Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systems
- Autores
- Cora, Sofia Alejandra; Tissera, Patricia Beatriz; Garcia Lambas, Diego Rodolfo; Mosconi, Mirta B.
- Año de publicación
- 2003
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We carried out a comprehensive analysis of the chemical properties of the interstellar medium (ISM) and the stellar population (SP) of current normal galaxies and their progenitors in a hierarchical clustering scenario. We compared the results with observations of Damped Lyman-α systems (DLAs) under the hypothesis that, at least, part of the observed DLAs could originate in the building blocks of today normal galaxies. We used a hydrodynamical cosmological code which includes star formation and chemical enrichment. Galaxy-like objects are identified at z = 0 and then followed back in time. Random line-of-sights (LOSs) are drawn through these structures in order to mimic Damped Lyman α systems. We then analysed the chemical properties of the ISM and SP along the LOSs. We found that the progenitors of current galaxies in the field with mean L < 0 .5 L∗ and virial circular velocity of 100 −250 km /sec could be the associated DLA galaxies. For these systems we detected a trend for hL/L ∗ito increase with redshift. We found moderate metallicity evolution for the [Zn/H], [Fe/H] and [Si/H]. However, when we applied the observational filter suggested by Boiss´e et al. (1998) in order to restrict the sample to the observed limits in densities and metallicities, we found mild evolution consistent with observational results that include dust corrections. The [Si/Fe] and [S/Fe] show weak α-enhancement in agreement with observations corrected by dust depletion. We found the α/Fe in the ISM and SP to have more homogeneous abundances than the [Fe/H] and [Zn/H] ones. In our models, the global metallicity evolution is driven by the high metallicity and high column density simulated DLAs which have low impact parameters (b < 5 kpc) and SPs with more than 10 8M⊙. Our results suggest that geometrical effects could be the mechanism responsible for the non-detectability of high metallicity and high column density DLAs. We found sub-DLAs to map preferentially the outskirts of the simulated DLA galaxies. Hence, they can contribute to the study of the metallicity of the galactic structure as a function of redshift. An analysis of the metallicity content of the ISMs and SPs of the galaxy-like objects as a function of redshift show the formation of a central stellar mass concentration with nearly solar metallicity at all redshift while stars in the outer parts of these objects have lower metallicities. The gas content gets enriched progressively with redshift and at all radii. The abundance properties of the galaxy-like objects and the simulated DLAs are the results of the contribution of supernovae type Ia and type II and gas infall from the dark matter haloes with a timing settled by their particular history of evolution in a hierarchical clustering scenario. Our results suggest that the mild evolution detected in the observations could arise from a conspiracy of all these processes.
Fil: Cora, Sofia Alejandra. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Tissera, Patricia Beatriz. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Garcia Lambas, Diego Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomia Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomia Teórica y Experimental; Argentina
Fil: Mosconi, Mirta B.. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina - Materia
-
HIERARCHICAL
CLUSTERING
SYSTEMS
SCENARIOS - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/22332
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Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systemsCora, Sofia AlejandraTissera, Patricia BeatrizGarcia Lambas, Diego RodolfoMosconi, Mirta B.HIERARCHICALCLUSTERINGSYSTEMSSCENARIOShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We carried out a comprehensive analysis of the chemical properties of the interstellar medium (ISM) and the stellar population (SP) of current normal galaxies and their progenitors in a hierarchical clustering scenario. We compared the results with observations of Damped Lyman-α systems (DLAs) under the hypothesis that, at least, part of the observed DLAs could originate in the building blocks of today normal galaxies. We used a hydrodynamical cosmological code which includes star formation and chemical enrichment. Galaxy-like objects are identified at z = 0 and then followed back in time. Random line-of-sights (LOSs) are drawn through these structures in order to mimic Damped Lyman α systems. We then analysed the chemical properties of the ISM and SP along the LOSs. We found that the progenitors of current galaxies in the field with mean L < 0 .5 L∗ and virial circular velocity of 100 −250 km /sec could be the associated DLA galaxies. For these systems we detected a trend for hL/L ∗ito increase with redshift. We found moderate metallicity evolution for the [Zn/H], [Fe/H] and [Si/H]. However, when we applied the observational filter suggested by Boiss´e et al. (1998) in order to restrict the sample to the observed limits in densities and metallicities, we found mild evolution consistent with observational results that include dust corrections. The [Si/Fe] and [S/Fe] show weak α-enhancement in agreement with observations corrected by dust depletion. We found the α/Fe in the ISM and SP to have more homogeneous abundances than the [Fe/H] and [Zn/H] ones. In