Integral field spectroscopy of HII regions in M33

Autores
López Hernández, Jesús; Terlevich, Elena; Terlevich, Roberto; Rosa González, Daniel; Díaz, Ángeles; García Benito, Rubén; Vílchez, José; Hägele, Guillermo Federico
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Integral field spectroscopy is presented for star-forming regions in M33. A central area of 300 × 500 pc2 and the external H II region IC 132, at a galactocentric distance ∼19 arcmin (4.69 kpc), were observed with the Potsdam Multi-Aperture Spectrophotometer instrument at the 3.5-m telescope of the Centro Astronómico Hispano–Alemán (CAHA, aka Calar Alto Observatory). The spectral coverage goes from 3600 Å to 1 μm to include from [O II] λ3727 Å to the near-infrared lines required for deriving sulphur electron temperature and abundance diagnostics. Local conditions within individual H II regions are presented in the form of emission-line fluxes and physical conditions for each spatial resolution element (spaxel) and for segments with similar Hα surface brightness. A clear dichotomy is observed when comparing the central to outer disc H II regions. While the external H II region has higher electron temperature plus larger Hβ equivalent width, size and excitation, the central region has higher extinction and metal content. The dichotomy extends to the Baldwin–Phillips–Terlevich (BPT) diagnostic diagrams that show two orthogonal broad distributions of points. By comparing with pseudo-3D photoionization models, we conclude that the bulk of observed differences are probably related to a different ionization parameter and metallicity. Wolf–Rayet (WR) features are detected in IC 132, and resolved into two concentrations whose integrated spectra were used to estimate the characteristic number of WR stars. No WR features were detected in the central H II regions despite their higher metallicity.
Fil: López Hernández, Jesús . Instituto Nacional de Astrofísica Óptica y Electrónica; México
Fil: Terlevich, Elena. Instituto Nacional de Astrofísica Óptica y Electrónica; México
Fil: Terlevich, Roberto . Instituto Nacional de Astrofísica Óptica y Electrónica; México
Fil: Rosa González, Daniel. Instituto Nacional de Astrofísica Óptica y Electrónica; México
Fil: Díaz, Ángeles . Universidad Autónoma de Madrid; España
Fil: García Benito, Rubén . Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; España
Fil: Vílchez, José. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; España
Fil: Hägele, Guillermo Federico. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Materia
Abundances
HII regions
M33 (galaxia)
Interstellar medium
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:11336/10333
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/10333
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Integral field spectroscopy of HII regions in M33López Hernández, Jesús Terlevich, ElenaTerlevich, Roberto Rosa González, DanielDíaz, Ángeles García Benito, Rubén Vílchez, JoséHägele, Guillermo FedericoAbundancesHII regionsM33 (galaxia)Interstellar mediumhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Integral field spectroscopy is presented for star-forming regions in M33. A central area of 300 × 500 pc2 and the external H II region IC 132, at a galactocentric distance ∼19 arcmin (4.69 kpc), were observed with the Potsdam Multi-Aperture Spectrophotometer instrument at the 3.5-m telescope of the Centro Astronómico Hispano–Alemán (CAHA, aka Calar Alto Observatory). The spectral coverage goes from 3600 Å to 1 μm to include from [O II] λ3727 Å to the near-infrared lines required for deriving sulphur electron temperature and abundance diagnostics. Local conditions within individual H II regions are presented in the form of emission-line fluxes and physical conditions for each spatial resolution element (spaxel) and for segments with similar Hα surface brightness. A clear dichotomy is observed when comparing the central to outer disc H II regions. While the external H II region has higher electron temperature plus larger Hβ equivalent width, size and excitation, the central region has higher extinction and metal content. The dichotomy extends to the Baldwin–Phillips–Terlevich (BPT) diagnostic diagrams that show two orthogonal broad distributions of points. By comparing with pseudo-3D photoionization models, we conclude that the bulk of observed differences are probably related to a different ionization parameter and metallicity. Wolf–Rayet (WR) features are detected in IC 132, and resolved into two concentrations whose integrated spectra were used to estimate the characteristic number of WR stars. No WR features were detected in the central H II regions despite their higher metallicity.Fil: López Hernández, Jesús . Instituto Nacional de Astrofísica Óptica y Electrónica; MéxicoFil: Terlevich, Elena. Instituto Nacional de Astrofísica Óptica y Electrónica; MéxicoFil: Terlevich, Roberto . Instituto Nacional de Astrofísica Óptica y Electrónica; MéxicoFil: Rosa González, Daniel. Instituto Nacional de Astrofísica Óptica y Electrónica; MéxicoFil: Díaz, Ángeles . Universidad Autónoma de Madrid; EspañaFil: García Benito, Rubén . Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; EspañaFil: Vílchez, José. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; EspañaFil: Hägele, Guillermo Federico. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; ArgentinaWiley2013-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10333López Hernández, Jesús ; Terlevich, Elena; Terlevich, Roberto ; Rosa González, Daniel; Díaz, Ángeles ; et al.; Integral field spectroscopy of HII regions in M33; Wiley; Monthly Notices Of The Royal Astronomical Society; 430; 1-2013; 472-5080035-8711enginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sts658info:eu-repo/semantics/altIdentifier/url/https://mnras.oxfordjournals.org/content/430/1/472info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:30:19Zoai:ri.conicet.gov.ar:11336/10333instacron: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:34982025-10-15 14:30:20.112CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Integral field spectroscopy of HII regions in M33
title Integral field spectroscopy of HII regions in M33
