The evolution of the metallicity gradient and the star formation efficiency in disc galaxies

Autores
Sillero Ros, Guillermo Emanuel; Tissera, Patricia Beatriz; Garcia Lambas, Diego Rodolfo; Michel-Dansac, Leopold Laurent Joseph
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the oxygen abundance profiles of the gas-phase components in hydrodynamical simulations of pre-prepared disc galaxies including major mergers, close encounters and isolated configurations. We analyse the evolution of the slope of oxygen abundance profiles and the specific star formation rate (sSFR) along their evolution. We find that galaxy-galaxy interactions could generate either positive or negative gas-phase oxygen profiles, depending on the state of evolution. Along the interaction, galaxies are found to have metallicity gradients and sSFR consistent with observations, on average. Strong gas inflows produced during galaxy- galaxy interactions or as a result of strong local instabilities in gas-rich discs are able to produce both a quick dilution of the central gas-phase metallicity and a sudden increase of the sSFR. Our simulations show that, during these events, a correlation between the metallicity gradients and the sSFR can be set up if strong gas inflows are triggered in the central regions in short time-scales. Simulated galaxies without experiencing strong disturbances evolve smoothly without modifying the metallicity gradients. Gas-rich systems show large dispersion along the correlation. The dispersion in the observed relation could be interpreted as produced by the combination of galaxies with different gas-richness and/or experiencing different types of interactions. Hence, our findings suggest that the observed relation might be the smoking gun of galaxies forming in a hierarchical clustering scenario.
Fil: Sillero Ros, Guillermo Emanuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Tissera, Patricia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Andrés Bello; Chile
Fil: Garcia Lambas, Diego Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Michel-Dansac, Leopold Laurent Joseph. Centre de Recherche Astrophysique de Lyon; Francia. Université Claude Bernard Lyon 1; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
DARK MATTER
GALAXIES: ABUNDANCES
GALAXIES: EVOLUTION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/64869
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/64869
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The evolution of the metallicity gradient and the star formation efficiency in disc galaxiesSillero Ros, Guillermo EmanuelTissera, Patricia BeatrizGarcia Lambas, Diego RodolfoMichel-Dansac, Leopold Laurent JosephDARK MATTERGALAXIES: ABUNDANCESGALAXIES: EVOLUTIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the oxygen abundance profiles of the gas-phase components in hydrodynamical simulations of pre-prepared disc galaxies including major mergers, close encounters and isolated configurations. We analyse the evolution of the slope of oxygen abundance profiles and the specific star formation rate (sSFR) along their evolution. We find that galaxy-galaxy interactions could generate either positive or negative gas-phase oxygen profiles, depending on the state of evolution. Along the interaction, galaxies are found to have metallicity gradients and sSFR consistent with observations, on average. Strong gas inflows produced during galaxy- galaxy interactions or as a result of strong local instabilities in gas-rich discs are able to produce both a quick dilution of the central gas-phase metallicity and a sudden increase of the sSFR. Our simulations show that, during these events, a correlation between the metallicity gradients and the sSFR can be set up if strong gas inflows are triggered in the central regions in short time-scales. Simulated galaxies without experiencing strong disturbances evolve smoothly without modifying the metallicity gradients. Gas-rich systems show large dispersion along the correlation. The dispersion in the observed relation could be interpreted as produced by the combination of galaxies with different gas-richness and/or experiencing different types of interactions. Hence, our findings suggest that the observed relation might be the smoking gun of galaxies forming in a hierarchical clustering scenario.Fil: Sillero Ros, Guillermo Emanuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Tissera, Patricia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Andrés Bello; ChileFil: Garcia Lambas, Diego Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Michel-Dansac, Leopold Laurent Joseph. Centre de Recherche Astrophysique de Lyon; Francia. Université Claude Bernard Lyon 1; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaWiley Blackwell Publishing, Inc2017-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/64869Sillero Ros, Guillermo Emanuel; Tissera, Patricia Beatriz; Garcia Lambas, Diego Rodolfo; Michel-Dansac, Leopold Laurent Joseph; The evolution of the metallicity gradient and the star formation efficiency in disc galaxies; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 472; 4; 12-2017; 4404-44130035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/472/4/4404/4103564info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx2265info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:52:31Zoai:ri.conicet.gov.ar:11336/64869instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:52:31.954CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The evolution of the metallicity gradient and the star formation efficiency in disc galaxies
title The evolution of the metallicity gradient and the star formation efficiency in disc galaxies
spellingShingle The evolution of the metallicity gradient and the star formation efficiency in disc galaxies
Sillero Ros, Guillermo Emanuel