our models, the global metallicity evolution is driven by the high metallicity and high column density simulated DLAs which have low impact parameters (b < 5 kpc) and SPs with more than 10 8M⊙. Our results suggest that geometrical effects could be the mechanism responsible for the non-detectability of high metallicity and high column density DLAs. We found sub-DLAs to map preferentially the outskirts of the simulated DLA galaxies. Hence, they can contribute to the study of the metallicity of the galactic structure as a function of redshift. An analysis of the metallicity content of the ISMs and SPs of the galaxy-like objects as a function of redshift show the formation of a central stellar mass concentration with nearly solar metallicity at all redshift while stars in the outer parts of these objects have lower metallicities. The gas content gets enriched progressively with redshift and at all radii. The abundance properties of the galaxy-like objects and the simulated DLAs are the results of the contribution of supernovae type Ia and type II and gas infall from the dark matter haloes with a timing settled by their particular history of evolution in a hierarchical clustering scenario. Our results suggest that the mild evolution detected in the observations could arise from a conspiracy of all these processes.Fil: Cora, Sofia Alejandra. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Tissera, Patricia Beatriz. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Garcia Lambas, Diego Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomia Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomia Teórica y Experimental; ArgentinaFil: Mosconi, Mirta B.. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; ArgentinaOxford University Press2003-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/22332Cora, Sofia Alejandra; Tissera, Patricia Beatriz; Garcia Lambas, Diego Rodolfo; Mosconi, Mirta B.; Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systems; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 343; 3; 12-2003; 959-9700035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1046/j.1365-8711.2003.06738.xinfo:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-8711.2003.06738.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:15:57Zoai:ri.conicet.gov.ar:11336/22332instacron: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 10:15:57.948CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systems |
title |
Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systems |
spellingShingle |
Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systems Cora, Sofia Alejandra HIERARCHICAL CLUSTERING SYSTEMS SCENARIOS |
title_short |
Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systems |
title_full |
Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systems |
title_fullStr |
Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systems |
title_full_unstemmed |
Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systems |
title_sort |
Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systems |
dc.creator.none.fl_str_mv |
Cora, Sofia Alejandra Tissera, Patricia Beatriz Garcia Lambas, Diego Rodolfo Mosconi, Mirta B. |
author |
Cora, Sofia Alejandra |
author_facet |
Cora, Sofia Alejandra Tissera, Patricia Beatriz Garcia Lambas, Diego Rodolfo Mosconi, Mirta B. |
author_role |
author |
author2 |
Tissera, Patricia Beatriz Garcia Lambas, Diego Rodolfo Mosconi, Mirta B. |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
HIERARCHICAL CLUSTERING SYSTEMS SCENARIOS |
topic |
HIERARCHICAL CLUSTERING SYSTEMS SCENARIOS |
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 carried out a comprehensive analysis of the chemical properties of the interstellar medium (ISM) and the stellar population (SP) of current normal galaxies and their progenitors in a hierarchical clustering scenario. We compared the results with observations of Damped Lyman-α systems (DLAs) under the hypothesis that, at least, part of the observed DLAs could originate in the building blocks of today normal galaxies. We used a hydrodynamical cosmological code which includes star formation and chemical enrichment. Galaxy-like objects are identified at z = 0 and then followed back in time. Random line-of-sights (LOSs) are drawn through these structures in order to mimic Damped Lyman α systems. We then analysed the chemical properties of the ISM and SP along the LOSs. We found that the progenitors of current galaxies in the field with mean L < 0 .5 L∗ and virial circular velocity of 100 −250 km /sec could be the associated DLA galaxies. For these systems we detected a trend for hL/L ∗ito increase with redshift. We found moderate metallicity evolution for the [Zn/H], [Fe/H] and [Si/H]. However, when we applied the observational filter suggested by Boiss´e et al. (1998) in order to restrict the sample to the observed limits in densities and metallicities, we found mild evolution consistent with observational results that include dust corrections. The [Si/Fe] and [S/Fe] show weak α-enhancement in agreement with observations corrected by dust depletion. We found the α/Fe in the ISM and SP to have more homogeneous abundances than the [Fe/H] and [Zn/H] ones. In our models, the global metallicity evolution is driven by the high metallicity and high column density simulated DLAs which have low impact parameters (b < 5 kpc) and SPs with more than 10 8M⊙. Our results suggest that geometrical effects could be the mechanism responsible for the non-detectability of high metallicity and high column