The dependence of oxygen and nitrogen abundances on stellar mass from the CALIFA survey
Context. The study of the integrated properties of star-forming galaxies is central to understand their formation and evolution. Some of these properties are extensive and therefore their analysis require totally covering and spatially resolved observations. Among these properties, metallicity can b...
| Autores: | , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/17602 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/17602 |
| Access Level: | acceso abierto |
| Palabra clave: | 52 Integral field spectroscopy Star-forming galaxies H-II regions Potsdam multiaperture spectrophotometer Active galactic nuclei Gas-phase abundances Digital sky survey Metallicity relation Spiral galaxies Chemical abundances Astrofísica Astronomía (Física) |
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The dependence of oxygen and nitrogen abundances on stellar mass from the CALIFA surveyMarino, Raffaella Annaotros, ...52Integral field spectroscopyStar-forming galaxiesH-II regionsPotsdam multiaperture spectrophotometerActive galactic nucleiGas-phase abundancesDigital sky surveyMetallicity relationSpiral galaxiesChemical abundancesAstrofísicaAstronomía (Física)Context. The study of the integrated properties of star-forming galaxies is central to understand their formation and evolution. Some of these properties are extensive and therefore their analysis require totally covering and spatially resolved observations. Among these properties, metallicity can be defined in spiral discs by means of integral field spectroscopy (IFS) of individual H II regions. The simultaneous analysis of the abundances of primary elements, as oxygen, and secondary, as nitrogen, also provides clues about the star formation history and the processes that shape the build-up of spiral discs. Aims. Our main aim is to analyse simultaneously O/H and N/O abundance ratios in H II regions in different radial positions of the discs in a large sample of spiral galaxies to obtain the slopes and the characteristic abundance ratios that can be related to their integrated properties. Methods. We analysed the optical spectra of individual selected H II regions extracted from a sample of 350 spiral galaxies of the CALIFA survey. We calculated total O/H abundances and, for the first time, N/O ratios using the semi-empirical routine H II-C HI-MISTRY, which, according to Perez-Montero (2014, MNRAS, 441, 2663), is consistent with the direct method and reduces the uncertainty in the O/H derivation using [N II] lines owing to the dispersion in the O/H-N/O relation. Then we performed linear fittings to the abundances as a function of the de-projected galactocentric distances. Results. The analysis of the radial distribution both for O/H and N/O in the non-interacting galaxies reveals that both average slopes are negative, but a non-negligible fraction of objects have a flat or even a positive gradient (at least 10% for O/H and 4% for N/O). The slopes normalised to the effective radius appear to have a slight dependence on the total stellar mass and the morphological type, as late low-mass objects tend to have flatter slopes. No clear relation is found, however, to explain the presence of inverted gradients in this sample, and there is no dependence between the average slopes and the presence of a bar. The relation between the resulting O/H and N/O linear fittings at the effective radius is much tighter (correlation coefficient ρ_s = 0.80) than between O/H and N/O slopes (ρ_s = 0.39) or for O/H and N/O in the individual H ii regions (ρ_s = 0.37). These O/H and N/O values at the effective radius also correlate very tightly (less than 0.03 dex of dispersion) with total luminosity and stellar mass. The relation with other integrated properties, such as star formation rate, colour, or morphology, can be understood only in light of the found relation with mass.EDP ScienciesUniversidad Complutense de Madrid20162016-11-0120162016-11-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/17602reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/176022026-06-02T12:44:21Z |
| dc.title.none.fl_str_mv |
The dependence of oxygen and nitrogen abundances on stellar mass from the CALIFA survey |
| title |
The dependence of oxygen and nitrogen abundances on stellar mass from the CALIFA survey |
| spellingShingle |
The dependence of oxygen and nitrogen abundances on stellar mass from the CALIFA survey Marino, Raffaella Anna 52 Integral field spectroscopy Star-forming galaxies H-II regions Potsdam multiaperture spectrophotometer Active galactic nuclei Gas-phase abundances Digital sky survey Metallicity relation Spiral galaxies Chemical abundances Astrofísica Astronomía (Física) |
| title_short |