DARK MATTER
GALAXIES: ABUNDANCES
GALAXIES: EVOLUTION
title_short The evolution of the metallicity gradient and the star formation efficiency in disc galaxies
title_full The evolution of the metallicity gradient and the star formation efficiency in disc galaxies
title_fullStr The evolution of the metallicity gradient and the star formation efficiency in disc galaxies
title_full_unstemmed The evolution of the metallicity gradient and the star formation efficiency in disc galaxies
title_sort The evolution of the metallicity gradient and the star formation efficiency in disc galaxies
dc.creator.none.fl_str_mv Sillero Ros, Guillermo Emanuel
Tissera, Patricia Beatriz
Garcia Lambas, Diego Rodolfo
Michel-Dansac, Leopold Laurent Joseph
author Sillero Ros, Guillermo Emanuel
author_facet Sillero Ros, Guillermo Emanuel
Tissera, Patricia Beatriz
Garcia Lambas, Diego Rodolfo
Michel-Dansac, Leopold Laurent Joseph
author_role author
author2 Tissera, Patricia Beatriz
Garcia Lambas, Diego Rodolfo
Michel-Dansac, Leopold Laurent Joseph
author2_role author
author
author
dc.subject.none.fl_str_mv DARK MATTER
GALAXIES: ABUNDANCES
GALAXIES: EVOLUTION
topic DARK MATTER
GALAXIES: ABUNDANCES
GALAXIES: EVOLUTION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We study the oxygen abundance profiles of the gas-phase components in hydrodynamical simulations of pre-prepared disc galaxies including major mergers, close encounters and isolated configurations. We analyse the evolution of the slope of oxygen abundance profiles and the specific star formation rate (sSFR) along their evolution. We find that galaxy-galaxy interactions could generate either positive or negative gas-phase oxygen profiles, depending on the state of evolution. Along the interaction, galaxies are found to have metallicity gradients and sSFR consistent with observations, on average. Strong gas inflows produced during galaxy- galaxy interactions or as a result of strong local instabilities in gas-rich discs are able to produce both a quick dilution of the central gas-phase metallicity and a sudden increase of the sSFR. Our simulations show that, during these events, a correlation between the metallicity gradients and the sSFR can be set up if strong gas inflows are triggered in the central regions in short time-scales. Simulated galaxies without experiencing strong disturbances evolve smoothly without modifying the metallicity gradients. Gas-rich systems show large dispersion along the correlation. The dispersion in the observed relation could be interpreted as produced by the combination of galaxies with different gas-richness and/or experiencing different types of interactions. Hence, our findings suggest that the observed relation might be the smoking gun of galaxies forming in a hierarchical clustering scenario.
Fil: Sillero Ros, Guillermo Emanuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Tissera, Patricia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Andrés Bello; Chile
Fil: Garcia Lambas, Diego Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Michel-Dansac, Leopold Laurent Joseph. Centre de Recherche Astrophysique de Lyon; Francia. Université Claude Bernard Lyon 1; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description We study the oxygen abundance profiles of the gas-phase components in hydrodynamical simulations of pre-prepared disc galaxies including major mergers, close encounters and isolated configurations. We analyse the evolution of the slope of oxygen abundance profiles and the specific star formation rate (sSFR) along their evolution. We find that galaxy-galaxy interactions could generate either positive or negative gas-phase oxygen profiles, depending on the state of evolution. Along the interaction, galaxies are found to have metallicity gradients and sSFR consistent with observations, on average. Strong gas inflows produced during galaxy- galaxy interactions or as a result of strong local instabilities in gas-rich discs are able to produce both a quick dilution of the central gas-phase metallicity and a sudden increase of the sSFR. Our simulations show that, during these events, a correlation between the metallicity gradients and the sSFR can be set up if strong gas inflows are triggered in the central regions in short time-scales. Simulated galaxies without experiencing strong disturbances evolve smoothly without modifying the metallicity gradients. Gas-rich systems show large dispersion along the correlation. The dispersion in the observed relation could be interpreted as produced by the combination of galaxies with different gas-richness and/or experiencing different types of interactions. Hence, our findings suggest that the observed relation might be the smoking gun of galaxies forming in a hierarchical clustering scenario.
publishDate 2017
dc.date.none.fl_str_mv 2017-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/64869
Sillero Ros, Guillermo Emanuel; Tissera, Patricia Beatriz; Garcia Lambas, Diego Rodolfo; Michel-Dansac, Leopold Laurent Joseph; The evolution of the metallicity gradient and the star formation efficiency in disc galaxies; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 472; 4; 12-2017; 4404-4413
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/64869
identifier_str_mv Sillero Ros, Guillermo Emanuel; Tissera, Patricia Beatriz; Garcia Lambas, Diego Rodolfo; Michel-Dansac, Leopold Laurent Joseph; The evolution of the metallicity gradient and the star formation efficiency in disc galaxies; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 472; 4; 12-2017; 4404-4413
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/472/4/4404/4103564
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx2265
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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