density DLAs. We found sub-DLAs to map preferentially the outskirts of the simulated DLA galaxies. Hence, they can contribute to the study of the metallicity of the galactic structure as a function of redshift. An analysis of the metallicity content of the ISMs and SPs of the galaxy-like objects as a function of redshift show the formation of a central stellar mass concentration with nearly solar metallicity at all redshift while stars in the outer parts of these objects have lower metallicities. The gas content gets enriched progressively with redshift and at all radii. The abundance properties of the galaxy-like objects and the simulated DLAs are the results of the contribution of supernovae type Ia and type II and gas infall from the dark matter haloes with a timing settled by their particular history of evolution in a hierarchical clustering scenario. Our results suggest that the mild evolution detected in the observations could arise from a conspiracy of all these processes. Fil: Cora, Sofia Alejandra. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Tissera, Patricia Beatriz. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina Fil: Garcia Lambas, Diego Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomia Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomia Teórica y Experimental; Argentina Fil: Mosconi, Mirta B.. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina |
description |
We carried out a comprehensive analysis of the chemical properties of the interstellar medium (ISM) and the stellar population (SP) of current normal galaxies and their progenitors in a hierarchical clustering scenario. We compared the results with observations of Damped Lyman-α systems (DLAs) under the hypothesis that, at least, part of the observed DLAs could originate in the building blocks of today normal galaxies. We used a hydrodynamical cosmological code which includes star formation and chemical enrichment. Galaxy-like objects are identified at z = 0 and then followed back in time. Random line-of-sights (LOSs) are drawn through these structures in order to mimic Damped Lyman α systems. We then analysed the chemical properties of the ISM and SP along the LOSs. We found that the progenitors of current galaxies in the field with mean L < 0 .5 L∗ and virial circular velocity of 100 −250 km /sec could be the associated DLA galaxies. For these systems we detected a trend for hL/L ∗ito increase with redshift. We found moderate metallicity evolution for the [Zn/H], [Fe/H] and [Si/H]. However, when we applied the observational filter suggested by Boiss´e et al. (1998) in order to restrict the sample to the observed limits in densities and metallicities, we found mild evolution consistent with observational results that include dust corrections. The [Si/Fe] and [S/Fe] show weak α-enhancement in agreement with observations corrected by dust depletion. We found the α/Fe in the ISM and SP to have more homogeneous abundances than the [Fe/H] and [Zn/H] ones. In our models, the global metallicity evolution is driven by the high metallicity and high column density simulated DLAs which have low impact parameters (b < 5 kpc) and SPs with more than 10 8M⊙. Our results suggest that geometrical effects could be the mechanism responsible for the non-detectability of high metallicity and high column density DLAs. We found sub-DLAs to map preferentially the outskirts of the simulated DLA galaxies. Hence, they can contribute to the study of the metallicity of the galactic structure as a function of redshift. An analysis of the metallicity content of the ISMs and SPs of the galaxy-like objects as a function of redshift show the formation of a central stellar mass concentration with nearly solar metallicity at all redshift while stars in the outer parts of these objects have lower metallicities. The gas content gets enriched progressively with redshift and at all radii. The abundance properties of the galaxy-like objects and the simulated DLAs are the results of the contribution of supernovae type Ia and type II and gas infall from the dark matter haloes with a timing settled by their particular history of evolution in a hierarchical clustering scenario. Our results suggest that the mild evolution detected in the observations could arise from a conspiracy of all these processes. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-12 |
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/11336/22332 Cora, Sofia Alejandra; Tissera, Patricia Beatriz; Garcia Lambas, Diego Rodolfo; Mosconi, Mirta B.; Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systems; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 343; 3; 12-2003; 959-970 0035-8711 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/22332 |
identifier_str_mv |
Cora, Sofia Alejandra; Tissera, Patricia Beatriz; Garcia Lambas, Diego Rodolfo; Mosconi, Mirta B.; Building blocks in hierarchical clustering scenarios and their connection with damped Lyα systems; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 343; 3; 12-2003; 959-970 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-lookup/doi/10.1046/j.1365-8711.2003.06738.x info:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-8711.2003.06738.x |
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 application/pdf 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: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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1844614100288536576 |
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13.070432 |