Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132

Autores
Madrid, Juan P.; Donzelli, Carlos Jose
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A spectroscopic follow-up of ultracompact dwarf (UCD) candidates in the fossil group NGC 1132 is undertaken with the Gemini Multi Object Spectrograph. These new Gemini spectra prove the presence of six UCDs in the fossil group NGC 1132 at a distance of D ∼ 100 Mpc and a recessional velocity of vr = 6935 ± 11 km s−1. The brightest and largest member of the UCD population is an M32 analog with a size of 77.1 pc and a magnitude of MV = −14.8 mag with the characteristics in between those of the brightest UCDs and compact elliptical galaxies. The ensemble of UCDs have an average radial velocity of vr = 6966 ± 208 km s−1 and a velocity dispersion of σv = 169 ± 18 km s−1 similar to the one of poor galaxy groups. This work shows that UCDs can be used as test particles to determine the dynamical properties of galaxy groups. The presence of UCDs in the fossil group environment is confirmed and thus the fact that UCDs can form across diverse evolutionary conditions.
Fil: Madrid, Juan P.. Swinburne University of Technology; Australia
Fil: Donzelli, Carlos Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomia Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomia Teórica y Experimental; Argentina
Materia
Galaxies
Elliptical
Dwarf
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:11336/25691
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132Madrid, Juan P.Donzelli, Carlos JoseGalaxiesEllipticalDwarfhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A spectroscopic follow-up of ultracompact dwarf (UCD) candidates in the fossil group NGC 1132 is undertaken with the Gemini Multi Object Spectrograph. These new Gemini spectra prove the presence of six UCDs in the fossil group NGC 1132 at a distance of D ∼ 100 Mpc and a recessional velocity of vr = 6935 ± 11 km s−1. The brightest and largest member of the UCD population is an M32 analog with a size of 77.1 pc and a magnitude of MV = −14.8 mag with the characteristics in between those of the brightest UCDs and compact elliptical galaxies. The ensemble of UCDs have an average radial velocity of vr = 6966 ± 208 km s−1 and a velocity dispersion of σv = 169 ± 18 km s−1 similar to the one of poor galaxy groups. This work shows that UCDs can be used as test particles to determine the dynamical properties of galaxy groups. The presence of UCDs in the fossil group environment is confirmed and thus the fact that UCDs can form across diverse evolutionary conditions.Fil: Madrid, Juan P.. Swinburne University of Technology; AustraliaFil: Donzelli, Carlos Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomia Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomia Teórica y Experimental; ArgentinaIOP Publishing2013-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/25691Madrid, Juan P.; Donzelli, Carlos Jose; Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132; IOP Publishing; Astrophysical Journal; 770; 2; 6-2013; 1-60004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/770/2/158info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/770/2/158/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:56:08Zoai:ri.conicet.gov.ar:11336/25691instacron: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:34982025-10-22 11:56:08.306CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132
title Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132
spellingShingle Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132
Madrid, Juan P.
Galaxies
Elliptical
Dwarf
title_short Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132
title_full Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132
title_fullStr Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132
title_full_unstemmed Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132
title_sort Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132
dc.creator.none.fl_str_mv Madrid, Juan P.
Donzelli, Carlos Jose
author Madrid, Juan P.
author_facet Madrid, Juan P.
Donzelli, Carlos Jose
author_role author
author2 Donzelli, Carlos Jose
author2_role author
dc.subject.none.fl_str_mv Galaxies
Elliptical
Dwarf
topic Galaxies
Elliptical
Dwarf
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A spectroscopic follow-up of ultracompact dwarf (UCD) candidates in the fossil group NGC 1132 is undertaken with the Gemini Multi Object Spectrograph. These new Gemini spectra prove the presence of six UCDs in the fossil group NGC 1132 at a distance of D ∼ 100 Mpc and a recessional velocity of vr = 6935 ± 11 km s−1. The brightest and largest member of the UCD population is an M32 analog with a size of 77.1 pc and a magnitude of MV = −14.8 mag with the characteristics in between those of the brightest UCDs and compact elliptical galaxies. The ensemble of UCDs have an average radial velocity of vr = 6966 ± 208 km s−1 and a velocity dispersion of σv = 169 ± 18 km s−1 similar to the one of poor galaxy groups. This work shows that UCDs can be used as test particles to determine the dynamical properties of galaxy groups. The presence of UCDs in the fossil group environment is confirmed and thus the fact that UCDs can form across diverse evolutionary conditions.
Fil: Madrid, Juan P.. Swinburne University of Technology; Australia
Fil: Donzelli, Carlos Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomia Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomia Teórica y Experimental; Argentina
description A spectroscopic follow-up of ultracompact dwarf (UCD) candidates in the fossil group NGC 1132 is undertaken with the Gemini Multi Object Spectrograph. These new Gemini spectra prove the presence of six UCDs in the fossil group NGC 1132 at a distance of D ∼ 100 Mpc and a recessional velocity of vr = 6935 ± 11 km s−1. The brightest and largest member of the UCD population is an M32 analog with a size of 77.1 pc and a magnitude of MV = −14.8 mag with the characteristics in between those of the brightest UCDs and compact elliptical galaxies. The ensemble of UCDs have an average radial velocity of vr = 6966 ± 208 km s−1 and a velocity dispersion of σv = 169 ± 18 km s−1 similar to the one of poor galaxy groups. This work shows that UCDs can be used as test particles to determine the dynamical properties of galaxy groups. The presence of UCDs in the fossil group environment is confirmed and thus the fact that UCDs can form across diverse evolutionary conditions.
publishDate 2013
dc.date.none.fl_str_mv 2013-06
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/11336/25691
Madrid, Juan P.; Donzelli, Carlos Jose; Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132; IOP Publishing; Astrophysical Journal; 770; 2; 6-2013; 1-6
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/25691
identifier_str_mv Madrid, Juan P.; Donzelli, Carlos Jose; Gemini spectroscopy of ultracompact dwarfs in the fossil group NGC 1132; IOP Publishing; Astrophysical Journal; 770; 2; 6-2013; 1-6
0004-637X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/770/2/158
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/770/2/158/meta
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
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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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score 12.982451

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