J/MNRAS/500/2359ivo://CDS.VizieR/J/MNRAS/500/2359doi:10.26093/cds/vizier.75002359CDSZurita A.Florido E.Bresolin F.Perez-Montero E.Perez I.2024-08-21T20:16:46Z2020-12-18T09:15:54ZCDS support team

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

cds-question@unistra.frgalaxiesh-ii-regionschemical-abundancesStudies of gas-phase radial metallicity profiles in spirals published in the last decade have diminished the importance of galactic bars as agents that mix and flatten the profiles, contradicting results obtained in the 1990s. We have collected a large sample of 2831 published HII region emission-line fluxes in 51 nearby galaxies, including objects both with and without the presence of a bar, with the aim of revisiting the issue of whether bars affect the radial metal distribution in spirals. In this first paper of a series of two, we present the galaxy and the HII region samples. The methodology is homogeneous for the whole data sample and includes the derivation of HII region chemical abundances, structural parameters of bars and discs, galactocentric distances, and radial abundance profiles. We have obtained O/H and N/O abundance ratios from the Te-based (direct) method for a sub-sample of 610 regions, and from a variety of strong-line methods for the whole HII region sample. The strong-line methods have been evaluated in relation to the Te-based one from both a comparison of the derived O/H and N/O abundances for individual HII regions, and a comparison of the abundance gradients derived from both methodologies. The median value and the standard deviation of the gradient distributions depend on the abundance method, and those based on the O3N2 indicator tend to flatten the steepest profiles, reducing the range of observed gradients. A detailed analysis and discussion of the derived O/H and N/O radial abundance gradients and y-intercepts for barred and unbarred galaxies is presented in the companion Paper II (Zurita et al., 2021MNRAS.500.2380Z). The whole HII region catalogue including emission-line fluxes, positions and derived abundances is made publicly available on the CDS VizieR facility, together with the radial abundance gradients for all galaxies.2021MNRAS.500.2359Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/500/2359CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/500/2359https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/500/2359http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/500/2359https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/500/2359https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/500/2359http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/500/2359GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/500/2359/hiicat (HII region catalogue with line fluxes, chemical abundances and positions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/500/2359/hiicat?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/500/2359/hiicat?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/500/2359/hiicat?GETtext/xml+votable180.050000true328.3547.26670.0055555555555555566/1006 1297 1811 1848 1930 2154-2155 2240-2241 2320 2372 2619 2622-2623 2666 2705 2708-2709 2752 3746 4439 4511 5142 5545 5715 6034 6040 6619 7498 7584 7603-7604 7606 7741 7743 8113 10901 10977 10979 10982 11026-11027 11434 13522 14029 14255 14306-14307 14338 14409 14624 15472-15473 15592-15593 16441 17754 18398 18930 18932 18943 20090 21439 21550 21641 22115 22406 22751 23674 23760 23767 23969 24554 26303 26472 27030 27514 27861 27918 27955 28033 28035 28535 28541 28890 28913 29116 29463 30243 