Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074

Autores
Guevara, Natalia; Escudero, Carlos Gabriel; Faifer, Favio Raúl
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Early-type dwarf galaxies constitute a prevalent population in the central regions of rich groups and clusters in the local Universe. These low-luminosity and low-mass stellar systems play a fundamental role in the assembly of the luminous galaxies observed today, according to the ΛCDM hierarchical theory. The origin of early-type dwarfs has been linked to the transformation of disk galaxies interacting with the intracluster medium, especially in dense environments. However, the existence of low-luminosity early-type galaxies in low-density environments presents a challenge to this scenario. This study presents a comprehensive photometric and spectroscopic analysis of the early-type dwarf galaxy CGCG014-074 using deep GEMINI+GMOS data, focusing on its peculiarities and evolutionary implications. CGCG014-074 exhibits distinct features, including a rotating inner disk, an extended stellar formation with a quiescent phase since about 2 Gyr ago, and the presence of boxy isophotes. From the kinematic analysis, we confirm CGCG014-074 as a nucleated early-type dwarf galaxy with embedded disk. The study of its stellar population parameters using different methods provides significant insights into the galaxy´s evolutionary history. These results show an old and metal-poor nucleus (~9.3 Gyr and [Z/H] ~ -0.84 dex), while the stellar disk is younger (~4.4 Gyr) with a higher metallicity ([Z/H] ~ -0.40 dex). These distinctive features collectively position CGCG014-074 as a likely building block galaxy that has evolved passively throughout its history.
Fil: Guevara, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Escudero, Carlos Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Faifer, Favio Raúl. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Materia
METHODS: OBSERVATIONAL
DWARF GALAXIES
GALAXY FORMATION
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:11336/265072
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074Guevara, NataliaEscudero, Carlos GabrielFaifer, Favio RaúlMETHODS: OBSERVATIONALDWARF GALAXIESGALAXY FORMATIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Early-type dwarf galaxies constitute a prevalent population in the central regions of rich groups and clusters in the local Universe. These low-luminosity and low-mass stellar systems play a fundamental role in the assembly of the luminous galaxies observed today, according to the ΛCDM hierarchical theory. The origin of early-type dwarfs has been linked to the transformation of disk galaxies interacting with the intracluster medium, especially in dense environments. However, the existence of low-luminosity early-type galaxies in low-density environments presents a challenge to this scenario. This study presents a comprehensive photometric and spectroscopic analysis of the early-type dwarf galaxy CGCG014-074 using deep GEMINI+GMOS data, focusing on its peculiarities and evolutionary implications. CGCG014-074 exhibits distinct features, including a rotating inner disk, an extended stellar formation with a quiescent phase since about 2 Gyr ago, and the presence of boxy isophotes. From the kinematic analysis, we confirm CGCG014-074 as a nucleated early-type dwarf galaxy with embedded disk. The study of its stellar population parameters using different methods provides significant insights into the galaxy´s evolutionary history. These results show an old and metal-poor nucleus (~9.3 Gyr and [Z/H] ~ -0.84 dex), while the stellar disk is younger (~4.4 Gyr) with a higher metallicity ([Z/H] ~ -0.40 dex). These distinctive features collectively position CGCG014-074 as a likely building block galaxy that has evolved passively throughout its history.Fil: Guevara, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Escudero, Carlos Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Faifer, Favio Raúl. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaWiley Blackwell Publishing, Inc2024-10info: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/11336/265072Guevara, Natalia; Escudero, Carlos Gabriel; Faifer, Favio Raúl; Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 533; 4; 10-2024; 4461-44710035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/533/4/4461/7748747info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stae2063info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:34:12Zoai:ri.conicet.gov.ar:11336/265072instacron: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 09:34:12.86CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074
title Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074
spellingShingle Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074
Guevara, Natalia
METHODS: OBSERVATIONAL
DWARF GALAXIES
GALAXY FORMATION
title_short Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074
