pablo
Pardo Carrión, Juan Ramón
Velilla Prieto, L.
Jose Cernicharo
author Massalkhi, S.
author_facet Massalkhi, S.
Agúndez, Marcelino
Fonfría, José Pablo
Pardo Carrión, Juan Ramón
Velilla Prieto, L.
Jose Cernicharo
author_role author
author2 Agúndez, Marcelino
Fonfría, José Pablo
Pardo Carrión, Juan Ramón
Velilla Prieto, L.
Jose Cernicharo
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
European Commission
CSIC - Secretaría General Adjunta de Informática (SGAI)
Centro de Supercomputación de Galicia
#NODATA#
Agúndez, Marcelino [0000-0003-3248-3564]
Fonfría, José Pablo [0000-0002-6556-6692]
Pardo Carrión, Juan Ramón [0000-0003-4639-8440]
Velilla Prieto, L. [0000-0001-8275-9341]
Jose Cernicharo [0000-0002-3518-2524]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Astrochemistry
Molecular processes
Radio lines: stars
Stars: AGB and post-AGB
Astro-ph.SR
Astro-ph.GA
topic Astrochemistry
Molecular processes
Radio lines: stars
Stars: AGB and post-AGB
Astro-ph.SR
Astro-ph.GA
description 12 pages, 7 figures, 3 tables
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
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info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/377558
http://arxiv.org/abs/2405.19922v1
url http://hdl.handle.net/10261/377558
http://arxiv.org/abs/2405.19922v1
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dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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)
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spelling Multi-line study of the radial extent of SiO, CS, and SiS in AGB envelopesMassalkhi, S.Agúndez, MarcelinoFonfría, José PabloPardo Carrión, Juan RamónVelilla Prieto, L.Jose CernicharoAstrochemistryMolecular processesRadio lines: starsStars: AGB and post-AGBAstro-ph.SRAstro-ph.GA12 pages, 7 figures, 3 tablesThe spatial distribution of molecules in AGB circumstellar envelopes is regulated by different processes. In the outer layers all molecules are destroyed due to the interaction with interstellar ultraviolet photons. Here we aim to characterize in a coherent and uniform way the radial extent of three molecules (SiO, CS, and SiS) in envelopes around AGB stars of O- and C-rich character, and to study their dependence with mass loss rate. To that purpose, we used the Yebes 40m and IRAM 30m telescopes to observe 7 M-type and 7 C-type AGB envelopes covering a wide range of mass loss rates (1e-7 - 1e-5 Msun/yr) in lines of SiO, CS, and SiS spanning a range of upper level energies of 2-130 K. We carried out excitation and radiative transfer calculations over a wide parameter space to characterize the molecular abundance and radial extent. A chi2 analysis indicates that the abundance is well constrained while the radial extent is more difficult to constrain. The radial extent increases with increasing envelope density, in agreement with previous observational findings. At high envelope densities, Mdot/vexp > 1e-6 (Msun/yr)/(km/s), the radial extent of SiO, CS, and SiS are similar, while at low envelope densities, Mdot/vexp < 1e-7 (Msun/yr)/(km/s), the radial extent differ among the three molecules, in agreement with theoretical expectations based on destruction due to photodissociation. At low envelope densities we find a sequence of increasing radial extent, SiS -> CS -> SiO. We also find a tentative dependence of the radial extent with the chemical type (O- or C-rich) of the star for SiO and CS. Interferometric observations and further investigation of the photodissociation of SiO, CS, and SiS should allow to clarify the situation on the relative photodissociation radius of SiO, CS, and SiS in AGB envelopes and the dependence with envelope density and C/O ratio.We acknowledge funding support from Spanish Ministerio de Ciencia e Innovación through grants AYA2016-75066-C2-1-P, PID2019106110GB-I00, PID2019-107115GB-C21, PID2019-105203GB-C21, PID2019105203GB-C22, PID2020-117034RJ-I00, and PIE 202250I097, and from the European Research Council (ERC Grant 610256: NANOCOSMOS). Calculations in this work were run at the SGAI-CSIC supercomputer DRAGO and the Galicia Supercomputing Center (CESGA).Peer reviewedEDP SciencesMinisterio de Ciencia e Innovación (España)European CommissionCSIC - Secretaría General Adjunta de Informática (SGAI)Centro de Supercomputación de Galicia#NODATA#Agúndez, Marcelino [0000-0003-3248-3564]Fonfría, José Pablo [0000-0002-6556-6692]Pardo Carrión, Juan Ramón [0000-0003-4639-8440]Velilla Prieto, L. [0000-0001-8275-9341]Jose Cernicharo [0000-0002-3518-2524]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/377558http://arxiv.org/abs/2405.19922v1reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI//AYA2016-75066-C2-1-Pinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106110GB-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107115GB-C21info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-105203GB-C21info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-105203GB-C22info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-117034RJ-I00info:eu-repo/grantAgreement/AEI//PIE2022-50I097info:eu-repo/grantAgreement/EC/FP7/610256A&A 688, A16 (2024)https://doi.org/10.1051/0004-6361/202450188Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3775582026-05-22T06:33:51Z
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