Extended UV (XUV) Emission in Nearby Galaxy Disks

We summarize the main properties of the extended UV (XUV) emission found in roughly 30% of the nearby spiral galaxies observed by the GALEX satellite. Two different classes of XUV disks are identified, the Type 1 XUV disks where significant, structured UV-bright features are found beyond the classic...

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Detalles Bibliográficos
Autores: Gil De Paz, Armando, Díaz Lopez, Cristina, Zamorano Calvo, Jaime, Gallego Maestro, Jesús, Muñoz Mateos, Juan Carlos, Pérez González, Pablo Guillermo
Tipo de recurso: capítulo de libro
Fecha de publicación:2008
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/53473
Acceso en línea:https://hdl.handle.net/20.500.14352/53473
Access Level:acceso abierto
Palabra clave:52
Spiral galaxies
Star-formation
Ultraviolet disk
Evolution
Spectroscopy
Abundances
NGC-4625
M83
Astrofísica
Astronomía (Física)
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spelling Extended UV (XUV) Emission in Nearby Galaxy DisksGil De Paz, ArmandoDíaz Lopez, CristinaZamorano Calvo, JaimeGallego Maestro, JesúsMuñoz Mateos, Juan CarlosPérez González, Pablo Guillermo52Spiral galaxiesStar-formationUltraviolet diskEvolutionSpectroscopyAbundancesNGC-4625M83AstrofísicaAstronomía (Física)We summarize the main properties of the extended UV (XUV) emission found in roughly 30% of the nearby spiral galaxies observed by the GALEX satellite. Two different classes of XUV disks are identified, the Type 1 XUV disks where significant, structured UV-bright features are found beyond the classical azimuthally-averaged star-formation threshold, and the Type 2 XUV disks, which are characterized by very extended (seven times the area where most of the stellar mass is found), blue ((FUV-K)<5 mag) outer disks. These latter disks are extreme examples of galaxies growing inside-out. The few XUV disks studied in detail to date are rich in H I but relatively poor in molecular gas, have stellar populations with luminosity-weighted ages of ∼1 Gyr, and ionized-gas metal abundances of ∼Z_⊙/10. As part of the CAHA-XUV project we are in the process of obtaining deep multi-wavelength imaging and spectroscopy of 65 XUV-disk galaxies so to determine whether or not these properties are common among XUV disks.Astronomical Society of the PacificFunes, José G.Corsini, Enrico MariaUniversidad Complutense de Madrid20082008-01-0120082008-01-01book parthttp://purl.org/coar/resource_type/c_3248info:eu-repo/semantics/bookPartapplication/pdfhttps://hdl.handle.net/20.500.14352/53473reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/534732026-06-02T12:44:21Z
dc.title.none.fl_str_mv Extended UV (XUV) Emission in Nearby Galaxy Disks
title Extended UV (XUV) Emission in Nearby Galaxy Disks
spellingShingle Extended UV (XUV) Emission in Nearby Galaxy Disks
Gil De Paz, Armando
52
Spiral galaxies
Star-formation
Ultraviolet disk
Evolution
Spectroscopy
Abundances
NGC-4625
M83
Astrofísica
Astronomía (Física)
title_short Extended UV (XUV) Emission in Nearby Galaxy Disks
title_full Extended UV (XUV) Emission in Nearby Galaxy Disks
title_fullStr Extended UV (XUV) Emission in Nearby Galaxy Disks
title_full_unstemmed Extended UV (XUV) Emission in Nearby Galaxy Disks
title_sort Extended UV (XUV) Emission in Nearby Galaxy Disks
dc.creator.none.fl_str_mv Gil De Paz, Armando
Díaz Lopez, Cristina
Zamorano Calvo, Jaime
Gallego Maestro, Jesús
Muñoz Mateos, Juan Carlos
Pérez González, Pablo Guillermo
author Gil De Paz, Armando
author_facet Gil De Paz, Armando
Díaz Lopez, Cristina
Zamorano Calvo, Jaime
Gallego Maestro, Jesús
Muñoz Mateos, Juan Carlos
Pérez González, Pablo Guillermo
author_role author
author2 Díaz Lopez, Cristina
Zamorano Calvo, Jaime
Gallego Maestro, Jesús
Muñoz Mateos, Juan Carlos
Pérez González, Pablo Guillermo
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Funes, José G.
Corsini, Enrico Maria
Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 52
Spiral galaxies
Star-formation
Ultraviolet disk
Evolution
Spectroscopy
Abundances
NGC-4625
M83
Astrofísica
Astronomía (Física)
topic 52
Spiral galaxies
Star-formation
Ultraviolet disk
Evolution
Spectroscopy
Abundances
NGC-4625
M83
Astrofísica
Astronomía (Física)
description We summarize the main properties of the extended UV (XUV) emission found in roughly 30% of the nearby spiral galaxies observed by the GALEX satellite. Two different classes of XUV disks are identified, the Type 1 XUV disks where significant, structured UV-bright features are found beyond the classical azimuthally-averaged star-formation threshold, and the Type 2 XUV disks, which are characterized by very extended (seven times the area where most of the stellar mass is found), blue ((FUV-K)<5 mag) outer disks. These latter disks are extreme examples of galaxies growing inside-out. The few XUV disks studied in detail to date are rich in H I but relatively poor in molecular gas, have stellar populations with luminosity-weighted ages of ∼1 Gyr, and ionized-gas metal abundances of ∼Z_⊙/10. As part of the CAHA-XUV project we are in the process of obtaining deep multi-wavelength imaging and spectroscopy of 65 XUV-disk galaxies so to determine whether or not these properties are common among XUV disks.
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-01-01
2008
2008-01-01
dc.type.none.fl_str_mv book part
http://purl.org/coar/resource_type/c_3248
dc.type.openaire.fl_str_mv info:eu-repo/semantics/bookPart
format bookPart
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/53473
url https://hdl.handle.net/20.500.14352/53473
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Astronomical Society of the Pacific
publisher.none.fl_str_mv Astronomical Society of the Pacific
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.228081

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