ALCHEMI, an AL MA Comprehensive High-resolution Extragalactic Molecular Inventory: Survey presentation and first results from the ACA array

Martín, S., et al.

Detalles Bibliográficos
Autores: Martín, Sergio, Herrero-Illana, Rubén, Colzi, Laura, Rivilla, Víctor M., Fuller, Amerlia A., Yan, Yaoting T.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/262624
Acceso en línea:http://hdl.handle.net/10261/262624
Access Level:acceso abierto
Palabra clave:Line: identification
Galaxies: ISM
Galaxies: individual: NGC 253
Galaxies: starburst
ISM: molecules
Submillimeter: ISM
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spelling ALCHEMI, an AL MA Comprehensive High-resolution Extragalactic Molecular Inventory: Survey presentation and first results from the ACA arrayMartín, SergioHerrero-Illana, RubénColzi, LauraRivilla, Víctor M.Fuller, Amerlia A.Yan, Yaoting T.Line: identificationGalaxies: ISMGalaxies: individual: NGC 253Galaxies: starburstISM: moleculesSubmillimeter: ISMMartín, S., et al.[Context] The interstellar medium is the locus of physical processes affecting the evolution of galaxies which drive or are the result of star formation activity, supermassive black hole growth, and feedback. The resulting physical conditions determine the observable chemical abundances that can be explored through molecular emission observations at millimeter and submillimeter wavelengths. [Aims] Our goal is to unveiling the molecular richness of the central region of the prototypical nearby starburst galaxy NGC 253 at an unprecedented combination of sensitivity, spatial resolution, and frequency coverage. [Methods] We used the Atacama Large Millimeter/submillimeter Array (ALMA), covering a nearly contiguous 289 GHz frequency range between 84.2 and 373.2 GHz, to image the continuum and spectral line emission at 1.6″(∼28 pc) resolution down to a sensitivity of 30 - 50 mK. This article describes the ALMA Comprehensive High-resolution Extragalactic Molecular Inventory (ALCHEMI) large program. We focus on the analysis of the spectra extracted from the 15″ (∼255 pc) resolution ALMA Compact Array data. [Results] We modeled the molecular emission assuming local thermodynamic equilibrium with 78 species being detected. Additionally, multiple hydrogen and helium recombination lines are identified. Spectral lines contribute 5 to 36% of the total emission in frequency bins of 50 GHz. We report the first extragalactic detections of C2H5OH, HOCN, HC3HO, and several rare isotopologues. Isotopic ratios of carbon, oxygen, sulfur, nitrogen, and silicon were measured with multiple species. [Concluison] Infrared pumped vibrationaly excited HCN, HNC, and HC3N emission, originating in massive star formation locations, is clearly detected at low resolution, while we do not detect it for HCO+. We suggest high temperature conditions in these regions driving a seemingly "carbon-rich"chemistry which may also explain the observed high abundance of organic species close to those in Galactic hot cores. The Lvib/LIR ratio was used as a proxy to estimate a 3% contribution from the proto super star cluster to the global infrared emission. Measured isotopic ratios with high dipole moment species agree with those within the central kiloparsec of the Galaxy, while those derived from 13C/18O are a factor of five larger, confirming the existence of multiple interstellar medium components within NGC 253 with different degrees of nucleosynthesis enrichment. The ALCHEMI data set provides a unique template for studies of star-forming galaxies in the early Universe.Peer reviewedEDP SciencesConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2022202220212022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/262624reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://doi.org/10.1051/0004-6361/202141567Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2626242026-05-22T06:33:51Z
dc.title.none.fl_str_mv ALCHEMI, an AL MA Comprehensive High-resolution Extragalactic Molecular Inventory: Survey presentation and first results from the ACA array
title ALCHEMI, an AL MA Comprehensive High-resolution Extragalactic Molecular Inventory: Survey presentation and first results from the ACA array
spellingShingle ALCHEMI, an AL MA Comprehensive High-resolution Extragalactic Molecular Inventory: Survey presentation and first results from the ACA array
Martín, Sergio
Line: identification
Galaxies: ISM
Galaxies: individual: NGC 253
Galaxies: starburst
ISM: molecules
Submillimeter: ISM
title_short ALCHEMI, an AL MA Comprehensive High-resolution Extragalactic Molecular Inventory: Survey presentation and first results from the ACA array
title_full ALCHEMI, an AL MA Comprehensive High-resolution Extragalactic Molecular Inventory: Survey presentation and first results from the ACA array
title_fullStr ALCHEMI, an AL MA Comprehensive High-resolution Extragalactic Molecular Inventory: Survey presentation and first results from the ACA array
title_full_unstemmed ALCHEMI, an AL MA Comprehensive High-resolution Extragalactic Molecular Inventory: Survey presentation and first results from the ACA array
title_sort ALCHEMI, an AL MA Comprehensive High-resolution Extragalactic Molecular Inventory: Survey presentation and first results from the ACA array
dc.creator.none.fl_str_mv Martín, Sergio
Herrero-Illana, Rubén
Colzi, Laura
Rivilla, Víctor M.
Fuller, Amerlia A.
Yan, Yaoting T.
author Martín, Sergio
author_facet Martín, Sergio
Herrero-Illana, Rubén
Colzi, Laura
Rivilla, Víctor M.
Fuller, Amerlia A.
Yan, Yaoting T.
author_role author
author2 Herrero-Illana, Rubén
Colzi, Laura
Rivilla, Víctor M.
Fuller, Amerlia A.
Yan, Yaoting T.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Line: identification
Galaxies: ISM
Galaxies: individual: NGC 253
Galaxies: starburst
ISM: molecules
Submillimeter: ISM
topic Line: identification
Galaxies: ISM
Galaxies: individual: NGC 253
Galaxies: starburst
ISM: molecules
Submillimeter: ISM
description Martín, S., et al.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022
2022
2022
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/10261/262624
url http://hdl.handle.net/10261/262624
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://doi.org/10.1051/0004-6361/202141567
Sí
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 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)
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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