31880-31881 33193 33920-33921 34379 34382 34401 34404 34531 35536 35538 35993 36258 37923-37924 38390 38653 38655 39384 39804 43881https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/500/2359?format=asciidefaultJ/MNRAS/500/2359/hiicatHII region catalogue with line fluxes, chemical abundances and positionsLocation1Location of the region (3)obs.fieldcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRegionHII region identification (1)meta.id;obs.fieldcharGalaxyHost galaxy namemeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.main[OII]3727/Hb? Reddening-corrected flux in [OII]3727 line relative to Hbetaphot.flux;spect.line;arith.ratiodoublenullable[SII]4072/Hb? Reddening-corrected flux in [SII]4068,4076 relative to Hbetaphot.flux;arith.ratiodoublenullablee_[SII]4072/Hb? Uncertainty in [SII]4072/Hbstat.errordoublenullable[OIII]4363/Hb? Reddening-corrected flux in [OIII]4363 line relative to Hbetaphot.flux;spect.line;arith.ratiodoublenullablee_[OIII]4363/Hb? Uncertainty in [OIII]4363/Hbstat.errordoublenullable[OIII]4959/Hb? Reddening-corrected flux in [OIII]4959 line relative to Hbetaphot.flux;arith.ratio;spect.linedoublenullable[OIII]5007/Hb? Reddening-corrected flux in [OIII]5007 line relative to Hbetaphot.flux;spect.line;arith.ratiodoublenullable[OIII]/Hb? Reddening-corrected flux in [OIII]4959+[OIII]5007 relative to Hbetaspect.line.intensity;arith.ratiodoublenullable[NII]5755/Hb? Reddening-corrected flux in [NII]5755 line relative to Hbetaphot.flux;arith.ratio;spect.linedoublenullablee_[NII]5755/Hb? Uncertainty in [NII]5755/Hbstat.errordoublenullable[SIII]6312/Hb? Reddening-corrected flux in [SIII]6312 line relative to Hbetaphot.flux;arith.ratio;spect.linedoublenullablee_[SIII]6312/Hb? Uncertainty on [SIII]6312/Hbstat.errordoublenullable[NII]6548/Hb? Reddening-corrected flux in [NII]6548 relative to Hbetaphot.flux;arith.ratiodoublenullableHa/Hb? Reddening-corrected flux in Halpha relative to Hbetaphot.flux;arith.ratio;spect.linedoublenullable[NII]6583/Hb? Reddening-corrected flux in [NII]6583 line relative to Hbetaphot.flux;arith.ratio;spect.linedoublenullable[NII]/Hb? Reddening-corrected flux in [NII]6548+[NII]6583 relative to Hbetaphot.flux;arith.ratiodoublenullable[SII]6717/Hb? Reddening-corrected flux in [SII]6717 line relative to Hbetaphot.flux;spect.line;arith.ratiodoublenullable[SII]6731/Hb? Reddening-corrected flux in [SII]6731 line relative to Hbetaphot.flux;spect.line;arith.ratiodoublenullable[SII]/Hb? Reddening-corrected flux in [SII]6717+[SII]6731 relative to Hbetaphot.flux;arith.ratiodoublenullable[OII]7325/Hb? Reddening-corrected flux in [OII]7320,7330 relative to Hbetaphot.flux;arith.ratiodoublenullablee_[OII]7325/Hb? Uncertainty in [OII]7325/Hbstat.errordoublenullable[SIII]9069/Hb? Reddening-corrected flux in [SIII]9069 line relative to Hbetaphot.flux;spect.line;arith.ratiodoublenullable[SIII]9532/Hb? Reddening-corrected flux in [SIII]9532 line relative to Hbetaphot.flux;arith.ratio;spect.linedoublenullable[SIII]/Hb? Reddening-corrected flux in [SIII]9069+[SIII]9532 relative to Hbetaphot.flux;arith.ratiodoublenullableC(Hb)? Hbeta reddening constant (2)phys.absorptionfloatnullableAv? Extinction in magnitudes in V band (2)magphys.absorptionfloatnullableE(B-V)? Color excess (2)magphot.color.excessfloatnullableRHII region galactocentric radius in kpckpcphys.size.radiusfloatR/r25HII region galactocentric radius in units of r25phys.size.radius;arith.ratiofloatR/reHII region galactocentric radius in units of the disk effective radius (re)phys.size.radius;arith.ratio;obs.fieldfloatRefReference of the work from which