Early-type galaxies in the Antlia cluster: Catalogue and isophotal analysis

Autores
Calderón, Juan Pablo; Bassino, Lilia Patricia; Cellone, Sergio Aldo; Gómez, Matías
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a statistical isophotal analysis of 138 early-type galaxies in the Antlia cluster, located at a distance of ∼ 35 Mpc. The observational material consists of CCD images of four 36 x 36 arcmin² fields obtained with the MOSAIC II camera at the Blanco 4-m telescope at Cerro Tololo Interamerican Observatory. Our present work supersedes previous Antlia studies in the sense that the covered area is four times larger, the limiting magnitude is MB ∼ −9.6 mag, and the surface photometry parameters of each galaxy are derived from Sersic model fits extrapolated to infinity. In a companion previous study we focused on the ´ scaling relations obtained by means of surface photometry, and now we present the data, on which the previous paper is based, the parameters of the isophotal fits as well as an isophotal analysis. For each galaxy, we derive isophotal shape parameters along the semimajor axis and search for correlations within different radial bins. Through extensive statistical tests, we also analyse the behaviour of these values against photometric and global parameters of the galaxies themselves. While some galaxies do display radial gradients in their ellipticity (⋲) and/or their Fourier coefficients, differences in mean values between adjacent regions are not statistically significant. Regarding Fourier coefficients, dwarf galaxies usually display gradients between all adjacent regions, while non-dwarfs tend to show this behaviour just between the two outermost regions. Globally, there is no obvious correlation between Fourier coefficients and luminosity for the whole magnitude range (−12≳ MV≳ -22); however, dwarfs display much higher dispersions at all radii.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
Galaxies: clusters: general
Galaxies: clusters: individual: Antlia
Galaxies: dwarf
Galaxies: elliptical and lenticular, cD
Galaxies: fundamental parameters
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/123905
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/123905
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Early-type galaxies in the Antlia cluster: Catalogue and isophotal analysisCalderón, Juan PabloBassino, Lilia PatriciaCellone, Sergio AldoGómez, MatíasCiencias AstronómicasGalaxies: clusters: generalGalaxies: clusters: individual: AntliaGalaxies: dwarfGalaxies: elliptical and lenticular, cDGalaxies: fundamental parametersWe present a statistical isophotal analysis of 138 early-type galaxies in the Antlia cluster, located at a distance of ∼ 35 Mpc. The observational material consists of CCD images of four 36 x 36 arcmin² fields obtained with the MOSAIC II camera at the Blanco 4-m telescope at Cerro Tololo Interamerican Observatory. Our present work supersedes previous Antlia studies in the sense that the covered area is four times larger, the limiting magnitude is MB ∼ −9.6 mag, and the surface photometry parameters of each galaxy are derived from Sersic model fits extrapolated to infinity. In a companion previous study we focused on the ´ scaling relations obtained by means of surface photometry, and now we present the data, on which the previous paper is based, the parameters of the isophotal fits as well as an isophotal analysis. For each galaxy, we derive isophotal shape parameters along the semimajor axis and search for correlations within different radial bins. Through extensive statistical tests, we also analyse the behaviour of these values against photometric and global parameters of the galaxies themselves. While some galaxies do display radial gradients in their ellipticity (⋲) and/or their Fourier coefficients, differences in mean values between adjacent regions are not statistically significant. Regarding Fourier coefficients, dwarf galaxies usually display gradients between all adjacent regions, while non-dwarfs tend to show this behaviour just between the two outermost regions. Globally, there is no obvious correlation between Fourier coefficients and luminosity for the whole magnitude range (−12≳ MV≳ -22); however, dwarfs display much higher dispersions at all radii.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1760-1771http://sedici.unlp.edu.ar/handle/10915/123905enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/issn/1365-2966info:eu-repo/semantics/altIdentifier/arxiv/1803.03678v1info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty611info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-10T12:32:02Zoai:sedici.unlp.edu.ar:10915/123905Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-10 12:32:02.285SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Early-type galaxies in the Antlia cluster: Catalogue and isophotal analysis
title Early-type galaxies in the Antlia cluster: Catalogue and isophotal analysis
spellingShingle Early-type galaxies in the Antlia cluster: Catalogue and isophotal analysis
Calderón, Juan Pablo
Ciencias Astronómicas
Galaxies: clusters: general
Galaxies: clusters: individual: Antlia
Galaxies: dwarf
