Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster system

Autores
Escudero, Carlos Gabriel; Faifer, Favio Raúl; Smith Castelli, Analia Viviana; Norris, Mark A; Forte, Juan Carlos
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a photometric study of the field lenticular galaxy NGC 4546 using Gemini/GMOS imaging in griz. We perform a 2D image decomposition of the surface brightness distribution of the galaxy using GALFIT , finding that four components adequately describe it. The subtraction of this model from our images and the construction of a colour map allow us to examine in great detail the asymmetric dust structures around the galactic centre. In addition, we perform a detailed analysis of the globular cluster (GC) system of NGC 4546. Using a Gaussian Mixture Model algorithm in the colour-colour plane we detected hints of multiple groups of GC candidates: the classic blue and red subpopulations, a group with intermediate colours that present a concentrated spatial distribution towards the galaxy, and an additional group towards the red end of the colour distribution. We estimate a total GC population for NGC 4546 of 390+-60 members and specific frequency S N = 3.3+-0.7, which is relatively high compared to the typical value for galaxies of similar masses and environment. We suggest that the unusual GC population substructures were possibly formed during the interaction that led to the formation of the young ultra-compact dwarf (NGC 4546-UCD1) found in this system. Finally, we estimate the distance modulus of NGC 4546 by analyzing its luminosity function, resulting in (m-M ) = 30.75+-0.12 mag (14.1 Mpc).
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
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
Fil: Smith Castelli, Analia Viviana. 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: Norris, Mark A. Jeremiah Horrocks Institute; Reino Unido
Fil: Forte, Juan Carlos. Academia Nacional de Ciencias de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
LENTICULAR GALAXY
PHOTOMETRY
GLOBULAR CLUSTERS
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:11336/144439
Acceder
id CONICETDig_bb38cb73d3b00d74c95acae6502867e1
oai_identifier_str oai:ri.conicet.gov.ar:11336/144439
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster systemEscudero, Carlos GabrielFaifer, Favio RaúlSmith Castelli, Analia VivianaNorris, Mark AForte, Juan CarlosLENTICULAR GALAXYPHOTOMETRYGLOBULAR CLUSTERShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a photometric study of the field lenticular galaxy NGC 4546 using Gemini/GMOS imaging in griz. We perform a 2D image decomposition of the surface brightness distribution of the galaxy using GALFIT , finding that four components adequately describe it. The subtraction of this model from our images and the construction of a colour map allow us to examine in great detail the asymmetric dust structures around the galactic centre. In addition, we perform a detailed analysis of the globular cluster (GC) system of NGC 4546. Using a Gaussian Mixture Model algorithm in the colour-colour plane we detected hints of multiple groups of GC candidates: the classic blue and red subpopulations, a group with intermediate colours that present a concentrated spatial distribution towards the galaxy, and an additional group towards the red end of the colour distribution. We estimate a total GC population for NGC 4546 of 390+-60 members and specific frequency S N = 3.3+-0.7, which is relatively high compared to the typical value for galaxies of similar masses and environment. We suggest that the unusual GC population substructures were possibly formed during the interaction that led to the formation of the young ultra-compact dwarf (NGC 4546-UCD1) found in this system. Finally, we estimate the distance modulus of NGC 4546 by analyzing its luminosity function, resulting in (m-M ) = 30.75+-0.12 mag (14.1 Mpc).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; 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; ArgentinaFil: Smith Castelli, Analia Viviana. 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: Norris, Mark A. Jeremiah Horrocks Institute; Reino UnidoFil: Forte, Juan Carlos. Academia Nacional de Ciencias de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaWiley Blackwell Publishing, Inc2020-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/144439Escudero, Carlos Gabriel; Faifer, Favio Raúl; Smith Castelli, Analia Viviana; Norris, Mark A; Forte, Juan Carlos; Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster system; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 493; 2; 4-2020; 2253-22700035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/493/2/2253/5731864info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/staa392info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:22:30Zoai:ri.conicet.gov.ar:11336/144439instacron: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 10:22:30.937CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster system
title Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster system
spellingShingle Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster system
Escudero, Carlos Gabriel
LENTICULAR GALAXY
PHOTOMETRY
GLOBULAR CLUSTERS
