Effects of superstructure environment on galaxy groups
- Autores
- Luparello, Heliana E.; Lares, Marcelo; Yaryura, Yamila; Paz, Dante; Padilla, N.; García Lambas, Diego
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We analyse properties of galaxy groups and their dependence on the large-scale environment as defined by superstructures. We find that group–galaxy cross–correlations depend only on group properties regardless the groups reside in superstructures. This indicates that the total galaxy density profile around groups is independent of the global environment. At a given global luminosity, a proxy to group total mass, groups have a larger stellar mass content by a factor 1.3, a relative excess independent of the group luminosity. Groups in superstructures have 40 per cent higher velocity dispersions and systematically larger minimal enclosing radii. We also find that the stellar population of galaxies in groups in superstructures is systematically older as infered from the galaxy spectra Dn 4000 parameter. Although the galaxy number density profile of groups is independent of environment, the star–formation rate and stellar mass profile of the groups residing in superstructures differs from groups elsewhere. For groups residing in superstructures, the combination of a larger stellar mass content and star–formation rate produces a larger time–scale for star formation regardless the distance to the group center. Our results provide evidence that groups in superstructures formed earlier than elsewhere, as expected in the assembly bias scenario.
publishedVersion - Materia
-
Estructura en gran escala
Estadística
Análisis de datos
Large scale structure of the universe
Statistics
Data analysis - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- Repositorio
- Institución
- Universidad Nacional de Córdoba
- OAI Identificador
- oai:rdu.unc.edu.ar:11086/1655
Ver los metadatos del registro completo
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oai:rdu.unc.edu.ar:11086/1655 |
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2572 |
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Repositorio Digital Universitario (UNC) |
spelling |
Effects of superstructure environment on galaxy groupsLuparello, Heliana E.Lares, MarceloYaryura, YamilaPaz, DantePadilla, N.García Lambas, DiegoEstructura en gran escalaEstadísticaAnálisis de datosLarge scale structure of the universeStatisticsData analysisWe analyse properties of galaxy groups and their dependence on the large-scale environment as defined by superstructures. We find that group–galaxy cross–correlations depend only on group properties regardless the groups reside in superstructures. This indicates that the total galaxy density profile around groups is independent of the global environment. At a given global luminosity, a proxy to group total mass, groups have a larger stellar mass content by a factor 1.3, a relative excess independent of the group luminosity. Groups in superstructures have 40 per cent higher velocity dispersions and systematically larger minimal enclosing radii. We also find that the stellar population of galaxies in groups in superstructures is systematically older as infered from the galaxy spectra Dn 4000 parameter. Although the galaxy number density profile of groups is independent of environment, the star–formation rate and stellar mass profile of the groups residing in superstructures differs from groups elsewhere. For groups residing in superstructures, the combination of a larger stellar mass content and star–formation rate produces a larger time–scale for star formation regardless the distance to the group center. Our results provide evidence that groups in superstructures formed earlier than elsewhere, as expected in the assembly bias scenario.publishedVersionOxford University Press2013-06-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfMonthly Notices of the Royal Astronomical Society (June 21, 2013) 432 (2): 1367-1374http://dx.doi.org/10.1093/mnras/stt556http://hdl.handle.net/11086/1655enginfo:eu-repo/semantics/openAccessreponame:Repositorio Digital Universitario (UNC)instname:Universidad Nacional de Córdobainstacron:UNC2025-09-29T13:42:40Zoai:rdu.unc.edu.ar:11086/1655Institucionalhttps://rdu.unc.edu.ar/Universidad públicaNo correspondehttp://rdu.unc.edu.ar/oai/snrdoca.unc@gmail.comArgentinaNo correspondeNo correspondeNo correspondeopendoar:25722025-09-29 13:42:41.274Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdobafalse |
dc.title.none.fl_str_mv |
Effects of superstructure environment on galaxy groups |
title |
Effects of superstructure environment on galaxy groups |
spellingShingle |
Effects of superstructure environment on galaxy groups Luparello, Heliana E. Estructura en gran escala Estadística Análisis de datos Large scale structure of the universe Statistics Data analysis |
title_short |
