J/A+A/559/A114ivo://CDS.VizieR/J/A+A/559/A114doi:10.26093/cds/vizier.35590114CDSMarino R.A.Rosales-Ortega F.F.Sanchez S.F.Gil de Paz A.Vilchez J.,Miralles-Caballero D.Kehrig C.Perez-Montero E.Stanishev V.,Iglesias-Paramo J.Diaz A.I.Castillo-Morales A.Kennicutt R.,Lopez-Sanchez A.R.Galbany L.Garcia-Benito R.Mast D.Mendez-Abreu J.,Monreal-Ibero A.Husemann B.Walcher C.J.Garcia-Lorenzo B.Masegosa J.,del Olmo Orozco A.Mourao A.M.Ziegler B.M.MollaPapaderos P.,Sanchez-Blazquez P.Gonzalez Delgado R.M.Falcon-Barroso J.Roth M.M.,van de Ven G.CALIFA team2026-01-20T12:11:00Z2013-11-25T09:12:41ZCDS support team

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

cds-question@unistra.frh-ii-regionsspectroscopychemical-abundancesThe use of integral field spectroscopy is since recently allowing to measure the emission line fluxes of an increasingly large number of star-forming galaxies both locally and at high redshift. Many studies have used these fluxes to derive gas-phase metallicity of the galaxies by applying the so-called strong-line methods. However, the metallicity indicators that these datasets use were empirically calibrated using few direct abundance data points (Te-based measurements). Furthermore, a precise determination of the prediction intervals of these indicators is commonly lacking in these calibrations. Such limitations might lead to systematic errors in determining the gas-phase metallicity, especially at high redshift, which might have a strong impact on our understanding of the chemical evolution of the Universe. The main goal of this study is to review the most widely used empirical oxygen calibrations, O3N2 and N2, by using new direct abundance measurements. We pay special attention to (1) the expected uncertainty of these calibrations as a function of the index value or abundance derived and (2) the presence of possible systematic offsets. This is possible thanks to the analysis of the most ambitious compilation of Te-based Hii regions to date. This new dataset compiles the Te-based abundances of 603 Hii regions extracted from the literature but also includes new measurements from the CALIFA survey.2013A&A...559A.114Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/559/A114CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/361/1063 : Oxygen abundances of HII regions (Perez-Montero+, 2005)J/A+A/462/535 : Low-metallicity HII regions and galaxies (Yin+, 2007)J/ApJ/735/71 : Oxygen abundances in outlying HII regions (Werk+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/559/A114https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/559/A114http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/559/A114https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/559/A114https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/559/A114http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/559/A114GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/559/A114/table4 (Oxygen, O3N2 and N2 index abundances for Te-based HII regions abundances (Figs. 2 and 4))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/559/A114/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/559/A114/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/559/A114/table4?GETtext/xml+votable180.050000true202.49847.23272220.0055555555555555566/38 816 955 2109 2154-2155 2241 2258 2623 2666 2708-2709 3042 4251 4534 4948 5026 5168 5203 5283 5419 5556 5607 6010-6011 6034 6046 6075 6087 6098 6419 6605 6619 6995 7022 7190 7243 7251 7257 7261 7273 7281 7381 7498 7584 7604 7606 7683 7692 7743 7878 7926 7946 8028 9060 9112 9190 9855 9954 9966 10106 10221 10328 10348 10388 10472 10481 10488 10561 10587 10607 10638 10674 10689 10762 10769 10888 10892 10911 10927 10970 