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dc.contributor.author
López Hernández, Jesús
dc.contributor.author
Terlevich, Elena
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Terlevich, Roberto
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Rosa González, Daniel
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Díaz, Ángeles
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García Benito, Rubén
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Vílchez, José
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Hägele, Guillermo Federico
dc.date.available
2016-12-27T19:58:49Z
dc.date.issued
2013-01
dc.identifier.citation
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
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/10333
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Abundances
dc.subject
Hii Regions
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M33 (Galaxia)
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Interstellar Medium
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Integral field spectroscopy of HII regions in M33
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-12-14T12:55:20Z
dc.journal.volume
430
dc.journal.pagination
472-508
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: López Hernández, Jesús . Instituto Nacional de Astrofísica Óptica y Electrónica; México
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Fil: Terlevich, Elena. Instituto Nacional de Astrofísica Óptica y Electrónica; México
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Fil: Terlevich, Roberto . Instituto Nacional de Astrofísica Óptica y Electrónica; México
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Fil: Rosa González, Daniel. Instituto Nacional de Astrofísica Óptica y Electrónica; México
dc.description.fil
Fil: Díaz, Ángeles . Universidad Autónoma de Madrid; España
dc.description.fil
Fil: García Benito, Rubén . Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; España
dc.description.fil
Fil: Vílchez, José. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; España
dc.description.fil
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
dc.journal.title
Monthly Notices Of The Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/sts658
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://mnras.oxfordjournals.org/content/430/1/472
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