Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data

Autores
Chalela Garcia, Martin; Gonzalez, Elizabeth Johana; Makler, Martín; Garcia Lambas, Diego Rodolfo; Pereira, Maria E.S.; O'Mill, Ana Laura; Shan, Huan Yuan
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work we present a lensing study of Compact Groups (CGs) using data obtained from the high-quality Canada-France-Hawaii Telescope Stripe 82 Survey. Using stacking techniques we obtain the average density contrast profile. We analyse the lensing signal dependence on the groups' surface brightness and morphological content, for CGs in the redshift range z = 0.2-0.4.We obtain a larger lensing signal for CGs with higher surface brightness, probably due to their lower contamination by interlopers. Also, we find a strong dependence of the lensing signal on the group concentration parameter, with the most concentrated quintile showing a significant lensing signal, consistent with an isothermal sphere with σV = 336 ± 28 km s-1 and a NFW profile with R200 = 0.60 ± 0.05 h-1 70 Mpc. We also compare lensing results with dynamical estimates finding a good agreement with lensing determinations for CGs with higher surface brightness and higher concentration indexes. On the other hand, CGs that are more contaminated by interlopers show larger dynamical dispersions, since interlopers bias dynamical estimates to larger values, although the lensing signal is weakened.
Fil: Chalela Garcia, Martin. 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: Gonzalez, Elizabeth Johana. 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: Makler, Martín. Centro Brasileiro de Pesquisas Físicas; Brasil
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: Pereira, Maria E.S.. Centro Brasileiro de Pesquisas Físicas; Brasil
Fil: O'Mill, Ana Laura. Instituto de Astronomia Teorica y Experimental; Argentina
Fil: Shan, Huan Yuan. Argelander-Institut fur Astronomie; Alemania
Materia
GALAXIES: GROUPS: GENERAL
GRAVITATIONAL LENSING: WEAK
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:11336/86281
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/86281
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 dataChalela Garcia, MartinGonzalez, Elizabeth JohanaMakler, MartínGarcia Lambas, Diego RodolfoPereira, Maria E.S.O'Mill, Ana LauraShan, Huan YuanGALAXIES: GROUPS: GENERALGRAVITATIONAL LENSING: WEAKhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In this work we present a lensing study of Compact Groups (CGs) using data obtained from the high-quality Canada-France-Hawaii Telescope Stripe 82 Survey. Using stacking techniques we obtain the average density contrast profile. We analyse the lensing signal dependence on the groups' surface brightness and morphological content, for CGs in the redshift range z = 0.2-0.4.We obtain a larger lensing signal for CGs with higher surface brightness, probably due to their lower contamination by interlopers. Also, we find a strong dependence of the lensing signal on the group concentration parameter, with the most concentrated quintile showing a significant lensing signal, consistent with an isothermal sphere with σV = 336 ± 28 km s-1 and a NFW profile with R200 = 0.60 ± 0.05 h-1 70 Mpc. We also compare lensing results with dynamical estimates finding a good agreement with lensing determinations for CGs with higher surface brightness and higher concentration indexes. On the other hand, CGs that are more contaminated by interlopers show larger dynamical dispersions, since interlopers bias dynamical estimates to larger values, although the lensing signal is weakened.Fil: Chalela Garcia, Martin. 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: Gonzalez, Elizabeth Johana. 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: Makler, Martín. Centro Brasileiro de Pesquisas Físicas; BrasilFil: 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: Pereira, Maria E.S.. Centro Brasileiro de Pesquisas Físicas; BrasilFil: O'Mill, Ana Laura. Instituto de Astronomia Teorica y Experimental; ArgentinaFil: Shan, Huan Yuan. Argelander-Institut fur Astronomie; AlemaniaWiley Blackwell Publishing, Inc2018-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/86281Chalela Garcia, Martin; Gonzalez, Elizabeth Johana; Makler, Martín; Garcia Lambas, Diego Rodolfo; Pereira, Maria E.S.; et al.; Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 479; 1; 9-2018; 1170-11790035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty1537info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/479/1/1170/5035847?redirectedFrom=fulltextinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:08:03Zoai:ri.conicet.gov.ar:11336/86281instacron: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:34982025-10-22 12:08:04.047CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data
title Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data
spellingShingle Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data
Chalela Garcia, Martin
GALAXIES: GROUPS: GENERAL
GRAVITATIONAL LENSING: WEAK
title_short Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data
title_full Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data
title_fullStr Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data
title_full_unstemmed Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data
title_sort Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data
dc.creator.none.fl_str_mv Chalela Garcia, Martin
Gonzalez, Elizabeth Johana
Makler, Martín
Garcia Lambas, Diego Rodolfo
Pereira, Maria E.S.