title_full Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074
title_fullStr Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074
title_full_unstemmed Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074
title_sort Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074
dc.creator.none.fl_str_mv Guevara, Natalia
Escudero, Carlos Gabriel
Faifer, Favio Raúl
author Guevara, Natalia
author_facet Guevara, Natalia
Escudero, Carlos Gabriel
Faifer, Favio Raúl
author_role author
author2 Escudero, Carlos Gabriel
Faifer, Favio Raúl
author2_role author
author
dc.subject.none.fl_str_mv METHODS: OBSERVATIONAL
DWARF GALAXIES
GALAXY FORMATION
topic METHODS: OBSERVATIONAL
DWARF GALAXIES
GALAXY FORMATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Early-type dwarf galaxies constitute a prevalent population in the central regions of rich groups and clusters in the local Universe. These low-luminosity and low-mass stellar systems play a fundamental role in the assembly of the luminous galaxies observed today, according to the ΛCDM hierarchical theory. The origin of early-type dwarfs has been linked to the transformation of disk galaxies interacting with the intracluster medium, especially in dense environments. However, the existence of low-luminosity early-type galaxies in low-density environments presents a challenge to this scenario. This study presents a comprehensive photometric and spectroscopic analysis of the early-type dwarf galaxy CGCG014-074 using deep GEMINI+GMOS data, focusing on its peculiarities and evolutionary implications. CGCG014-074 exhibits distinct features, including a rotating inner disk, an extended stellar formation with a quiescent phase since about 2 Gyr ago, and the presence of boxy isophotes. From the kinematic analysis, we confirm CGCG014-074 as a nucleated early-type dwarf galaxy with embedded disk. The study of its stellar population parameters using different methods provides significant insights into the galaxy´s evolutionary history. These results show an old and metal-poor nucleus (~9.3 Gyr and [Z/H] ~ -0.84 dex), while the stellar disk is younger (~4.4 Gyr) with a higher metallicity ([Z/H] ~ -0.40 dex). These distinctive features collectively position CGCG014-074 as a likely building block galaxy that has evolved passively throughout its history.
Fil: Guevara, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Escudero, Carlos Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Faifer, Favio Raúl. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
description Early-type dwarf galaxies constitute a prevalent population in the central regions of rich groups and clusters in the local Universe. These low-luminosity and low-mass stellar systems play a fundamental role in the assembly of the luminous galaxies observed today, according to the ΛCDM hierarchical theory. The origin of early-type dwarfs has been linked to the transformation of disk galaxies interacting with the intracluster medium, especially in dense environments. However, the existence of low-luminosity early-type galaxies in low-density environments presents a challenge to this scenario. This study presents a comprehensive photometric and spectroscopic analysis of the early-type dwarf galaxy CGCG014-074 using deep GEMINI+GMOS data, focusing on its peculiarities and evolutionary implications. CGCG014-074 exhibits distinct features, including a rotating inner disk, an extended stellar formation with a quiescent phase since about 2 Gyr ago, and the presence of boxy isophotes. From the kinematic analysis, we confirm CGCG014-074 as a nucleated early-type dwarf galaxy with embedded disk. The study of its stellar population parameters using different methods provides significant insights into the galaxy´s evolutionary history. These results show an old and metal-poor nucleus (~9.3 Gyr and [Z/H] ~ -0.84 dex), while the stellar disk is younger (~4.4 Gyr) with a higher metallicity ([Z/H] ~ -0.40 dex). These distinctive features collectively position CGCG014-074 as a likely building block galaxy that has evolved passively throughout its history.
publishDate 2024
dc.date.none.fl_str_mv 2024-10
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/11336/265072
Guevara, Natalia; Escudero, Carlos Gabriel; Faifer, Favio Raúl; Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 533; 4; 10-2024; 4461-4471
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/265072
identifier_str_mv Guevara, Natalia; Escudero, Carlos Gabriel; Faifer, Favio Raúl; Understanding the origin of early-type dwarfs: the spectrophotometric study of CGCG014−074; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 533; 4; 10-2024; 4461-4471
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/533/4/4461/7748747
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stae2063
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 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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