Using 26Al to detect ongoing self-enrichment in young massive star clusters

Self-enrichment is one of the leading explanations for chemical anomalies in globular clusters. In this scenario, various candidate polluter stars have been proposed to eject gas with altered chemical composition during the self-enrichment process. Most of the proposed polluters will also eject radi...

Descripción completa

Detalles Bibliográficos
Autores: Nowak, Katarzyna, Krause, Martin G. H., Siegert, Thomas, Forbrich, Jan, Yates, Robert M., Ramírez-Galeano, Laura, Charbonnel, Corinne, Gieles, Mark
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:10261/371831
Acceso en línea:http://hdl.handle.net/10261/371831
Access Level:acceso abierto
Palabra clave:ISM: nuclear reactions
Nucleosynthesis
Stars: abundances
Globular clusters: general
id ES_9abd2a2ed7b1e6fc6d76b06b73b0b3af
oai_identifier_str oai:digital.csic.es:10261/371831
network_acronym_str ES
network_name_str España
repository_id_str
spelling Using 26Al to detect ongoing self-enrichment in young massive star clustersNowak, KatarzynaKrause, Martin G. H.Siegert, ThomasForbrich, JanYates, Robert M.Ramírez-Galeano, LauraCharbonnel, CorinneGieles, MarkISM: nuclear reactionsNucleosynthesisStars: abundancesGlobular clusters: generalSelf-enrichment is one of the leading explanations for chemical anomalies in globular clusters. In this scenario, various candidate polluter stars have been proposed to eject gas with altered chemical composition during the self-enrichment process. Most of the proposed polluters will also eject radioactive 26 Al into the surroundings. Hence, any detection of 26 Al in young massive star clusters (YMCs) would support the self-enrichment scenario if YMCs were indeed the progenitors of globular clusters. Observations of gamma-ray data from COMPTEL and INTEGRAL, as well as detections of 26 AlF molecules by the Atacama Large Millimeter-submillimeter Array (ALMA), indicate the maturing of 26 Al detection methods. Detection possibilities will be enhanced in the short- to mid-term by the upcoming launch of the Compton Spectrometer and Imager (COSI). The Square Kilometre Array (SKA) could in principle also detect radio recombination lines of the positronium formed from the decay products of 26 Al. Here, we show for a sample of YMCs in the nearby Universe, where self-enrichment could plausibly take place. For some nearby galaxies, this could enhance 26 Al by an order of one magnitude. Detecting 26 AlF with ALMA appears feasible for many candidate self-enrichment clusters, although significant challenges remain with other detection methods. The Large Magellanic Cloud, with its YMC R136, stands out as the most promising candidate. Detecting a 1.8 MeV radioactive decay line of 26 Al here would require at least 15 months of targeted observation with COSI, assuming ongoing self-enrichment in R136.This work was supported by Science and Technology Facilities Council (ST/V506709/1).Peer reviewedOxford University PressScience and Technology Facilities Council (UK)202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/371831reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésThe underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1093/mnras/stae2227https://doi.org/10.1093/mnras/stae2227Noinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3718312026-05-22T06:33:51Z
dc.title.none.fl_str_mv Using 26Al to detect ongoing self-enrichment in young massive star clusters
title Using 26Al to detect ongoing self-enrichment in young massive star clusters
spellingShingle Using 26Al to detect ongoing self-enrichment in young massive star clusters
Nowak, Katarzyna
ISM: nuclear reactions
Nucleosynthesis
Stars: abundances
Globular clusters: general
title_short Using 26Al to detect ongoing self-enrichment in young massive star clusters
title_full Using 26Al to detect ongoing self-enrichment in young massive star clusters
title_fullStr Using 26Al to detect ongoing self-enrichment in young massive star clusters
title_full_unstemmed Using 26Al to detect ongoing self-enrichment in young massive star clusters
title_sort Using 26Al to detect ongoing self-enrichment in young massive star clusters
dc.creator.none.fl_str_mv Nowak, Katarzyna
Krause, Martin G. H.
Siegert, Thomas
Forbrich, Jan
Yates, Robert M.
Ramírez-Galeano, Laura
Charbonnel, Corinne
Gieles, Mark
author Nowak, Katarzyna
author_facet Nowak, Katarzyna
Krause, Martin G. H.
Siegert, Thomas
Forbrich, Jan
Yates, Robert M.
Ramírez-Galeano, Laura
Charbonnel, Corinne
Gieles, Mark
author_role author
author2 Krause, Martin G. H.
Siegert, Thomas
Forbrich, Jan
Yates, Robert M.
Ramírez-Galeano, Laura
Charbonnel, Corinne
Gieles, Mark
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Science and Technology Facilities Council (UK)
dc.subject.none.fl_str_mv ISM: nuclear reactions
Nucleosynthesis
Stars: abundances
Globular clusters: general
topic ISM: nuclear reactions
Nucleosynthesis
Stars: abundances
Globular clusters: general
description Self-enrichment is one of the leading explanations for chemical anomalies in globular clusters. In this scenario, various candidate polluter stars have been proposed to eject gas with altered chemical composition during the self-enrichment process. Most of the proposed polluters will also eject radioactive 26 Al into the surroundings. Hence, any detection of 26 Al in young massive star clusters (YMCs) would support the self-enrichment scenario if YMCs were indeed the progenitors of globular clusters. Observations of gamma-ray data from COMPTEL and INTEGRAL, as well as detections of 26 AlF molecules by the Atacama Large Millimeter-submillimeter Array (ALMA), indicate the maturing of 26 Al detection methods. Detection possibilities will be enhanced in the short- to mid-term by the upcoming launch of the Compton Spectrometer and Imager (COSI). The Square Kilometre Array (SKA) could in principle also detect radio recombination lines of the positronium formed from the decay products of 26 Al. Here, we show for a sample of YMCs in the nearby Universe, where self-enrichment could plausibly take place. For some nearby galaxies, this could enhance 26 Al by an order of one magnitude. Detecting 26 AlF with ALMA appears feasible for many candidate self-enrichment clusters, although significant challenges remain with other detection methods. The Large Magellanic Cloud, with its YMC R136, stands out as the most promising candidate. Detecting a 1.8 MeV radioactive decay line of 26 Al here would require at least 15 months of targeted observation with COSI, assuming ongoing self-enrichment in R136.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
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/10261/371831
url http://hdl.handle.net/10261/371831
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1093/mnras/stae2227
https://doi.org/10.1093/mnras/stae2227
No
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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
_version_ 1869414429106372608
score 15.811543

Similares en LA Referencia