spellingShingle Integral field spectroscopy of HII regions in M33
López Hernández, Jesús
Abundances
HII regions
M33 (galaxia)
Interstellar medium
title_short Integral field spectroscopy of HII regions in M33
title_full Integral field spectroscopy of HII regions in M33
title_fullStr Integral field spectroscopy of HII regions in M33
title_full_unstemmed Integral field spectroscopy of HII regions in M33
title_sort Integral field spectroscopy of HII regions in M33
dc.creator.none.fl_str_mv López Hernández, Jesús
Terlevich, Elena
Terlevich, Roberto
Rosa González, Daniel
Díaz, Ángeles
García Benito, Rubén
Vílchez, José
Hägele, Guillermo Federico
author López Hernández, Jesús
author_facet López Hernández, Jesús
Terlevich, Elena
Terlevich, Roberto
Rosa González, Daniel
Díaz, Ángeles
García Benito, Rubén
Vílchez, José
Hägele, Guillermo Federico
author_role author
author2 Terlevich, Elena
Terlevich, Roberto
Rosa González, Daniel
Díaz, Ángeles
García Benito, Rubén
Vílchez, José
Hägele, Guillermo Federico
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Abundances
HII regions
M33 (galaxia)
Interstellar medium
topic Abundances
HII regions
M33 (galaxia)
Interstellar medium
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Integral field spectroscopy is presented for star-forming regions in M33. A central area of 300 × 500 pc2 and the external H II region IC 132, at a galactocentric distance ∼19 arcmin (4.69 kpc), were observed with the Potsdam Multi-Aperture Spectrophotometer instrument at the 3.5-m telescope of the Centro Astronómico Hispano–Alemán (CAHA, aka Calar Alto Observatory). The spectral coverage goes from 3600 Å to 1 μm to include from [O II] λ3727 Å to the near-infrared lines required for deriving sulphur electron temperature and abundance diagnostics. Local conditions within individual H II regions are presented in the form of emission-line fluxes and physical conditions for each spatial resolution element (spaxel) and for segments with similar Hα surface brightness. A clear dichotomy is observed when comparing the central to outer disc H II regions. While the external H II region has higher electron temperature plus larger Hβ equivalent width, size and excitation, the central region has higher extinction and metal content. The dichotomy extends to the Baldwin–Phillips–Terlevich (BPT) diagnostic diagrams that show two orthogonal broad distributions of points. By comparing with pseudo-3D photoionization models, we conclude that the bulk of observed differences are probably related to a different ionization parameter and metallicity. Wolf–Rayet (WR) features are detected in IC 132, and resolved into two concentrations whose integrated spectra were used to estimate the characteristic number of WR stars. No WR features were detected in the central H II regions despite their higher metallicity.
Fil: López Hernández, Jesús . Instituto Nacional de Astrofísica Óptica y Electrónica; México
Fil: Terlevich, Elena. Instituto Nacional de Astrofísica Óptica y Electrónica; México
Fil: Terlevich, Roberto . Instituto Nacional de Astrofísica Óptica y Electrónica; México
Fil: Rosa González, Daniel. Instituto Nacional de Astrofísica Óptica y Electrónica; México
Fil: Díaz, Ángeles . Universidad Autónoma de Madrid; España
Fil: García Benito, Rubén . Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; España
Fil: Vílchez, José. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; España
Fil: Hägele, Guillermo Federico. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
description Integral field spectroscopy is presented for star-forming regions in M33. A central area of 300 × 500 pc2 and the external H II region IC 132, at a galactocentric distance ∼19 arcmin (4.69 kpc), were observed with the Potsdam Multi-Aperture Spectrophotometer instrument at the 3.5-m telescope of the Centro Astronómico Hispano–Alemán (CAHA, aka Calar Alto Observatory). The spectral coverage goes from 3600 Å to 1 μm to include from [O II] λ3727 Å to the near-infrared lines required for deriving sulphur electron temperature and abundance diagnostics. Local conditions within individual H II regions are presented in the form of emission-line fluxes and physical conditions for each spatial resolution element (spaxel) and for segments with similar Hα surface brightness. A clear dichotomy is observed when comparing the central to outer disc H II regions. While the external H II region has higher electron temperature plus larger Hβ equivalent width, size and excitation, the central region has higher extinction and metal content. The dichotomy extends to the Baldwin–Phillips–Terlevich (BPT) diagnostic diagrams that show two orthogonal broad distributions of points. By comparing with pseudo-3D photoionization models, we conclude that the bulk of observed differences are probably related to a different ionization parameter and metallicity. Wolf–Rayet (WR) features are detected in IC 132, and resolved into two concentrations whose integrated spectra were used to estimate the characteristic number of WR stars. No WR features were detected in the central H II regions despite their higher metallicity.
publishDate 2013
dc.date.none.fl_str_mv 2013-01
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/11336/10333
López Hernández, Jesús ; Terlevich, Elena; Terlevich, Roberto ; Rosa González, Daniel; Díaz, Ángeles ; et al.; Integral field spectroscopy of HII regions in M33; Wiley; Monthly Notices Of The Royal Astronomical Society; 430; 1-2013; 472-508
0035-8711
url http://hdl.handle.net/11336/10333
identifier_str_mv López Hernández, Jesús ; Terlevich, Elena; Terlevich, Roberto ; Rosa González, Daniel; Díaz, Ángeles ; et al.; Integral field spectroscopy of HII regions in M33; Wiley; Monthly Notices Of The Royal Astronomical Society; 430; 1-2013; 472-508
0035-8711
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sts658
info:eu-repo/semantics/altIdentifier/url/https://mnras.oxfordjournals.org/content/430/1/472
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 Wiley
publisher.none.fl_str_mv Wiley
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 13.22299

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