HII region emission-line fluxes and position were compiled in refs.dat filemeta.ref;phot.fluxcharLocation2Location of the region (4)obs.fieldcharOH.HCM? Oxygen abundance, 12+log(O/H), from HCM (5)phys.abundfloatnullablee_OH.HCM? Uncertainty in OH.HCMstat.errorfloatnullableOH.N2PP04? Oxygen abundance, 12+log(O/H), from N2_PP04 (5)phys.abunddoublenullableOH.O3N2PP04? Oxygen abundance, 12+log(O/H), from O3N2_PP04 (5)phys.abunddoublenullableOH.O3N2M13? Oxygen abundance, 12+log(O/H), from O3N2_M13 (5)phys.abunddoublenullableOH.N2O2B07? Oxygen abundance, 12+log(O/H), from N2O2_B07 (5)phys.abunddoublenullableOH.R23MG91? Oxygen abundance, 12+log(O/H), from R23_MG91 (5)phys.abunddoublenullableOH.R23lowMG91? Oxygen abundance, 12+log(O/H), from R23_MG91, for lower branch (5)phys.abunddoublenullableOH.R23upMG91? Oxygen abundance, 12+log(O/H), from R23_MG91, for upper branch (5)phys.abunddoublenullableOH.RPG16? Oxygen abundance, 12+log(O/H), from R_PG16 (5)phys.abunddoublenullableNO.HCM? Nitrogen-to-oxygen abundance ratio, log(N/O), from HCM (6)phys.abundfloatnullablee_NO.HCM? Uncertainty in NO.HCMstat.errorfloatnullableNO.N2O2PC09? Nitrogen-to-oxygen abundance ratio from N2O2_PC09 (6)phys.abunddoublenullableNO.N2S2PC09? Nitrogen-to-oxygen abundance ratio from N2S2_PC09 (6)phys.abunddoublenullableNO.RPG16? Nitrogen-to-oxygen abundance ratio from R_PG16 (6)phys.abunddoublenullableNe? Measured electron densitycm**-3phys.density;phys.electrondoublenullableNe.ad? Adopted electron densitycm**-3phys.density;phys.electrondoublenullableT(OIII)? Measured electron temperature from [OIII] lines: 4363/(4959+5007)Kphys.temperature.electron;phys.electronfloatnullablee_T(OIII)? Uncertainty in T(OIII)Kstat.errorfloatnullableT(OII)? Measured electron temperature from [OII] lines: 7325/(3727)Kphys.temperature.electron;phys.electronfloatnullablee_T(OII)? Uncertainty in T(OII)Kstat.errorfloatnullableT(SII)? Measured electron temperature from [SII] lines: 4072/(6717+6731)Kphys.temperature.electron;phys.electronfloatnullablee_T(SII)? Uncertainty in T(SII)Kstat.errorfloatnullableT(SIII)? Measured electron temperature from [SIII] lines: 6312/(9069+9532)Kphys.temperature.electron;phys.electronfloatnullablee_T(SIII)? Uncertainty in T(SIII)Kstat.errorfloatnullableT(NII)? Measured electron temperature from [NII] lines: 5755/(6548+6584)Kphys.temperature.electron;phys.electronfloatnullablee_T(NII)? Uncertainty in T(NII)Kstat.errorfloatnullableTe.low? Adopted Te value for the low excitation regionKphys.temperature;phys.electronfloatnullablee_Te.low? Uncertainty in Te.lowKstat.errorfloatnullablef_Te.low[-y] Flag on Te.low (7)meta.codecharTe.high? Adopted Te value for the high excitation regionKphys.temperature;phys.electronfloatnullablee_Te.high? Uncertainty in Te.highKstat.errorfloatnullableO+/H+? Ionic abundance ratio O+/H+phys.abunddoublenullablee_O+/H+? Uncertainty in O+/H+stat.error;phys.abunddoublenullableO++/H+? Ionic abundance ratio O++/H+phys.abunddoublenullablee_O++/H+? Uncertainty in O++/H+stat.error;phys.abunddoublenullableN+/H+? Ionic abundance ratio N+/H+phys.abunddoublenullablee_N+/H+? Uncertainty in N+/H+stat.error;phys.abunddoublenullableOH.Te.tw? Te-based oxygen abundance, 12+log(O/H), derived in this workphys.abundfloatnullablee_OH.Te.tw? Uncertainty in OH.Te.twstat.errorfloatnullableNO.Te.tw? Te-based nitrogen-to-oxygen abundance ratio, log(N/O), derived in this workphys.abundfloatnullablee_NO.Te.tw? Uncertainty in NO.Te.twstat.errorfloatnullableOH.Te.pw? Te-based 12+log(O/H) derived in previous work (see column 'Ref')phys.abundfloatnullablee_OH.Te.pw? Uncertainty