Multicolour-metallicity relations from globular clusters in NGC 4486 (M87)
- Autores
- Forte, Juan Carlos; Faifer, Favio Raúl; Vega, Ema Irene; Bassino, Lilia Patricia; Smith Castelli, Analía Viviana; Cellone, Sergio Aldo; Geisler, Douglas
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present Gemini griz' photometry for 521 globular cluster (GC) candidates in a 5.5 × 5.5 arcmin2 field centred 3.8 arcmin to the south and 0.9arcmin to the west of the centre of the giant elliptical galaxy NGC 4486. All these objects have previously published (C - T1) photometry. We also present new (C - T1) photometry for 338 globulars, within 1.7 arcmin in galactocentric radius, which have (g - z) colours in the photometric system adopted by the Virgo Cluster Survey of the Advanced Camera for Surveys of the Hubble Space Telescope (HST). These photometric data are used to define a self-consistent multicolour grid (avoiding polynomial fits) and preliminarily calibrated in terms of two chemical abundance scales. The resulting multicolour colour-chemical abundance relations are used to test GC chemical abundance distributions. This is accomplished by modelling the 10 GC colour histograms that can be defined in terms of the Cgriz' bands. Our results suggest that the best fit to the GC observed colour histograms is consistent with a genuinely bimodal chemical abundance distribution NGC(Z). On the other side, each ('blue' and 'red') GC subpopulation follows a distinct colour-colour relation.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata - Materia
-
Ciencias Astronómicas
Galaxies:Haloes
Galaxies:Star clusters:General - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/85479
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Multicolour-metallicity relations from globular clusters in NGC 4486 (M87)Forte, Juan CarlosFaifer, Favio RaúlVega, Ema IreneBassino, Lilia PatriciaSmith Castelli, Analía VivianaCellone, Sergio AldoGeisler, DouglasCiencias AstronómicasGalaxies:HaloesGalaxies:Star clusters:GeneralWe present Gemini griz' photometry for 521 globular cluster (GC) candidates in a 5.5 × 5.5 arcmin<sup>2</sup> field centred 3.8 arcmin to the south and 0.9arcmin to the west of the centre of the giant elliptical galaxy NGC 4486. All these objects have previously published (C - T<sub>1</sub>) photometry. We also present new (C - T<sub>1</sub>) photometry for 338 globulars, within 1.7 arcmin in galactocentric radius, which have (g - z) colours in the photometric system adopted by the Virgo Cluster Survey of the Advanced Camera for Surveys of the Hubble Space Telescope (HST). These photometric data are used to define a self-consistent multicolour grid (avoiding polynomial fits) and preliminarily calibrated in terms of two chemical abundance scales. The resulting multicolour colour-chemical abundance relations are used to test GC chemical abundance distributions. This is accomplished by modelling the 10 GC colour histograms that can be defined in terms of the Cgriz' bands. Our results suggest that the best fit to the GC observed colour histograms is consistent with a genuinely bimodal chemical abundance distribution N<sub>GC</sub>(Z). On the other side, each ('blue' and 'red') GC subpopulation follows a distinct colour-colour relation.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1405-1416http://sedici.unlp.edu.ar/handle/10915/85479enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stt263info: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:UNLP2025-09-29T11:16:30Zoai:sedici.unlp.edu.ar:10915/85479Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:31.038SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Multicolour-metallicity relations from globular clusters in NGC 4486 (M87) |
title |
Multicolour-metallicity relations from globular clusters in NGC 4486 (M87) |
spellingShingle |
Multicolour-metallicity relations from globular clusters in NGC 4486 (M87) Forte, Juan Carlos Ciencias Astronómicas Galaxies:Haloes Galaxies:Star clusters:General |
title_short |
Multicolour-metallicity relations from globular clusters in NGC 4486 (M87) |
title_full |
Multicolour-metallicity relations from globular clusters in NGC 4486 (M87) |
