High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 – II. Chemodynamics

Autores
Hägele, Guillermo Federico; Firpo, Verónica; Bosch, Guillermo Luis; Díaz, Angeles I.; Morrell, Nidia Irene
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a detailed study of the physical properties of the nebular material in four starforming knots of the blue compact dwarf galaxy Haro 15. Using long-slit and echelle spectroscopy obtained at Las Campanas Observatory, we study the physical conditions (electron density and temperatures), ionic and total chemical abundances of several atoms, reddening and ionization structure, for the global flux and for the different kinematical components. The latter was derived by comparing the oxygen and sulphur ionic ratios to their corresponding observed emission-line ratios (the η and η 'plots) in different regions of the galaxy. Applying the direct method or empirical relationships for abundance determination, we perform a comparative analysis between these regions. The similarities found in the ionization structure of the different kinematical components imply that the effective temperatures of the ionizing radiation fields are very similar in spite of some small differences in the ionization state of the different elements. Therefore, the different gaseous kinematical components identified in each star-forming knot are probably ionized by the same star cluster. However, the difference in the ionizing structure of the two knots with knot A showing a lower effective temperature than knot B suggests a different evolutionary stage for them consistent with the presence of an older and more evolved stellar population in the first.
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
ISM: abundances
H II regions
Galaxies: abundances
Galaxies: fundamental parameters
Galaxies: individual: Haro 15
Galaxies: starburst
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/126095
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/126095
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 – II. ChemodynamicsHägele, Guillermo FedericoFirpo, VerónicaBosch, Guillermo LuisDíaz, Angeles I.Morrell, Nidia IreneCiencias AstronómicasISM: abundancesH II regionsGalaxies: abundancesGalaxies: fundamental parametersGalaxies: individual: Haro 15Galaxies: starburstWe present a detailed study of the physical properties of the nebular material in four starforming knots of the blue compact dwarf galaxy Haro 15. Using long-slit and echelle spectroscopy obtained at Las Campanas Observatory, we study the physical conditions (electron density and temperatures), ionic and total chemical abundances of several atoms, reddening and ionization structure, for the global flux and for the different kinematical components. The latter was derived by comparing the oxygen and sulphur ionic ratios to their corresponding observed emission-line ratios (the η and η 'plots) in different regions of the galaxy. Applying the direct method or empirical relationships for abundance determination, we perform a comparative analysis between these regions. The similarities found in the ionization structure of the different kinematical components imply that the effective temperatures of the ionizing radiation fields are very similar in spite of some small differences in the ionization state of the different elements. Therefore, the different gaseous kinematical components identified in each star-forming knot are probably ionized by the same star cluster. However, the difference in the ionizing structure of the two knots with knot A showing a lower effective temperature than knot B suggests a different evolutionary stage for them consistent with the presence of an older and more evolved stellar population in the first.Instituto de Astrofísica de La Plata2012-04-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf3475-3494http://sedici.unlp.edu.ar/handle/10915/126095enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/issn/1365-2966info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2012.20858.xinfo: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:UNLP2025-09-29T11:30:14Zoai:sedici.unlp.edu.ar:10915/126095Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:30:14.339SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 – II. Chemodynamics
title High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 – II. Chemodynamics
spellingShingle High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 – II. Chemodynamics
Hägele, Guillermo Federico
Ciencias Astronómicas
ISM: abundances
H II regions
Galaxies: abundances
Galaxies: fundamental parameters
Galaxies: individual: Haro 15
Galaxies: starburst
title_short High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 – II. Chemodynamics
title_full High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 – II. Chemodynamics
title_fullStr High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 – II. Chemodynamics
title_full_unstemmed High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 – II. Chemodynamics
title_sort High-resolution spectroscopy of the blue compact dwarf galaxy Haro 15 – II. Chemodynamics
dc.creator.none.fl_str_mv Hägele, Guillermo Federico
Firpo, Verónica
Bosch, Guillermo Luis
Díaz, Angeles I.
Morrell, Nidia Irene
author Hägele, Guillermo Federico
author_facet Hägele, Guillermo Federico
Firpo, Verónica
Bosch, Guillermo Luis
Díaz, Angeles I.
Morrell, Nidia Irene
author_role author
author2 Firpo, Verónica
Bosch, Guillermo Luis
Díaz, Angeles I.
Morrell, Nidia Irene
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
ISM: abundances
H II regions
Galaxies: abundances
Galaxies: fundamental parameters
Galaxies: individual: Haro 15
Galaxies: starburst
topic Ciencias Astronómicas
ISM: abundances
H II regions
Galaxies: abundances
Galaxies: fundamental parameters
Galaxies: individual: Haro 15
Galaxies: starburst
dc.description.none.fl_txt_mv We present a detailed study of the physical properties of the nebular material in four starforming knots of the blue compact dwarf galaxy Haro 15. Using long-slit and echelle spectroscopy obtained at Las Campanas Observatory, we study the physical conditions (electron density and temperatures), ionic and total chemical abundances of several atoms, reddening and ionization structure, for the global flux and for the different kinematical components. The latter was derived by comparing the oxygen and sulphur ionic ratios to their corresponding observed emission-line ratios (the η and η 'plots) in different regions of the galaxy. Applying the direct method or empirical relationships for abundance determination, we perform a comparative analysis between these regions. The similarities found in the ionization structure of the different kinematical components imply that the effective temperatures of the ionizing radiation fields are very similar in spite of some small differences in the ionization state of the different elements. Therefore, the different gaseous kinematical components identified in each star-forming knot are probably ionized by the same star cluster. However, the difference in the ionizing structure of the two knots with knot A showing a lower effective temperature than knot B suggests a different evolutionary stage for them consistent with the presence of an older and more evolved stellar population in the first.
Instituto de Astrofísica de La Plata
description We present a detailed study of the physical properties of the nebular material in four starforming knots of the blue compact dwarf galaxy Haro 15. Using long-slit and echelle spectroscopy obtained at Las Campanas Observatory, we study the physical conditions (electron density and temperatures), ionic and total chemical abundances of several atoms, reddening and ionization structure, for the global flux and for the different kinematical components. The latter was derived by comparing the oxygen and sulphur ionic ratios to their corresponding observed emission-line ratios (the η and η 'plots) in different regions of the galaxy. Applying the direct method or empirical relationships for abundance determination, we perform a comparative analysis between these regions. The similarities found in the ionization structure of the different kinematical components imply that the effective temperatures of the ionizing radiation fields are very similar in spite of some small differences in the ionization state of the different elements. Therefore, the different gaseous kinematical components identified in each star-forming knot are probably ionized by the same star cluster. However, the difference in the ionizing structure of the two knots with knot A showing a lower effective temperature than knot B suggests a different evolutionary stage for them consistent with the presence of an older and more evolved stellar population in the first.
publishDate 2012
dc.date.none.fl_str_mv 2012-04-10
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/10915/126095
url http://sedici.unlp.edu.ar/handle/10915/126095
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/issn/1365-2966
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2012.20858.x
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
3475-3494
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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score 13.070432

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