in OH.Te.pwstat.errorfloatnullableNO.Te.pw? Te-based log(N/O) derived in previous work (see column 'Ref')phys.abundfloatnullablee_NO.Te.pw? Uncertainty in NO.Te.pwstat.errorfloatnullableJ/MNRAS/500/2359/logno_rBest-fitting parameters for the radial log(N/O) profile in the galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy namemeta.id;meta.maincharr25Galaxy radius at the 25Bmag/arcsec2 isophote (from RC3, de Vaucouleurs et al, 1991, Cat. VII/155)kpcstat.correlationfloatreGalaxy disk effective radiuskpcstat.correlationfloatmHCMs? log(N/O) abundance gradient from single linear fit (for HCM) (2)(1)kpc**-1arith.grad;phys.abunddoublenullablee_mHCMs? Uncertainty in mHCMskpc**-1stat.errordoublenullablebHCMs? Central log(N/O) (y-intercept) from single linear fit (for HCM) (2)phys.abunddoublenullablee_bHCMs? Uncertainty in bHCMsstat.errordoublenullablenHCMsNumber of data points in the fit (HCM)meta.numberintrHCMs? Correlation coefficient (single linear fit, for HCM)stat.correlationdoublenullablechi2HCMs? Reduced chi-square parameter (single linear fit, for HCM)stat.fit.chi2doublenullablesigmaHCMs? Standard deviation of the residuals (single linear fit, for HCM)stat.stdevdoublenullablemHCM.in? Inner log(N/O) gradient from double linear fit (HCM) (3)kpc**-1arith.grad;phys.abunddoublenullablee_mHCM.in? Uncertainty in mHCM.inkpc**-1stat.errordoublenullablebHCM.in? y-intercept of inner fit to log(N/O) radial profile (HCM) (3)phys.abunddoublenullablee_bHCM.in? Uncertainty in bHCM.instat.errordoublenullablemHCM.ou? Outer log(N/O) gradient from double linear fit (HCM) (3)kpc**-1arith.grad;phys.abunddoublenullablee_mHCM.ou? Uncertainty in mHCM.oukpc**-1stat.errordoublenullablebHCM.ou? y-intercept of outer fit to log(N/O) radial profile (HCM) (3)phys.abunddoublenullablee_bHCM.ou? Uncertainty in bHCM.oustat.errordoublenullablerHCMbr? Break radius in kiloparsecs (HCM radial profile)kpcstat.correlationfloatnullablee_rHCMbr? Uncertainty in rHCMbrkpcstat.errorfloatnullablechi2HCMb? Reduced chi-square parameter (double linear fit, HCM)stat.fit.chi2doublenullablesigmaHCMb? Standard deviation of the residuals (double linear fit, HCM)stat.stdevdoublenullablemN2O2s? log(N/O) gradient from single linear fit (N2O2) (2)(1)kpc**-1arith.grad;phys.abunddoublenullablee_mN2O2s? Uncertainty in mN2O2skpc**-1stat.errordoublenullablebN2O2s? Central log(N/O) (y-intercept) from single linear fit (N2O2) (2)phys.abunddoublenullablee_bN2O2s? Uncertainty in bN2O2sstat.errordoublenullablenN2O2sNumber of data points in the fit (N2O2)meta.numberintrN2O2s? Correlation coefficient (single linear fit, for N2O2)stat.correlationdoublenullablechi2N2O2s? Reduced chi-square parameter (single linear fit, for N2O2)stat.fit.chi2doublenullablesigmaN2O2s? Standard deviation of residuals (single linear fit, for N2O2)stat.stdevdoublenullablemN2O2.in? Inner log(N/O) gradient from double linear (for N2O2) (3)kpc**-1arith.grad;phys.abunddoublenullablee_mN2O2.in? Uncertainty in mN2O2.inkpc**-1stat.errordoublenullablebN2O2.in? y-intercept of inner fit to log(N/O) radial profile (N2O2) (3)phys.abunddoublenullablee_bN2O2.in? Uncertainty in bN2O2.instat.errordoublenullablemN2O2.ou? Outer log(N/O) gradient from double linear fit (N2O2) (3)kpc**-1arith.grad;phys.abunddoublenullablee_mN2O2.ou? Uncertainty in mN2O2.oukpc**-1stat.errordoublenullablebN2O2.ou? y-intercept of outer fit to log(N/O) radial profile (N2O2) (3)phys.abunddoublenullablee_bN2O2.ou? Uncertainty in bN2O2.oustat.errordoublenullablerN2O2br? Break radius in kiloparsecs (N2O2 radial profile)kpcstat.correlationfloatnullablee_rN2O2br? Uncertainty