Effects of superstructure environment on galaxy groups |
title_full |
Effects of superstructure environment on galaxy groups |
title_fullStr |
Effects of superstructure environment on galaxy groups |
title_full_unstemmed |
Effects of superstructure environment on galaxy groups |
title_sort |
Effects of superstructure environment on galaxy groups |
dc.creator.none.fl_str_mv |
Luparello, Heliana E. Lares, Marcelo Yaryura, Yamila Paz, Dante Padilla, N. García Lambas, Diego |
author |
Luparello, Heliana E. |
author_facet |
Luparello, Heliana E. Lares, Marcelo Yaryura, Yamila Paz, Dante Padilla, N. García Lambas, Diego |
author_role |
author |
author2 |
Lares, Marcelo Yaryura, Yamila Paz, Dante Padilla, N. García Lambas, Diego |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Estructura en gran escala Estadística Análisis de datos Large scale structure of the universe Statistics Data analysis |
topic |
Estructura en gran escala Estadística Análisis de datos Large scale structure of the universe Statistics Data analysis |
dc.description.none.fl_txt_mv |
We analyse properties of galaxy groups and their dependence on the large-scale environment as defined by superstructures. We find that group–galaxy cross–correlations depend only on group properties regardless the groups reside in superstructures. This indicates that the total galaxy density profile around groups is independent of the global environment. At a given global luminosity, a proxy to group total mass, groups have a larger stellar mass content by a factor 1.3, a relative excess independent of the group luminosity. Groups in superstructures have 40 per cent higher velocity dispersions and systematically larger minimal enclosing radii. We also find that the stellar population of galaxies in groups in superstructures is systematically older as infered from the galaxy spectra Dn 4000 parameter. Although the galaxy number density profile of groups is independent of environment, the star–formation rate and stellar mass profile of the groups residing in superstructures differs from groups elsewhere. For groups residing in superstructures, the combination of a larger stellar mass content and star–formation rate produces a larger time–scale for star formation regardless the distance to the group center. Our results provide evidence that groups in superstructures formed earlier than elsewhere, as expected in the assembly bias scenario. publishedVersion |
description |
We analyse properties of galaxy groups and their dependence on the large-scale environment as defined by superstructures. We find that group–galaxy cross–correlations depend only on group properties regardless the groups reside in superstructures. This indicates that the total galaxy density profile around groups is independent of the global environment. At a given global luminosity, a proxy to group total mass, groups have a larger stellar mass content by a factor 1.3, a relative excess independent of the group luminosity. Groups in superstructures have 40 per cent higher velocity dispersions and systematically larger minimal enclosing radii. We also find that the stellar population of galaxies in groups in superstructures is systematically older as infered from the galaxy spectra Dn 4000 parameter. Although the galaxy number density profile of groups is independent of environment, the star–formation rate and stellar mass profile of the groups residing in superstructures differs from groups elsewhere. For groups residing in superstructures, the combination of a larger stellar mass content and star–formation rate produces a larger time–scale for star formation regardless the distance to the group center. Our results provide evidence that groups in superstructures formed earlier than elsewhere, as expected in the assembly bias scenario. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-06-21 |
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 |
Monthly Notices of the Royal Astronomical Society (June 21, 2013) 432 (2): 1367-1374 http://dx.doi.org/10.1093/mnras/stt556 http://hdl.handle.net/11086/1655 |
identifier_str_mv |
Monthly Notices of the Royal Astronomical Society (June 21, 2013) 432 (2): 1367-1374 |
url |
http://dx.doi.org/10.1093/mnras/stt556 http://hdl.handle.net/11086/1655 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
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:Repositorio Digital Universitario (UNC) instname:Universidad Nacional de Córdoba instacron:UNC |
reponame_str |
Repositorio Digital Universitario (UNC) |
collection |
Repositorio Digital Universitario (UNC) |
instname_str |
Universidad Nacional de Córdoba |
instacron_str |
UNC |
institution |
UNC |
repository.name.fl_str_mv |
Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdoba |
repository.mail.fl_str_mv |
oca.unc@gmail.com |
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1844618933838020608 |
score |
13.070432 |