The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era
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 all...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Advances in Astronomy |
| Online Access: | http://dx.doi.org/10.1155/2013/627867 |
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| author | Fernando Fabián Rosales-Ortega |
| author_facet | Fernando Fabián Rosales-Ortega |
| author_sort | Fernando Fabián Rosales-Ortega |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-c4796d9dc4794f2e96c2fa60dbbab8ab |
| institution | Kabale University |
| issn | 1687-7969 1687-7977 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Astronomy |
| spelling | doaj-art-c4796d9dc4794f2e96c2fa60dbbab8ab2025-02-03T06:10:49ZengWileyAdvances in Astronomy1687-79691687-79772013-01-01201310.1155/2013/627867627867The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU EraFernando Fabián Rosales-Ortega0Instituto Nacional de Astrofísica, Óptica y Electrónica, Luis E. Erro 1, 72840 Tonantzintla, PUE, MexicoA 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.http://dx.doi.org/10.1155/2013/627867 |
| spellingShingle | Fernando Fabián Rosales-Ortega The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era Advances in Astronomy |
| title | The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era |
| title_full | The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era |
| title_fullStr | The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era |
| title_full_unstemmed | The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era |
| title_short | The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era |
| title_sort | study of nebular emission on nearby spiral galaxies in the ifu era |
| url | http://dx.doi.org/10.1155/2013/627867 |
| work_keys_str_mv | AT fernandofabianrosalesortega thestudyofnebularemissiononnearbyspiralgalaxiesintheifuera AT fernandofabianrosalesortega studyofnebularemissiononnearbyspiralgalaxiesintheifuera |