in rN2O2brkpcstat.errorfloatnullablechi2N2O2b? Reduced chi-square parameter (double linear fit, N2O2)stat.fit.chi2doublenullablesigmaN2O2b? Standard deviation of the residuals (double linear fit, N2O2)stat.stdevdoublenullablemN2S2s? log(N/O) gradient from single linear fit (for N2S2) (2)(1)kpc**-1arith.grad;phys.abunddoublenullablee_mN2S2s? Uncertainty in mN2S2skpc**-1stat.errordoublenullablebN2S2s? Central log(N/O) (y-intercept) from single linear fit (for N2S2) (2)phys.abunddoublenullablee_bN2S2s? Uncertainty in bN2S2sstat.errordoublenullablenN2S2sNumber of data points in the fit (N2S2)meta.numberintrN2S2s? Correlation coefficient (single linear fit, for N2S2)stat.correlationdoublenullablechi2N2S2s? Reduced chi-square parameter (single linear fit, for N2S2)stat.fit.chi2doublenullablesigmaN2S2s? Standard deviation of the residuals (single linear fit, for N2S2)stat.stdevdoublenullablemN2S2.in? Inner log(N/O) gradient from double linear (N2S2) (3)kpc**-1arith.grad;phys.abunddoublenullablee_mN2S2.in? Uncertainty in mN2S2.inkpc**-1stat.errordoublenullablebN2S2.in? y-intercept of inner fit to log(N/O) radial profile (N2S2) (3)phys.abunddoublenullablee_bN2S2.in? Uncertainty in bN2S2.instat.errordoublenullablemN2S2.ou? Outer log(N/O) gradient from double linear fit (N2S2) (3)kpc**-1arith.grad;phys.abunddoublenullablee_mN2S2.ou? Uncertainty in mN2S2.oukpc**-1stat.errordoublenullablebN2S2.ou? y-intercept of outer fit to log(N/O) radial profile (N2S2) (3)phys.abunddoublenullablee_bN2S2.ou? Uncertainty in bN2S2.oustat.errordoublenullablerN2S2br? Break radius in kiloparsecs (N2S2 radial profile)kpcstat.correlationfloatnullablee_rN2S2br? Uncertainty in rN2S2brkpcstat.errorfloatnullablechi2N2S2b? Reduced chi-square parameter (double linear fit, N2S2)stat.fit.chi2doublenullablesigmaN2S2b? Standard deviation of the residuals (double linear fit, N2S2)stat.stdevdoublenullablemRs? log(N/O) gradient from single linear fit (R calibration) (2)(1)kpc**-1arith.grad;phys.abunddoublenullablee_mRs? Uncertainty in mRskpc**-1stat.errordoublenullablebRs? Central log(N/O) (y-intercept) from single linear fit (R calibration) (2)phys.abunddoublenullablee_bRs? Uncertainty in bRsstat.errordoublenullablenRsNumber of data points in the fit (R calibration)meta.numberintrRs? Correlation coefficient (single linear fit, R calibration)stat.correlationdoublenullablechi2Rs? Reduced chi-square parameter (single linear fit, R calibration)stat.fit.chi2doublenullablesigmaRs? Standard deviation of the residuals (single linear fit, R calibration)stat.stdevdoublenullablemR.in? Inner log(N/O) gradient from double linear fit (R calibration) (3)kpc**-1arith.grad;phys.abunddoublenullablee_mR.in? Uncertainty in mR.inkpc**-1stat.errordoublenullablebR.in? y-intercept of inner fit to log(N/O) radial profile (R calibration) (3)phys.abunddoublenullablee_bR.in? Uncertainty in bR.instat.errordoublenullablemR.ou? Outer log(N/O) gradient from double linear fit (R calibration) (3)kpc**-1arith.grad;phys.abunddoublenullablee_mR.ou? Uncertainty in mR.oukpc**-1stat.errordoublenullablebR.ou? y-intercept of outer fit to log(N/O) radial profile (R calibration) (3)phys.abunddoublenullablee_bR.ou? Uncertainty in bR.oustat.errordoublenullablerRbr? Break radius in kiloparsecs (R calibration radial profile)kpcstat.correlationfloatnullablee_rRbr? Uncertainty in rRbrkpcstat.errorfloatnullablechi2Rb? Reduced chi-square parameter (double linear fit, R calibration)stat.fit.chi2doublenullablesigmaRb? Standard deviation of the residuals (double linear fit, R calibration)stat.stdevdoublenullablemds? log(N/O) gradient