J/ApJS/208/10ivo://CDS.VizieR/J/ApJS/208/10doi:10.26093/cds/vizier.22080010CDSDopita M.A.Sutherland R.S.Nicholls D.C.Kewley L.J.Vogt F.P.A.2017-06-30T05:48:15Z2013-10-28T09:16:07ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fratomic-physicsh-ii-regionschemical-abundancesRecently, Nicholls et al. (2012ApJ...752..148N), inspired by in situ observations of solar system astrophysical plasmas, suggested that the electrons in H II regions are characterized by a {kappa}-distribution of energies rather than a simple Maxwell-Boltzmann distribution. Here, we have collected together new atomic data within a modified photoionization code to explore the effects of both the new atomic data and the {kappa}-distribution on the strong-line techniques used to determine chemical abundances in H II regions. By comparing the recombination temperatures (T_rec_) with the forbidden line temperatures (T_FL_), we conclude that {kappa}~20. While representing only a mild deviation from equilibrium, this result is sufficient to strongly influence abundances determined using methods that depend on measurements of the electron temperature from forbidden lines. We present a number of new emission line ratio diagnostics that cleanly separate the two parameters determining the optical spectrum of H II regions--the ionization parameter q or {} and the chemical abundance, 12+log(O/H). An automated code to extract these parameters is presented. Using the homogeneous data set from van Zee et al. 1998, Cat. J/AJ/116/2805, we find self-consistent results between all of these different diagnostics. The systematic errors between different line ratio diagnostics are much smaller than those found in the earlier strong-line work. Overall, the effect of the {kappa}-distribution on the strong-line abundances derived solely on the basis of theoretical models is rather small.2013ApJS..208...10Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/208/10CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/528/A69 : Li-like iso-electronic sequence (Liang+, 2011)J/ApJS/188/32 : Breit-Pauli transition probabilities for SII (Tayal+, 2010)J/A+A/486/629 : Effective collision strengths for C II (Tayal, 2008)J/ApJS/163/207 : Oscillator and collision strengths in NI (Tayal+, 2006)J/AJ/116/2805 : H II regions in spiral galaxies (Van Zee+, 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/208/10https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/208/10http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/208/10https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/208/10https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/208/10http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/208/10GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/208/10/table1Literature sources used for collision strength datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIon identificationphys.atmol.ionStagecharAutAuthor's name(s)meta.bib.authorcharBibCodeBibcodemeta.bib.bibcodecharCommVizieR catalog reference or commentmeta.ref;pos.frame;meta.tablecharJ/ApJS/208/10/modelLine fluxes (relative to H{beta}=1.0) and temperatures given by the MAPPINGS 4 modelsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintZ[0.05/5] Model metallicity (relative to Sun)Sunphys.abund.Z;meta.modelledfloatkappa[10/50]? Model {kappa} valuestat.paramintnullablelogq[6.5/8.5] Model ionization parameter (G1)log(m.s**-1)stat.paramfloatO2-3727The [O II] 3727{AA} line flux (1)spect.line.intensity;arith.ratiofloatO2-3729The [O II] 3729{AA} line flux (1)spect.line.intensity;arith.ratiofloatNe3-3869The [Ne III] 3869 line flux (1)spect.line.intensity;arith.ratiofloatS2-4068The [S II] 4068,78 line flux (1)spect.line.intensity;arith.ratiofloatHgThe H{gamma} 4340 line flux (1)spect.line.intensity;arith.ratiofloatO3-4363The [O III] 4363 line flux (1)spect.line.intensity;arith.ratiofloatHe1-4471The He I 4471 line flux (1)spect.line.intensity;arith.ratiofloatO3-4959The [O III] 4959 line flux (1)spect.line.intensity;arith.ratiofloatO3-5007The [O III] 5007 line flux (1)spect.line.intensity;arith.ratiofloatHe1-5016The He I 5016 line flux (1)spect.line.intensity;arith.ratiofloatAr3-5192The [Ar III] 5192 line flux (1)spect.line.intensity;arith.ratiofloatN1-5198The [N I] 5190,00 line flux (1)spect.line.intensity;arith.ratiofloatN2-5755The [N II] 5755 line flux (1)spect.line.intensity;arith.ratiofloatHe1-5875The He I 5875{AA} line flux (1)spect.line.intensity;arith.ratiofloatO1-6300The [O I] 6300{AA} line flux (1)spect.line.intensity;arith.ratiofloatS3-6313The [S III] 6312{AA} line flux (1)spect.line.intensity;arith.ratiofloatN2-6548The [N II] 6548{AA} line flux (1)spect.line.intensity;arith.ratiofloatHaThe H{alpha} line flux (1)spect.line.intensity;arith.ratiofloatN2-6584The [N II] 6584{AA} line flux (1)spect.line.intensity;arith.ratiofloatHe1-6678The He I 6678{AA} line flux (1)spect.line.intensity;arith.ratiofloatS2-6717The [S II] 6717{AA} line flux (1)spect.line.intensity;arith.ratiofloatS2-6731The [S II] 6731{AA} line flux (1)spect.line.intensity;arith.ratiofloatAr3-7136The [Ar III] 7136{AA} line flux (1)spect.line.intensity;arith.ratiofloatO2-7318The [O II] 7318{AA} line flux (1)spect.line.intensity;arith.ratiofloatAr3-7751The [Ar III] 7751{AA} line flux (1)spect.line.intensity;arith.ratiofloatS3-9068The [S III] 9068{AA} line flux (1)spect.line.intensity;arith.ratiofloatS3-9532The [S III] 9532{AA} line flux (1)spect.line.intensity;arith.ratiofloatTH[1916/14450] Hydrogen model temperatureKphys.temperatureintTHe[1994/14270] Helium model temperatureKphys.temperatureintTO3[4613/16577]? The [O III] model temperatureKphys.temperatureintnullableTAr3[4256/14070]? The [Ar III] model temperatureKphys.temperatureintnullableTS3[2804/13886]? The [S III] model temperatureKphys.temperatureintnullableTO2[2987/12506]? The [O II] model temperatureKphys.temperatureintnullableTN2[2833/12655]? The [N II] model temperatureKphys.temperatureintnullableTS2[2373/8451] The [S II] model temperatureKphys.temperatureint