@misc{asari2016bayesian,
  abstract = {We present BOND, a Bayesian code to simultaneously derive oxygen and nitrogen
abundances in giant H II regions. It compares observed emission lines to a grid
of photoionization models without assuming any relation between O/H and N/O.
Our grid spans a wide range in O/H, N/O and ionization parameter U, and covers
different starburst ages and nebular geometries. Varying starburst ages
accounts for variations in the ionizing radiation field hardness, which arise
due to the ageing of H II regions or the stochastic sampling of the initial
mass function. All previous approaches assume a strict relation between the
ionizing field and metallicity. The other novelty is extracting information on
the nebular physics from semi-strong emission lines. While strong lines ratios
alone ([O III]/Hbeta, [O II]/Hbeta and [N II]/Hbeta) lead to multiple O/H
solutions, the simultaneous use of [Ar III]/[Ne III] allows one to decide
whether an H II region is of high or low metallicity. Adding He I/Hbeta pins
down the hardness of the radiation field. We apply our method to H II regions
and blue compact dwarf galaxies, and find that the resulting N/O vs O/H
relation is as scattered as the one obtained from the temperature-based method.
As in previous strong-line methods calibrated on photoionization models, the
BOND O/H values are generally higher than temperature-based ones, which might
indicate the presence of temperature fluctuations or kappa distributions in
real nebulae, or a too soft ionizing radiation field in the models.},
  added-at = {2016-05-05T09:48:33.000+0200},
  author = {Asari, N. Vale and Stasińska, G. and Morisset, C. and Fernandes, R. Cid},
  biburl = {http://www.bibsonomy.org/bibtex/2d216745f4efae09b27371d9d5ee894a9/miki},
  description = {[1605.01057] BOND: Bayesian Oxygen and Nitrogen abundance Determinations in giant H II regions using strong and semi-strong lines},
  doi = {10.1093/mnras/stw971},
  interhash = {9ae3d4984b68357ccc708c0b77219ac7},
  intrahash = {d216745f4efae09b27371d9d5ee894a9},
  keywords = {models regions HII},
  note = {cite arxiv:1605.01057Comment: MNRAS in press; 21 pages, 22 figures, 2 tables; code, data and  results available at http://bond.ufsc.br},
  timestamp = {2016-05-05T09:48:33.000+0200},
  title = {BOND: Bayesian Oxygen and Nitrogen abundance Determinations in giant H
  II regions using strong and semi-strong lines},
  url = {http://arxiv.org/abs/1605.01057},
  year = 2016
}

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Varying starburst ages accounts for variations in the ionizing radiation field hardness, which arise due to the ageing of H II regions or the stochastic sampling of the initial mass function. All previous approaches assume a strict relation between the ionizing field and metallicity. The other novelty is extracting information on the nebular physics from semi-strong emission lines. While strong lines ratios alone ([O III]/Hbeta, [O II]/Hbeta and [N II]/Hbeta) lead to multiple O/H solutions, the simultaneous use of [Ar III]/[Ne III] allows one to decide whether an H II region is of high or low metallicity. Adding He I/Hbeta pins down the hardness of the radiation field. We apply our method to H II regions and blue compact dwarf galaxies, and find that the resulting N/O vs O/H relation is as scattered as the one obtained from the temperature-based method. As in previous strong-line methods calibrated on photoionization models, the BOND O/H values are generally higher than temperature-based ones, which might indicate the presence of temperature fluctuations or kappa distributions in real nebulae, or a too soft ionizing radiation field in the models.","added-at":"2016-05-05T09:48:33.000+0200","author":[{"propositions":[],"lastnames":["Asari"],"firstnames":["N.","Vale"],"suffixes":[]},{"propositions":[],"lastnames":["Stasińska"],"firstnames":["G."],"suffixes":[]},{"propositions":[],"lastnames":["Morisset"],"firstnames":["C."],"suffixes":[]},{"propositions":[],"lastnames":["Fernandes"],"firstnames":["R.","Cid"],"suffixes":[]}],"biburl":"http://www.bibsonomy.org/bibtex/2d216745f4efae09b27371d9d5ee894a9/miki","description":"[1605.01057] BOND: Bayesian Oxygen and Nitrogen abundance Determinations in giant H II regions using strong and semi-strong lines","doi":"10.1093/mnras/stw971","interhash":"9ae3d4984b68357ccc708c0b77219ac7","intrahash":"d216745f4efae09b27371d9d5ee894a9","keywords":"models regions HII","note":"cite arxiv:1605.01057Comment: MNRAS in press; 21 pages, 22 figures, 2 tables; code, data and results available at http://bond.ufsc.br","timestamp":"2016-05-05T09:48:33.000+0200","title":"BOND: Bayesian Oxygen and Nitrogen abundance Determinations in giant H II regions using strong and semi-strong lines","url":"http://arxiv.org/abs/1605.01057","year":"2016","bibtex":"@misc{asari2016bayesian,\n abstract = {We present BOND, a Bayesian code to simultaneously derive oxygen and nitrogen\r\nabundances in giant H II regions. It compares observed emission lines to a grid\r\nof photoionization models without assuming any relation between O/H and N/O.\r\nOur grid spans a wide range in O/H, N/O and ionization parameter U, and covers\r\ndifferent starburst ages and nebular geometries. Varying starburst ages\r\naccounts for variations in the ionizing radiation field hardness, which arise\r\ndue to the ageing of H II regions or the stochastic sampling of the initial\r\nmass function. All previous approaches assume a strict relation between the\r\nionizing field and metallicity. The other novelty is extracting information on\r\nthe nebular physics from semi-strong emission lines. While strong lines ratios\r\nalone ([O III]/Hbeta, [O II]/Hbeta and [N II]/Hbeta) lead to multiple O/H\r\nsolutions, the simultaneous use of [Ar III]/[Ne III] allows one to decide\r\nwhether an H II region is of high or low metallicity. Adding He I/Hbeta pins\r\ndown the hardness of the radiation field. We apply our method to H II regions\r\nand blue compact dwarf galaxies, and find that the resulting N/O vs O/H\r\nrelation is as scattered as the one obtained from the temperature-based method.\r\nAs in previous strong-line methods calibrated on photoionization models, the\r\nBOND O/H values are generally higher than temperature-based ones, which might\r\nindicate the presence of temperature fluctuations or kappa distributions in\r\nreal nebulae, or a too soft ionizing radiation field in the models.},\n added-at = {2016-05-05T09:48:33.000+0200},\n author = {Asari, N. Vale and Stasińska, G. and Morisset, C. and Fernandes, R. Cid},\n biburl = {http://www.bibsonomy.org/bibtex/2d216745f4efae09b27371d9d5ee894a9/miki},\n description = {[1605.01057] BOND: Bayesian Oxygen and Nitrogen abundance Determinations in giant H II regions using strong and semi-strong lines},\n doi = {10.1093/mnras/stw971},\n interhash = {9ae3d4984b68357ccc708c0b77219ac7},\n intrahash = {d216745f4efae09b27371d9d5ee894a9},\n keywords = {models regions HII},\n note = {cite arxiv:1605.01057Comment: MNRAS in press; 21 pages, 22 figures, 2 tables; code, data and results available at http://bond.ufsc.br},\n timestamp = {2016-05-05T09:48:33.000+0200},\n title = {BOND: Bayesian Oxygen and Nitrogen abundance Determinations in giant H\r\n II regions using strong and semi-strong lines},\n url = {http://arxiv.org/abs/1605.01057},\n year = 2016\n}\n\n","author_short":["Asari, N. V.","Stasińska, G.","Morisset, C.","Fernandes, R. 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