High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 : I. Internal kinematics

Autores
Firpo, Verónica; Bosch, Guillermo Luis; Hägele, Guillermo Federico; Díaz, Ángeles I.; Morrell, Nidia Irene
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Using echelle spectroscopy, obtained at Las Campanas Observatory, we present a detailed study of the internal kinematics of the nebular material in multiple knots of the blue compact dwarf galaxy Haro15. A detailed analysis of the complex emission-line profiles shows the presence of an underlying broad component in almost all knots, and the brightest star-forming region shows unmistakable signs for the presence of two distinct narrow kinematical components. We also study the information that our analysis provides regarding the motion of the individual knots in the Haro15 galaxy potential, confirming that they follow galactic rotation. Finally, we examine the relation between their velocity dispersion and luminosity, finding that almost all knots follow the relation for virialized systems. This holds for the strong narrow components identified in complex fits and for single profile fits, although the latter show a flatter slope. In agreement with previous findings, in this paper we show that the existence of multiple kinematical components among massive starbursts cannot be overlooked, as it has a noticeable effect on any subsequent analysis that relies on basic parameters.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
Galaxies: individual: Haro15
Galaxies: starburst
Hii regions
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/84479

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network_name_str SEDICI (UNLP)
spelling High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 : I. Internal kinematicsFirpo, VerónicaBosch, Guillermo LuisHägele, Guillermo FedericoDíaz, Ángeles I.Morrell, Nidia IreneCiencias AstronómicasGalaxies: individual: Haro15Galaxies: starburstHii regionsUsing echelle spectroscopy, obtained at Las Campanas Observatory, we present a detailed study of the internal kinematics of the nebular material in multiple knots of the blue compact dwarf galaxy Haro15. A detailed analysis of the complex emission-line profiles shows the presence of an underlying broad component in almost all knots, and the brightest star-forming region shows unmistakable signs for the presence of two distinct narrow kinematical components. We also study the information that our analysis provides regarding the motion of the individual knots in the Haro15 galaxy potential, confirming that they follow galactic rotation. Finally, we examine the relation between their velocity dispersion and luminosity, finding that almost all knots follow the relation for virialized systems. This holds for the strong narrow components identified in complex fits and for single profile fits, although the latter show a flatter slope. In agreement with previous findings, in this paper we show that the existence of multiple kinematical components among massive starbursts cannot be overlooked, as it has a noticeable effect on any subsequent analysis that relies on basic parameters.Facultad de Ciencias Astronómicas y Geofísicas2011-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf3288-3297http://sedici.unlp.edu.ar/handle/10915/84479enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2011.18630.xinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:10Zoai:sedici.unlp.edu.ar:10915/84479Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:10.478SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 : I. Internal kinematics
title High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 : I. Internal kinematics
spellingShingle High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 : I. Internal kinematics
Firpo, Verónica
Ciencias Astronómicas
Galaxies: individual: Haro15
Galaxies: starburst
Hii regions
title_short High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 : I. Internal kinematics
title_full High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 : I. Internal kinematics
title_fullStr High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 : I. Internal kinematics
title_full_unstemmed High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 : I. Internal kinematics
title_sort High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 : I. Internal kinematics
dc.creator.none.fl_str_mv Firpo, Verónica
Bosch, Guillermo Luis
Hägele, Guillermo Federico
Díaz, Ángeles I.
Morrell, Nidia Irene
author Firpo, Verónica
author_facet Firpo, Verónica
Bosch, Guillermo Luis
Hägele, Guillermo Federico
Díaz, Ángeles I.
Morrell, Nidia Irene
author_role author
author2 Bosch, Guillermo Luis
Hägele, Guillermo Federico
Díaz, Ángeles I.
Morrell, Nidia Irene
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Galaxies: individual: Haro15
Galaxies: starburst
Hii regions
topic Ciencias Astronómicas
Galaxies: individual: Haro15
Galaxies: starburst
Hii regions
dc.description.none.fl_txt_mv Using echelle spectroscopy, obtained at Las Campanas Observatory, we present a detailed study of the internal kinematics of the nebular material in multiple knots of the blue compact dwarf galaxy Haro15. A detailed analysis of the complex emission-line profiles shows the presence of an underlying broad component in almost all knots, and the brightest star-forming region shows unmistakable signs for the presence of two distinct narrow kinematical components. We also study the information that our analysis provides regarding the motion of the individual knots in the Haro15 galaxy potential, confirming that they follow galactic rotation. Finally, we examine the relation between their velocity dispersion and luminosity, finding that almost all knots follow the relation for virialized systems. This holds for the strong narrow components identified in complex fits and for single profile fits, although the latter show a flatter slope. In agreement with previous findings, in this paper we show that the existence of multiple kinematical components among massive starbursts cannot be overlooked, as it has a noticeable effect on any subsequent analysis that relies on basic parameters.
Facultad de Ciencias Astronómicas y Geofísicas
description Using echelle spectroscopy, obtained at Las Campanas Observatory, we present a detailed study of the internal kinematics of the nebular material in multiple knots of the blue compact dwarf galaxy Haro15. A detailed analysis of the complex emission-line profiles shows the presence of an underlying broad component in almost all knots, and the brightest star-forming region shows unmistakable signs for the presence of two distinct narrow kinematical components. We also study the information that our analysis provides regarding the motion of the individual knots in the Haro15 galaxy potential, confirming that they follow galactic rotation. Finally, we examine the relation between their velocity dispersion and luminosity, finding that almost all knots follow the relation for virialized systems. This holds for the strong narrow components identified in complex fits and for single profile fits, although the latter show a flatter slope. In agreement with previous findings, in this paper we show that the existence of multiple kinematical components among massive starbursts cannot be overlooked, as it has a noticeable effect on any subsequent analysis that relies on basic parameters.
publishDate 2011
dc.date.none.fl_str_mv 2011-07
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/10915/84479
url http://sedici.unlp.edu.ar/handle/10915/84479
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/10.1111/j.1365-2966.2011.18630.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
3288-3297
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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