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A chemical study of carbon fractionation in external galaxies

Identificadores del recurso

Monthly Notices of the Royal Astronomical Society 497: 4333- 4345 (2020)

0035-8711

https://academic.oup.com/mnras/article-abstract/497/4/4333/5877251

http://hdl.handle.net/20.500.12666/150

10.1093/mnras/staa2215

1365-2966

Procedencia

Ficha

Título:: A chemical study of carbon fractionation in external galaxies
Tema:: ISM: abundances; ISM: molecules; Galaxies: ISM; Molecular Tracers; Gas; Star Formation
Descrición:: In the interstellar medium carbon exists in the form of two stable isotopes 12C and 13C and their ratio is a good indicator of nucleosynthesis in galaxies. However, chemical fractionation can potentially significantly alter this ratio and in fact observations of carbon fractionation within the same galaxy has been found to vary from species to species. In this paper, we theoretically investigate the carbon fractionation for selected abundant carbon-bearing species in order to determine the conditions that may lead to a spread of the 12C/13C ratio in external galaxies. We find that carbon fractionation is sensitive to almost all the physical conditions we investigated, it strongly varies with time for all species but CO, and shows pronounced differences across species. Finally, we discuss our theoretical results in the context of the few observations of the 12C/13C in both local and higher redshift galaxies.; SV acknowledges support from the European Research Council (ERC) grant MOPPEX ERC-833460. SV and FF acknowledge the support of Science and Technology Facilities Council (STFC) (grant number ST/R000476/1) and the Center for Astrochemical Study at MPE for partially supporting this work. I.J.-S. has received partial support from the Spanish FEDER (project number ESP2017-86582-C4-1-R). We thank Prof Roueff for providing us the needed information to perform a benchmarking with her model, and the anonymous referee for their constructive comments which improved the manuscript. Also with funding from the Spanish government through the "María de Maeztu Unit of Excellence" accreditation (MDM-2017-0737); Peer review
Idioma:: English
Relación:: info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-86582-C4-1-R/ES/CONTRIBUCION ESPAÑOLA A LAS MISIONES ESPACIALES CRIOGENICAS SPICA Y ATHENA, POST-OPERACIONES DE HERSCHEL Y EXPLOTACION CIENTIFICA MULTIFRECUENCIA/; info:eu-repo/grantAgreement/EC/H2020/833460
Autor/Productor:: Viti, S.; Fontani, F.; Jiménez Serra, I.
Editor:: Oxford Academics: Blackwell Publishing
Otros colaboradores/productores:: Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737; 0000-0003-4493-8714; 0000-0003-0348-3418; 0000-0001-8504-8844; Agencia Estatal de Investigación (AEI); European Research Council (ERC); Science and Technology Facilities Council (STFC)
Dereitos:: Attribution-NonCommercial-NoDerivatives 4.0 International; © 2020 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.; https://creativecommons.org/licenses/by-nc-nd/4.0/; info:eu-repo/semantics/openAccess
Data:: 2021-04-08T07:24:45Z; 2020-07-18
Tipo de recurso:: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; http://purl.org/coar/resource_type/c_6501
Formato:: application/pdf

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