O'Mill, Ana Laura
Shan, Huan Yuan
author Chalela Garcia, Martin
author_facet Chalela Garcia, Martin
Gonzalez, Elizabeth Johana
Makler, Martín
Garcia Lambas, Diego Rodolfo
Pereira, Maria E.S.
O'Mill, Ana Laura
Shan, Huan Yuan
author_role author
author2 Gonzalez, Elizabeth Johana
Makler, Martín
Garcia Lambas, Diego Rodolfo
Pereira, Maria E.S.
O'Mill, Ana Laura
Shan, Huan Yuan
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv GALAXIES: GROUPS: GENERAL
GRAVITATIONAL LENSING: WEAK
topic GALAXIES: GROUPS: GENERAL
GRAVITATIONAL LENSING: WEAK
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this work we present a lensing study of Compact Groups (CGs) using data obtained from the high-quality Canada-France-Hawaii Telescope Stripe 82 Survey. Using stacking techniques we obtain the average density contrast profile. We analyse the lensing signal dependence on the groups' surface brightness and morphological content, for CGs in the redshift range z = 0.2-0.4.We obtain a larger lensing signal for CGs with higher surface brightness, probably due to their lower contamination by interlopers. Also, we find a strong dependence of the lensing signal on the group concentration parameter, with the most concentrated quintile showing a significant lensing signal, consistent with an isothermal sphere with σV = 336 ± 28 km s-1 and a NFW profile with R200 = 0.60 ± 0.05 h-1 70 Mpc. We also compare lensing results with dynamical estimates finding a good agreement with lensing determinations for CGs with higher surface brightness and higher concentration indexes. On the other hand, CGs that are more contaminated by interlopers show larger dynamical dispersions, since interlopers bias dynamical estimates to larger values, although the lensing signal is weakened.
Fil: Chalela Garcia, Martin. 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: Gonzalez, Elizabeth Johana. 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: Makler, Martín. Centro Brasileiro de Pesquisas Físicas; Brasil
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: Pereira, Maria E.S.. Centro Brasileiro de Pesquisas Físicas; Brasil
Fil: O'Mill, Ana Laura. Instituto de Astronomia Teorica y Experimental; Argentina
Fil: Shan, Huan Yuan. Argelander-Institut fur Astronomie; Alemania
description In this work we present a lensing study of Compact Groups (CGs) using data obtained from the high-quality Canada-France-Hawaii Telescope Stripe 82 Survey. Using stacking techniques we obtain the average density contrast profile. We analyse the lensing signal dependence on the groups' surface brightness and morphological content, for CGs in the redshift range z = 0.2-0.4.We obtain a larger lensing signal for CGs with higher surface brightness, probably due to their lower contamination by interlopers. Also, we find a strong dependence of the lensing signal on the group concentration parameter, with the most concentrated quintile showing a significant lensing signal, consistent with an isothermal sphere with σV = 336 ± 28 km s-1 and a NFW profile with R200 = 0.60 ± 0.05 h-1 70 Mpc. We also compare lensing results with dynamical estimates finding a good agreement with lensing determinations for CGs with higher surface brightness and higher concentration indexes. On the other hand, CGs that are more contaminated by interlopers show larger dynamical dispersions, since interlopers bias dynamical estimates to larger values, although the lensing signal is weakened.
publishDate 2018
dc.date.none.fl_str_mv 2018-09
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/11336/86281
Chalela Garcia, Martin; Gonzalez, Elizabeth Johana; Makler, Martín; Garcia Lambas, Diego Rodolfo; Pereira, Maria E.S.; et al.; Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 479; 1; 9-2018; 1170-1179
0035-8711
1365-2966
CONICET Digital
CONICET
url http://hdl.handle.net/11336/86281
identifier_str_mv Chalela Garcia, Martin; Gonzalez, Elizabeth Johana; Makler, Martín; Garcia Lambas, Diego Rodolfo; Pereira, Maria E.S.; et al.; Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 479; 1; 9-2018; 1170-1179
0035-8711
1365-2966
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty1537
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/479/1/1170/5035847?redirectedFrom=fulltext
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
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
_version_ 1846782449256759296
score 13.199325

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