The dependence of oxygen and nitrogen abundances on stellar mass from the CALIFA survey |
| title_full |
The dependence of oxygen and nitrogen abundances on stellar mass from the CALIFA survey |
| title_fullStr |
The dependence of oxygen and nitrogen abundances on stellar mass from the CALIFA survey |
| title_full_unstemmed |
The dependence of oxygen and nitrogen abundances on stellar mass from the CALIFA survey |
| title_sort |
The dependence of oxygen and nitrogen abundances on stellar mass from the CALIFA survey |
| dc.creator.none.fl_str_mv |
Marino, Raffaella Anna otros, ... |
| author |
Marino, Raffaella Anna |
| author_facet |
Marino, Raffaella Anna otros, ... |
| author_role |
author |
| author2 |
otros, ... |
| author2_role |
author |
| dc.contributor.none.fl_str_mv |
Universidad Complutense de Madrid |
| dc.subject.none.fl_str_mv |
52 Integral field spectroscopy Star-forming galaxies H-II regions Potsdam multiaperture spectrophotometer Active galactic nuclei Gas-phase abundances Digital sky survey Metallicity relation Spiral galaxies Chemical abundances Astrofísica Astronomía (Física) |
| topic |
52 Integral field spectroscopy Star-forming galaxies H-II regions Potsdam multiaperture spectrophotometer Active galactic nuclei Gas-phase abundances Digital sky survey Metallicity relation Spiral galaxies Chemical abundances Astrofísica Astronomía (Física) |
| description |
Context. The study of the integrated properties of star-forming galaxies is central to understand their formation and evolution. Some of these properties are extensive and therefore their analysis require totally covering and spatially resolved observations. Among these properties, metallicity can be defined in spiral discs by means of integral field spectroscopy (IFS) of individual H II regions. The simultaneous analysis of the abundances of primary elements, as oxygen, and secondary, as nitrogen, also provides clues about the star formation history and the processes that shape the build-up of spiral discs. Aims. Our main aim is to analyse simultaneously O/H and N/O abundance ratios in H II regions in different radial positions of the discs in a large sample of spiral galaxies to obtain the slopes and the characteristic abundance ratios that can be related to their integrated properties. Methods. We analysed the optical spectra of individual selected H II regions extracted from a sample of 350 spiral galaxies of the CALIFA survey. We calculated total O/H abundances and, for the first time, N/O ratios using the semi-empirical routine H II-C HI-MISTRY, which, according to Perez-Montero (2014, MNRAS, 441, 2663), is consistent with the direct method and reduces the uncertainty in the O/H derivation using [N II] lines owing to the dispersion in the O/H-N/O relation. Then we performed linear fittings to the abundances as a function of the de-projected galactocentric distances. Results. The analysis of the radial distribution both for O/H and N/O in the non-interacting galaxies reveals that both average slopes are negative, but a non-negligible fraction of objects have a flat or even a positive gradient (at least 10% for O/H and 4% for N/O). The slopes normalised to the effective radius appear to have a slight dependence on the total stellar mass and the morphological type, as late low-mass objects tend to have flatter slopes. No clear relation is found, however, to explain the presence of inverted gradients in this sample, and there is no dependence between the average slopes and the presence of a bar. The relation between the resulting O/H and N/O linear fittings at the effective radius is much tighter (correlation coefficient ρ_s = 0.80) than between O/H and N/O slopes (ρ_s = 0.39) or for O/H and N/O in the individual H ii regions (ρ_s = 0.37). These O/H and N/O values at the effective radius also correlate very tightly (less than 0.03 dex of dispersion) with total luminosity and stellar mass. The relation with other integrated properties, such as star formation rate, colour, or morphology, can be understood only in light of the found relation with mass. |
| publishDate |
2016 |
| dc.date.none.fl_str_mv |
2016 2016-11-01 2016 2016-11-01 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/20.500.14352/17602 |
| url |
https://hdl.handle.net/20.500.14352/17602 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
EDP Sciencies |
| publisher.none.fl_str_mv |
EDP Sciencies |
| dc.source.none.fl_str_mv |
reponame:Docta Complutense instname:Universidad Complutense de Madrid (UCM) |
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Universidad Complutense de Madrid (UCM) |
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Docta Complutense |
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Docta Complutense |
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