from single linear fit (direct method) (2)(1)kpc**-1arith.grad;phys.abunddoublenullablee_mds? Uncertainty in mdskpc**-1stat.errordoublenullablebds? Central log(N/O) (y-intercept) from single linear fit (direct method) (2)phys.abunddoublenullablee_bds? Uncertainty in bdsstat.errordoublenullablendsNumber of data points in the fit (direct method)meta.numberintrds? Correlation coefficient (single linear fit, direct method)stat.correlationdoublenullablechi2ds? Reduced chi-square parameter (single linear fit, direct method)stat.fit.chi2doublenullablesigmads? Standard deviation of the residuals (single linear fit, direct method)stat.stdevdoublenullablemd.in? Inner log(N/O) gradient from double linear fit (direct method) (3)kpc**-1arith.grad;phys.abunddoublenullablee_md.in? Uncertainty in mTe-based.inkpc**-1stat.errordoublenullablebd.in? y-intercept of inner fit to log(N/O) radial profile (direct method) (3)phys.abunddoublenullablee_bd.in? Uncertainty in bd.instat.errordoublenullablemd.ou? Outer log(N/O) gradient from double linear fit (direct method) (3)kpc**-1arith.grad;phys.abunddoublenullablee_md.ou? Uncertainty in md.oukpc**-1stat.errordoublenullablebd.ou? y-intercept of outer fit to log(N/O) radial profile (direct method) (3)phys.abunddoublenullablee_bd.ou? Uncertainty in bd.oustat.errordoublenullablerd.br? Break radius in kiloparsecs (direct method radial profile)kpcstat.correlationfloatnullablee_rd.br? Uncertainty in rd.brkpcstat.errorfloatnullablechi2db? Reduced chi-square parameter (double linear fit, direct method)stat.fit.chi2doublenullablesigmadb? Standard deviation of the residuals (double linear fit, direct method)stat.stdevdoublenullablediscardedReference for data of a given author excluded from the fits for this galaxymeta.bibcharJ/MNRAS/500/2359/logoh_rBest-fitting parameters for the radial 12+log(O/H) profile in the galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy namemeta.id;meta.maincharr25Galaxy radius at the 25Bmag/arcsec2 isophote (from RC3, de Vaucouleurs et al., 1991, Cat. VII/155)kpcstat.correlationfloatreGalaxy disk effective radiuskpcstat.correlationfloatmHCMs? Metallicity gradient from single linear fit (for HCM) (2)(1)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mHCMs? Uncertainty in mHCMskpc**-1stat.errordoublenullablebHCMs? Central 12+log(O/H) (y-intercept) from single linear fit (for HCM) (2)phys.abundfloatnullablee_bHCMs? Uncertainty in bHCMsstat.errorfloatnullablenHCMsNumber of data points in the fit (HCM)meta.numberintrHCMs? Correlation coefficient (single linear fit, for HCM)stat.correlationfloatnullablechi2HCMs? Reduced chi-square parameter (single linear fit, for HCM)stat.fit.chi2floatnullablesigmaHCMs? Standard deviation of the residuals (single linear fit, for HCM)stat.stdevfloatnullablemHCM.in? Inner metallicity gradient from double linear fit (HCM) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mHCM.in? Uncertainty in mHCM.inkpc**-1stat.errordoublenullablebHCM.in? y-intercept of the inner fit to the 12+log(O/H) radial profile (HCM) (3)phys.abunddoublenullablee_bHCM.in? Uncertainty in bHCM.instat.errordoublenullablemHCM.ou? Outer metallicity gradient from double linear fit (HCM) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mHCM.ou? Uncertainty in mHCM.oukpc**-1stat.errordoublenullablebHCM.ou? y-intercept of the outer fit to the 12+log(O/H) radial profile (HCM) (3)phys.abunddoublenullablee_bHCM.ou? Uncertainty in bHCM.oustat.errordoublenullablerHCMbr? Break radius in kiloparsecs (HCM radial profile)kpcstat.correlationfloatnullablee_rHCMbr? Uncertainty in