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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/10333
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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 Técnicas2025-09-29T09:40:36Zoai: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:34982025-09-29 09:40:36.682CONICET 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 |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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