Deconstructing the Antlia cluster core
- Autores
- Caso, Juan Pablo; Richtler, T.
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Context. The present literature does not give a satisfactory answer to the question about the nature of the "Antlia galaxy cluster". Aims. The radial velocities of galaxies found in the region around the giant ellipticals NGC 3258/3268 range from about 1000 km s-1 to 4000 km s-1. We characterise this region and its possible kinematical and population substructure. Methods. We have obtained VLT-VIMOS multi-object spectra of the galaxy population in the inner part of the Antlia cluster and measure radial velocities for 45 potential members. We supplement our galaxy sample with literature data, ending up with 105 galaxy velocities. Results. We find a large radial velocity dispersion for the entire sample as reported in previous papers. However, we find three groups at about 1900 km s-1, 2800 km s-1, and 3700 km s-1, which we interpret as differences in the recession velocities rather than peculiar velocities. Conclusions. The high radial velocity dispersion of galaxies in the Antlia region reflects a considerable extension along the line of sight.
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Ciencias Astronómicas
Galaxies: clusters: individual: Antlia cluster
Galaxies: distances and redshifts - 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:10915/87277
Ver los metadatos del registro completo
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Deconstructing the Antlia cluster coreCaso, Juan PabloRichtler, T.Ciencias AstronómicasGalaxies: clusters: individual: Antlia clusterGalaxies: distances and redshiftsContext. The present literature does not give a satisfactory answer to the question about the nature of the "Antlia galaxy cluster". Aims. The radial velocities of galaxies found in the region around the giant ellipticals NGC 3258/3268 range from about 1000 km s-1 to 4000 km s-1. We characterise this region and its possible kinematical and population substructure. Methods. We have obtained VLT-VIMOS multi-object spectra of the galaxy population in the inner part of the Antlia cluster and measure radial velocities for 45 potential members. We supplement our galaxy sample with literature data, ending up with 105 galaxy velocities. Results. We find a large radial velocity dispersion for the entire sample as reported in previous papers. However, we find three groups at about 1900 km s-1, 2800 km s-1, and 3700 km s-1, which we interpret as differences in the recession velocities rather than peculiar velocities. Conclusions. The high radial velocity dispersion of galaxies in the Antlia region reflects a considerable extension along the line of sight.Facultad de Ciencias Astronómicas y Geofísicas2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/87277enginfo:eu-repo/semantics/altIdentifier/issn/0004-6361info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201527136info: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:UNLP2025-09-29T11:16:54Zoai:sedici.unlp.edu.ar:10915/87277Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:54.404SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Deconstructing the Antlia cluster core |
title |
Deconstructing the Antlia cluster core |
spellingShingle |
Deconstructing the Antlia cluster core Caso, Juan Pablo Ciencias Astronómicas Galaxies: clusters: individual: Antlia cluster Galaxies: distances and redshifts |
title_short |
Deconstructing the Antlia cluster core |
title_full |
Deconstructing the Antlia cluster core |
title_fullStr |
Deconstructing the Antlia cluster core |
title_full_unstemmed |
Deconstructing the Antlia cluster core |
title_sort |
Deconstructing the Antlia cluster core |
dc.creator.none.fl_str_mv |
Caso, Juan Pablo Richtler, T. |
author |
Caso, Juan Pablo |
author_facet |
Caso, Juan Pablo Richtler, T. |
author_role |
author |
author2 |
Richtler, T. |
author2_role |
author |
dc.subject.none.fl_str_mv |
Ciencias Astronómicas Galaxies: clusters: individual: Antlia cluster Galaxies: distances and redshifts |
topic |
Ciencias Astronómicas Galaxies: clusters: individual: Antlia cluster Galaxies: distances and redshifts |
dc.description.none.fl_txt_mv |
Context. The present literature does not give a satisfactory answer to the question about the nature of the "Antlia galaxy cluster". Aims. The radial velocities of galaxies found in the region around the giant ellipticals NGC 3258/3268 range from about 1000 km s-1 to 4000 km s-1. We characterise this region and its possible kinematical and population substructure. Methods. We have obtained VLT-VIMOS multi-object spectra of the galaxy population in the inner part of the Antlia cluster and measure radial velocities for 45 potential members. We supplement our galaxy sample with literature data, ending up with 105 galaxy velocities. Results. We find a large radial velocity dispersion for the entire sample as reported in previous papers. However, we find three groups at about 1900 km s-1, 2800 km s-1, and 3700 km s-1, which we interpret as differences in the recession velocities rather than peculiar velocities. Conclusions. The high radial velocity dispersion of galaxies in the Antlia region reflects a considerable extension along the line of sight. Facultad de Ciencias Astronómicas y Geofísicas |
description |
Context. The present literature does not give a satisfactory answer to the question about the nature of the "Antlia galaxy cluster". Aims. The radial velocities of galaxies found in the region around the giant ellipticals NGC 3258/3268 range from about 1000 km s-1 to 4000 km s-1. We characterise this region and its possible kinematical and population substructure. Methods. We have obtained VLT-VIMOS multi-object spectra of the galaxy population in the inner part of the Antlia cluster and measure radial velocities for 45 potential members. We supplement our galaxy sample with literature data, ending up with 105 galaxy velocities. Results. We find a large radial velocity dispersion for the entire sample as reported in previous papers. However, we find three groups at about 1900 km s-1, 2800 km s-1, and 3700 km s-1, which we interpret as differences in the recession velocities rather than peculiar velocities. Conclusions. The high radial velocity dispersion of galaxies in the Antlia region reflects a considerable extension along the line of sight. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015 |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/0004-6361 info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201527136 |
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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) |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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