title_fullStr |
Multicolour-metallicity relations from globular clusters in NGC 4486 (M87) |
title_full_unstemmed |
Multicolour-metallicity relations from globular clusters in NGC 4486 (M87) |
title_sort |
Multicolour-metallicity relations from globular clusters in NGC 4486 (M87) |
dc.creator.none.fl_str_mv |
Forte, Juan Carlos Faifer, Favio Raúl Vega, Ema Irene Bassino, Lilia Patricia Smith Castelli, Analía Viviana Cellone, Sergio Aldo Geisler, Douglas |
author |
Forte, Juan Carlos |
author_facet |
Forte, Juan Carlos Faifer, Favio Raúl Vega, Ema Irene Bassino, Lilia Patricia Smith Castelli, Analía Viviana Cellone, Sergio Aldo Geisler, Douglas |
author_role |
author |
author2 |
Faifer, Favio Raúl Vega, Ema Irene Bassino, Lilia Patricia Smith Castelli, Analía Viviana Cellone, Sergio Aldo Geisler, Douglas |
author2_role |
author author author author author author |
dc.subject.none.fl_str_mv |
Ciencias Astronómicas Galaxies:Haloes Galaxies:Star clusters:General |
topic |
Ciencias Astronómicas Galaxies:Haloes Galaxies:Star clusters:General |
dc.description.none.fl_txt_mv |
We present Gemini griz' photometry for 521 globular cluster (GC) candidates in a 5.5 × 5.5 arcmin<sup>2</sup> field centred 3.8 arcmin to the south and 0.9arcmin to the west of the centre of the giant elliptical galaxy NGC 4486. All these objects have previously published (C - T<sub>1</sub>) photometry. We also present new (C - T<sub>1</sub>) photometry for 338 globulars, within 1.7 arcmin in galactocentric radius, which have (g - z) colours in the photometric system adopted by the Virgo Cluster Survey of the Advanced Camera for Surveys of the Hubble Space Telescope (HST). These photometric data are used to define a self-consistent multicolour grid (avoiding polynomial fits) and preliminarily calibrated in terms of two chemical abundance scales. The resulting multicolour colour-chemical abundance relations are used to test GC chemical abundance distributions. This is accomplished by modelling the 10 GC colour histograms that can be defined in terms of the Cgriz' bands. Our results suggest that the best fit to the GC observed colour histograms is consistent with a genuinely bimodal chemical abundance distribution N<sub>GC</sub>(Z). On the other side, each ('blue' and 'red') GC subpopulation follows a distinct colour-colour relation. Facultad de Ciencias Astronómicas y Geofísicas Instituto de Astrofísica de La Plata |
description |
We present Gemini griz' photometry for 521 globular cluster (GC) candidates in a 5.5 × 5.5 arcmin<sup>2</sup> field centred 3.8 arcmin to the south and 0.9arcmin to the west of the centre of the giant elliptical galaxy NGC 4486. All these objects have previously published (C - T<sub>1</sub>) photometry. We also present new (C - T<sub>1</sub>) photometry for 338 globulars, within 1.7 arcmin in galactocentric radius, which have (g - z) colours in the photometric system adopted by the Virgo Cluster Survey of the Advanced Camera for Surveys of the Hubble Space Telescope (HST). These photometric data are used to define a self-consistent multicolour grid (avoiding polynomial fits) and preliminarily calibrated in terms of two chemical abundance scales. The resulting multicolour colour-chemical abundance relations are used to test GC chemical abundance distributions. This is accomplished by modelling the 10 GC colour histograms that can be defined in terms of the Cgriz' bands. Our results suggest that the best fit to the GC observed colour histograms is consistent with a genuinely bimodal chemical abundance distribution N<sub>GC</sub>(Z). On the other side, each ('blue' and 'red') GC subpopulation follows a distinct colour-colour relation. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013 |
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/10915/85479 |
url |
http://sedici.unlp.edu.ar/handle/10915/85479 |
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/doi/10.1093/mnras/stt263 |
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 1405-1416 |
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reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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