The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era
In: Advances in Astronomy, Jg. 2013 (2013)
Online
academicJournal
Zugriff:
A new generation of wide-field emission-line surveys based on integral field units (IFU) is allowing us to obtain spatially resolved information of the gas-phase emission in nearby late-type galaxies, based on large samples of HII regions and full two-dimensional coverage. These observations are allowing us to discover and characterise abundance differentials between galactic substructures and new scaling relations with global physical properties. Here I review some highlights of our current studies employing this technique: (1) the case study of NGC 628, the largest galaxy ever sampled with an IFU; (2) a statistical approach to the abundance gradients of spiral galaxies, which indicates a universal radial gradient for oxygen abundance; and (3) the discovery of a new scaling relation of HII regions in spiral galaxies, the local mass-metallicity relation of star-forming galaxies. The observational properties and constrains found in local galaxies using this new technique will allow us to interpret the gas-phase abundance of analogue high-z systems.
| Titel: |
The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era
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| Autor/in / Beteiligte Person: | Fernando Fabián Rosales-Ortega |
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| Zeitschrift: | Advances in Astronomy, Jg. 2013 (2013) |
| Veröffentlichung: | Hindawi Limited, 2013 |
| Medientyp: | academicJournal |
| ISSN: | 1687-7969 (print) ; 1687-7977 (print) |
| DOI: | 10.1155/2013/627867 |
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