Galaxies: elliptical and lenticular, cD
Galaxies: fundamental parameters
title_short Early-type galaxies in the Antlia cluster: Catalogue and isophotal analysis
title_full Early-type galaxies in the Antlia cluster: Catalogue and isophotal analysis
title_fullStr Early-type galaxies in the Antlia cluster: Catalogue and isophotal analysis
title_full_unstemmed Early-type galaxies in the Antlia cluster: Catalogue and isophotal analysis
title_sort Early-type galaxies in the Antlia cluster: Catalogue and isophotal analysis
dc.creator.none.fl_str_mv Calderón, Juan Pablo
Bassino, Lilia Patricia
Cellone, Sergio Aldo
Gómez, Matías
author Calderón, Juan Pablo
author_facet Calderón, Juan Pablo
Bassino, Lilia Patricia
Cellone, Sergio Aldo
Gómez, Matías
author_role author
author2 Bassino, Lilia Patricia
Cellone, Sergio Aldo
Gómez, Matías
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Galaxies: clusters: general
Galaxies: clusters: individual: Antlia
Galaxies: dwarf
Galaxies: elliptical and lenticular, cD
Galaxies: fundamental parameters
topic Ciencias Astronómicas
Galaxies: clusters: general
Galaxies: clusters: individual: Antlia
Galaxies: dwarf
Galaxies: elliptical and lenticular, cD
Galaxies: fundamental parameters
dc.description.none.fl_txt_mv We present a statistical isophotal analysis of 138 early-type galaxies in the Antlia cluster, located at a distance of ∼ 35 Mpc. The observational material consists of CCD images of four 36 x 36 arcmin² fields obtained with the MOSAIC II camera at the Blanco 4-m telescope at Cerro Tololo Interamerican Observatory. Our present work supersedes previous Antlia studies in the sense that the covered area is four times larger, the limiting magnitude is MB ∼ −9.6 mag, and the surface photometry parameters of each galaxy are derived from Sersic model fits extrapolated to infinity. In a companion previous study we focused on the ´ scaling relations obtained by means of surface photometry, and now we present the data, on which the previous paper is based, the parameters of the isophotal fits as well as an isophotal analysis. For each galaxy, we derive isophotal shape parameters along the semimajor axis and search for correlations within different radial bins. Through extensive statistical tests, we also analyse the behaviour of these values against photometric and global parameters of the galaxies themselves. While some galaxies do display radial gradients in their ellipticity (⋲) and/or their Fourier coefficients, differences in mean values between adjacent regions are not statistically significant. Regarding Fourier coefficients, dwarf galaxies usually display gradients between all adjacent regions, while non-dwarfs tend to show this behaviour just between the two outermost regions. Globally, there is no obvious correlation between Fourier coefficients and luminosity for the whole magnitude range (−12≳ MV≳ -22); however, dwarfs display much higher dispersions at all radii.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
description We present a statistical isophotal analysis of 138 early-type galaxies in the Antlia cluster, located at a distance of ∼ 35 Mpc. The observational material consists of CCD images of four 36 x 36 arcmin² fields obtained with the MOSAIC II camera at the Blanco 4-m telescope at Cerro Tololo Interamerican Observatory. Our present work supersedes previous Antlia studies in the sense that the covered area is four times larger, the limiting magnitude is MB ∼ −9.6 mag, and the surface photometry parameters of each galaxy are derived from Sersic model fits extrapolated to infinity. In a companion previous study we focused on the ´ scaling relations obtained by means of surface photometry, and now we present the data, on which the previous paper is based, the parameters of the isophotal fits as well as an isophotal analysis. For each galaxy, we derive isophotal shape parameters along the semimajor axis and search for correlations within different radial bins. Through extensive statistical tests, we also analyse the behaviour of these values against photometric and global parameters of the galaxies themselves. While some galaxies do display radial gradients in their ellipticity (⋲) and/or their Fourier coefficients, differences in mean values between adjacent regions are not statistically significant. Regarding Fourier coefficients, dwarf galaxies usually display gradients between all adjacent regions, while non-dwarfs tend to show this behaviour just between the two outermost regions. Globally, there is no obvious correlation between Fourier coefficients and luminosity for the whole magnitude range (−12≳ MV≳ -22); however, dwarfs display much higher dispersions at all radii.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/123905
url http://sedici.unlp.edu.ar/handle/10915/123905
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0035-8711
info:eu-repo/semantics/altIdentifier/issn/1365-2966
info:eu-repo/semantics/altIdentifier/arxiv/1803.03678v1
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty611
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
1760-1771
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 12.993085

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