The DOI matches its Crossref record; 15 of the 15 references it cites were found in a registry or an index.
New light on the search for low-metallicity galaxies — I. The N2 calibrator
Open accessAbstract
We present a simple metallicity estimator based on the logarithmic [N ii] λ6584/Hα ratio, hereafter N2, which we envisage will become very useful for ranking galaxies in a metallicity sequence from redshift survey-quality data even for moderately low spectral resolution. We have calibrated the N2 estimator using a compilation of H ii galaxies having accurate oxygen abundances, plus photoionization models covering a wide range of abundances. The comparison of models and observations indicates that both primary and secondary nitrogen are important for the relevant range of metallicities. The N2 estimator follows a linear relation with log(O/H) that holds for the whole abundance range covered by the sample, from approximately 1/50th to twice the Solar value [7.2<12+log(O/H)<9.1]. We suggest that the ([S ii] λλ6717,6731/Hα) ratio (hereafter S2) can also be used as a rough metallicity indicator. Because of its large scatter the S2 estimator will be useful only in systems with very low metallicity, where [N ii] λ6584 is not detected or in low-resolution spectra where [N ii] λ6584 is blended with Hα.
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Cites
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On the composition of H II regions in southern galaxies - I. NGC 300 and 1365
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Synthetic properties of starburst galaxies
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“The ranking of EW(Hβ) with age (Copetti, Pastoriza & Dottori, 1986; Leitherer & Heckman 1995) goes in the sense that EW(Hβ) in emission reaches values of several hundred Å for an H ii region photoionized by a zero-age coeval stellar population and decreases as the cluster evolves and the stellar…”
BackgroundH II region abundances - Model oxygen line ratios
McGaugh, S. (1991) · The Astrophysical Journal · doi:10.1086/170569 · Cited by 665
The primordial helium abundance from observations of extragalactic H II regions
Pagel, B. E. J., Simonson, E. A., Terlevich, R. J., & Edmunds, M. G. (1992) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/255.2.325 · Cited by 579
Self-citationThe chemistry of galaxies. I - The nature of giant extragalactic H II regions
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The primordial helium abundance from a new sample of metal-deficient blue compact galaxies
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On the Cosmic Origins of Carbon and Nitrogen
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On Measuring Nebular Chemical Abundances in Distant Galaxies Using Global Emission‐Line Spectra
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On the composition of H II regions in southern galaxies - III. NGC 2997 and 7793
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Cited by
The Recent Star Formation Histories of M81 Group Dwarf Irregular Galaxies
Weisz, D. R., Skillman, E. D., Cannon, J. M., Dolphin, A. E., Kennicutt, Jr., Lee, J., & Walter, F. (2008) · The Astrophysical Journal · doi:10.1086/592323 · Cited by 135
Metadata
- Authors
- Denicoló, G., Terlevich, R., & Terlevich, E.
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 2002-02
- Volume
- 330
- Issue
- 1
- Pages
- 69-74
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W2015110151
- Cited by
- 451
- References
- 15
- FWCI
- 12.48
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Denicoló, G., Terlevich, R., & Terlevich, E. (2002). New light on the search for low-metallicity galaxies — I. The N2 calibrator. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1046/j.1365-8711.2002.05041.x
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