title_short Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster system
title_full Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster system
title_fullStr Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster system
title_full_unstemmed Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster system
title_sort Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster system
dc.creator.none.fl_str_mv Escudero, Carlos Gabriel
Faifer, Favio Raúl
Smith Castelli, Analia Viviana
Norris, Mark A
Forte, Juan Carlos
author Escudero, Carlos Gabriel
author_facet Escudero, Carlos Gabriel
Faifer, Favio Raúl
Smith Castelli, Analia Viviana
Norris, Mark A
Forte, Juan Carlos
author_role author
author2 Faifer, Favio Raúl
Smith Castelli, Analia Viviana
Norris, Mark A
Forte, Juan Carlos
author2_role author
author
author
author
dc.subject.none.fl_str_mv LENTICULAR GALAXY
PHOTOMETRY
GLOBULAR CLUSTERS
topic LENTICULAR GALAXY
PHOTOMETRY
GLOBULAR CLUSTERS
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 present a photometric study of the field lenticular galaxy NGC 4546 using Gemini/GMOS imaging in griz. We perform a 2D image decomposition of the surface brightness distribution of the galaxy using GALFIT , finding that four components adequately describe it. The subtraction of this model from our images and the construction of a colour map allow us to examine in great detail the asymmetric dust structures around the galactic centre. In addition, we perform a detailed analysis of the globular cluster (GC) system of NGC 4546. Using a Gaussian Mixture Model algorithm in the colour-colour plane we detected hints of multiple groups of GC candidates: the classic blue and red subpopulations, a group with intermediate colours that present a concentrated spatial distribution towards the galaxy, and an additional group towards the red end of the colour distribution. We estimate a total GC population for NGC 4546 of 390+-60 members and specific frequency S N = 3.3+-0.7, which is relatively high compared to the typical value for galaxies of similar masses and environment. We suggest that the unusual GC population substructures were possibly formed during the interaction that led to the formation of the young ultra-compact dwarf (NGC 4546-UCD1) found in this system. Finally, we estimate the distance modulus of NGC 4546 by analyzing its luminosity function, resulting in (m-M ) = 30.75+-0.12 mag (14.1 Mpc).
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
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
Fil: Smith Castelli, Analia Viviana. 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: Norris, Mark A. Jeremiah Horrocks Institute; Reino Unido
Fil: Forte, Juan Carlos. Academia Nacional de Ciencias de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description We present a photometric study of the field lenticular galaxy NGC 4546 using Gemini/GMOS imaging in griz. We perform a 2D image decomposition of the surface brightness distribution of the galaxy using GALFIT , finding that four components adequately describe it. The subtraction of this model from our images and the construction of a colour map allow us to examine in great detail the asymmetric dust structures around the galactic centre. In addition, we perform a detailed analysis of the globular cluster (GC) system of NGC 4546. Using a Gaussian Mixture Model algorithm in the colour-colour plane we detected hints of multiple groups of GC candidates: the classic blue and red subpopulations, a group with intermediate colours that present a concentrated spatial distribution towards the galaxy, and an additional group towards the red end of the colour distribution. We estimate a total GC population for NGC 4546 of 390+-60 members and specific frequency S N = 3.3+-0.7, which is relatively high compared to the typical value for galaxies of similar masses and environment. We suggest that the unusual GC population substructures were possibly formed during the interaction that led to the formation of the young ultra-compact dwarf (NGC 4546-UCD1) found in this system. Finally, we estimate the distance modulus of NGC 4546 by analyzing its luminosity function, resulting in (m-M ) = 30.75+-0.12 mag (14.1 Mpc).
publishDate 2020
dc.date.none.fl_str_mv 2020-04
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/11336/144439
Escudero, Carlos Gabriel; Faifer, Favio Raúl; Smith Castelli, Analia Viviana; Norris, Mark A; Forte, Juan Carlos; Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster system; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 493; 2; 4-2020; 2253-2270
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/144439
identifier_str_mv Escudero, Carlos Gabriel; Faifer, Favio Raúl; Smith Castelli, Analia Viviana; Norris, Mark A; Forte, Juan Carlos; Field/isolated lenticular galaxies with high SN values: the case of NGC 4546 and its globular cluster system; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 493; 2; 4-2020; 2253-2270
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/493/2/2253/5731864
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/staa392
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
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_ 1844614216789524480
score 13.070432

Publicaciones similares