J/MNRAS/460/1739ivo://CDS.VizieR/J/MNRAS/460/1739doi:10.26093/cds/vizier.74601739CDSVale Asari N.Stasinska G.Morisset C.Cid Fernandes R.2024-08-16T20:17:09Z2017-11-21T10:04:40ZCDS support team

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

cds-question@unistra.frgalaxiesh-ii-regionschemical-abundancesWe present the Bayesian oxygen and nitrogen abundance determinations (bond) method. bond is a Bayesian code (available at: http://bond.ufsc.br) to simultaneously derive oxygen and nitrogen abundances in giant HII 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 HII 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 semistrong emission lines. While strong lines ratios alone ([OIII]/H{beta}, [OII]/H{beta} and [NII]/H{beta}) lead to multiple O/H solutions, the simultaneous use of [ArIII]/[NeIII] allows one to decide whether an HII region is of high or low metallicity. Adding HeI/H{beta} pins down the hardness of the radiation field. We apply our method to HII regions and blue compact dwarf galaxies, and find that the resulting N/O versus 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.2016MNRAS.460.1739Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/460/1739CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/460/1739https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/460/1739http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/460/1739https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/460/1739https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/460/1739http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/460/1739GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/460/1739/table1 (Giant HII regions and blue compact dwarves emission lines)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/460/1739/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/460/1739/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/460/1739/table1?GETtext/xml+votable180.050000true47.439625-20.57930560.0055555555555555566/38 2109 2155 2258 2320 2708 4511 5203 5366 5419 5556 5624 5715 5764 5964 6005 6010-6011 6042 6046 6075 6087 6361 6619 6995 7208 7243 7251-7252 7261 7273 7281 7381 7584 7683 7692 7741 7743 7878 7926 7946 8028 9112 9954 10348 10472 10475 10561 10587 10689 10727 10771 10888 10901 10970 11009 11026-11027 11031 11132 11137 11177-11178 11180 11239 11355 11382 11428 11434 11782 13380 16042 17771 17867 18002 18099 18198 18235 18398 19417 19702 19828 19858 20388 22751 22828 22890 23078 23566 25344 25594 26362 26971 26992 27079 27243 27457 27884 28077 28335 28535 28541 28631 34382 34401 34404 34531 35536 35538 36258 36756 38390 38655 43754 43881https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/460/1739?format=asciidefaultJ/MNRAS/460/1739/table1Giant HII regions and blue compact dwarves emission linesSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintId[1/708] Sequnetial numbermeta.id;meta.mainintr_IdReference for Id (1)meta.ref;pos.framecharNameHII region name (NGC_NNNN_NNNN)meta.id;obs.fieldcharF3727Line flux of [OII] 3737{AA} relative to H{beta}phot.flux;spect.line;arith.ratiodoublee_F3727rms uncertainty on F3727stat.errordoubleF3869? Line flux of [NeII] 3869{AA} relative to H{beta}phot.flux;spect.line;arith.ratiodoublenullablee_F3869? rms uncertainty on F3869stat.errordoublenullableF4363? Line flux of [OIII] 4363{AA} relative to H{beta}phot.flux;em.line.OIII;spect.linedoublenullablee_F4363? rms uncertainty on F4363stat.errordoublenullableF5007Line flux of [OIII] 5007{AA} relative to H{beta}phot.flux;em.line.OIII;spect.linedoublee_F5007rms uncertainty on F5007stat.errordoubleF5755? Line flux of [NII] 5755{AA} relative to H{beta}phot.flux;spect.line;arith.ratiodoublenullablee_F5755? rms uncertainty on F5755stat.errordoublenullableF5876? Line flux of [HeI] 5876{AA} relative to H{beta}phot.flux;spect.line;arith.ratiodoublenullablee_F5876? rms uncertainty on F5876stat.errordoublenullableF6584Line flux of [NII] 6584{AA} relative to H{beta}phot.flux;spect.line;arith.ratiodoublee_F6584rms uncertainty on F6584stat.errordoubleF7135? Line flux of [ArIII] 7153{AA} relative to H{beta}phot.flux;spect.line;arith.ratiodoublenullablee_F7135? rms uncertainty on F7135stat.errordoublenullablelimF4363? Upper limit of [OIII] 4363{AA} line flux relative to H{beta}phot.flux;em.line.OIII;stat.maxdoublenullablelimF5755? Upper limit of [NII] 5755{AA} line flux relative to H{beta}phot.flux;stat.maxdoublenullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainnullable_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnullableJ/MNRAS/460/1739/table2BOND results for B of Giant HII regions and blue compact dwarvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintId[1/708] Sequnetial numbermeta.id;meta.mainintlogO/H(jmod)Maximun a posteriori logO/Hphys.abunddoublelogN/O(jmod)Maximun a posteriori logN/Ophys.abunddoublelogO/H(jc68cen)Centre term for logO/Hphys.abunddoublelogO/H(jc68sig)68% credibility ellipse error for logO/Hphys.abunddoublelogN/O(jc68cen)Centre term for logN/Ophys.abunddoublelogN/O(jc68sig)68% credibility ellipse error for logN/Ophys.abunddoublejc68(cov)Covariance term used to construct the 68 per cent credibility ellipsestat.covariancedoublejc68(scale)Scaling used to construct the 68 per cent credibility ellipsestat.fit.paramdoublelogO/H(mmed)Marginalized median value of logO/Hphys.abunddoublelogN/O(mmed)Marginalized median value of logN/Ophys.abunddoublelogO/H(mp68l)Lower value of 68% equal-tailed interval for logO/Hphys.abunddoublelogO/H(mp68u)Upper value of 68% equal-tailed interval for logO/Hphys.abunddoublelogN/O(mp68l)Lower value of 68% equal-tailed interval for logN/Ophys.abunddoublelogN/O(mp68u)Upper value of 68% equal-tailed interval for logN/Ophys.abunddouble