11026-11027 11031 11132 11137 11177-11178 11239 11355 11380 11434 11544 11696 15592 16441 16519 16686 17165 17725 17865 17867 18002 18027 18038 18081 18099 18198 18235 18398 18429 18793 18809 18858 18934 19073 19172 19417 19538 19570 19779 20183 20193 20388 20400 21439 22828 23078 23566 24624 24696 25045 25169 25227 25253 25344 25594 25659 25734 26278 26362 26821 26963 26971 26992 27199 27243 27457 27713 27731 27765 27926 27945 28077 28149 28335 28500 28505 28617 28631 28636 29654 29718 33094 33123 33193 34170 34243 34430 34478 34498 34531 35214 35238 35452 35514 35536 35538 35576 36258 36756 36861 38390 38655 38821 38829 38833 38846 38906 39384 39574 39804 40124 40255 41987 43420 43635 43720 43754 43763 43788 43829 43845 43874 43881 43976 44236 44722 47701https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/559/A114?format=asciidefaultJ/A+A/559/A114/emlinesDereddened emission line ratios, temperatures and oxygen abundances derived for the CALIFA Te (tables 2 and 3)e_5007Error on [OIII]5007/H{beta} ratiostat.errorfloat6583Emission line ratio [NII]6583/H{alpha} (1)spect.line.intensity;arith.ratiofloate_6583Error on [NII]6583/H{alpha} ratiostat.errorfloatFHbH{beta} flux (in 10^-16^erg/cm^2^/s)1e-19W.m**-2phot.flux;em.line.Hbetafloate_FHbError on FHb1e-19W.m**-2stat.errorfloatAVV-bhand extinction obtained from the Balmer decrement (H{alpha}/H{beta}) (2)magphys.absorptionfloatS/N[3/17] Signal to noise ratio from [OIII]4363stat.snrfloatT3Temperature derived for the Te-CALIFA HII regionsKphys.temperatureinte_T3Error on T3Kstat.errorintAb(O)[7.8/8.5] Oxygen abundance (12+log(O/H)) derived for the Te-CALIFA HII regionsphys.abundfloate_Ab(O)Error on Ab(O)stat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID for the Te-CALIFA HII regionsmeta.id;meta.mainchar3726Emission line ratio [OII]3726,29/H{beta} (1)spect.line.intensity;arith.ratiofloate_3726Error on [OII]3726,29/H{beta} ratiostat.errorfloat4363Emission line ratio [OIII]4363/H{beta} (1)spect.line.intensity;arith.ratiofloate_4363Error on [OIII]4363/H{beta} ratiostat.errorfloat5007Emission line ratio [OIII]5007/H{beta} (1)spect.line.intensity;arith.ratiofloatJ/A+A/559/A114/table4Oxygen, O3N2 and N2 index abundances for Te-based HII regions abundances (Figs. 2 and 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference number (in table1.dat)meta.bibintn_IDmeta.ref.urlcharIDID for the Te HII region (literature+CALIFA data)meta.id;meta.maincharprimary[O3N2]log[([OIII]5007/H{beta})/([NII]6583/H{alpha})] abundancespect.indexdouble[N2]log([NII]6583/H{alpha}) abundancespect.indexdoubleAb(O)Oxygen abundance 12+log(O/H) derived for the Te-HII regionsphys.abunddouble_RAPositions from Simbad and references cited (right ascension part)degpos.eq.ra;meta.mainnullable_DEPositions from Simbad and references cited (declination part)degpos.eq.dec;meta.mainnullableSimbadNameSimbad column added by the CDSmeta.idnullableJ/A+A/559/A114/table5Oxygen, O3N2 and N2 index abundances for the complexes detected within the CALIFA galaxies (figs. 3 and 5)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID for the CALIFA-ONS HII regionsmeta.id;meta.mainchar[O3N2]log[([OIII]5007/H{beta})/([NII]6583/H{alpha})] abundancespect.indexdouble[N2]log([NII]6583/H{alpha}) N2 abundancespect.indexdoubleAb(O)? Oxygen abundance 12+log(O/H) derived for the CALIFA-ONSphys.abunddoublenullableJ/A+A/559/A114/table1Bibliographic references to the original works for the compiled Te-sampleRefReference numbermeta.id;meta.mainintprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAutAuthor's namemeta.bib.authorcharBibCodeBibCodemeta.bib.bibcodecharnHIINumber of HII regions for this referencemeta.numberintAlAuroral lines for this reference (1)meta.notechar