rHCMbrkpcstat.errorfloatnullablechi2HCMb? Reduced chi-square parameter (double linear fit, HCM)stat.fit.chi2doublenullablesigmaHCMb? Standard deviation of the residuals (double linear fit, HCM)stat.stdevdoublenullablemN2O2s? Metallicity gradient from single linear fit (for N2O2) (2)(1)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mN2O2s? Uncertainty in mN2O2skpc**-1stat.errordoublenullablebN2O2s? Central 12+log(O/H) (y-intercept) from single linear fit (for N2O2) (2)phys.abunddoublenullablee_bN2O2s? Uncertainty in bN2O2sstat.errordoublenullablenN2O2sNumber of data points in the fit (N2O2)meta.numberintrN2O2s? Correlation coefficient (single linear fit, for N2O2)stat.correlationdoublenullablechi2N2O2s? Reduced chi-square parameter (single linear fit, for N2O2)stat.fit.chi2doublenullablesigmaN2O2s? Standard deviation of the residuals (single linear fit, for N2O2)stat.stdevdoublenullablemN2O2in? Inner metallicity gradient from double linear fit (N2O2) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mN2O2in? Uncertainty in mN2O2.inkpc**-1stat.errordoublenullablebN2O2in? y-intercept of the inner fit to the 12+log(O/H) radial profile (N2O2) (3)phys.abunddoublenullablee_bN2O2in? Uncertainty in bN2O2.instat.errordoublenullablemN2O2ou? Outer metallicity gradient from double linear fit (N2O2) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mN2O2ou? Uncertainty in mN2O2.oukpc**-1stat.errordoublenullablebN2O2ou? y-intercept of the outer fit to the 12+log(O/H) radial profile (N2O2) (3)phys.abunddoublenullablee_bN2O2ou? Uncertainty in bN2O2.oustat.errordoublenullablerN2O2br? Break radius in kiloparsecs (N2O2 radial profile)kpcstat.correlationfloatnullablee_rN2O2br? Uncertainty in rN2O2brkpcstat.errorfloatnullablechi2N2O2b? Reduced chi-square parameter (double linear fit, N2O2)stat.fit.chi2doublenullablesigmaN2O2b? Standard deviation of the residuals (double linear fit, N2O2)stat.stdevdoublenullablemR23s? Metallicity gradient from single linear fit (for R23) (2)(1)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mR23s? Uncertainty in mR23skpc**-1stat.errordoublenullablebR23s? Central 12+log(O/H) (y-intercept) from single linear fit (for R23) (2)phys.abunddoublenullablee_bR23s? Uncertainty in bR23sstat.errordoublenullablenR23sNumber of data points in the fit (R23)meta.numberintrR23s? Correlation coefficient (single linear fit, for R23)stat.correlationdoublenullablechi2R23s? Reduced chi-square parameter (single linear fit, for R23)stat.fit.chi2doublenullablesigmaR23s? Standard deviation of the residuals (single linear fit, for R23)stat.stdevdoublenullablemR23.in? Inner metallicity gradient from double linear fit (R23) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mR23.in? Uncertainty in mR23.inkpc**-1stat.errordoublenullablebR23.in? y-intercept of the inner fit to the 12+log(O/H) radial profile (R23) (3)phys.abunddoublenullablee_bR23.in? Uncertainty in bR23.instat.errordoublenullablemR23.ou? Outer metallicity gradient from double linear fit (R23) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mR23.ou? Uncertainty in mR23.oukpc**-1stat.errordoublenullablebR23.ou? y-intercept of the outer fit to the 12+log(O/H) radial profile (R23) (3)phys.abunddoublenullablee_bR23.ou? Uncertainty in bR23.oustat.errordoublenullablerR23br? Break radius in kiloparsecs (R23 radial profile)kpcstat.correlationfloatnullablee_rR23br? Uncertainty in rR23brkpcstat.errorfloatnullablechi2R23b? Reduced chi-square parameter (double linear fit, R23)stat.fit.chi2doublenullablesigmaR23b? Standard deviation of the residuals (double linear fit, R23)stat.stdevdoublenullablemN2s? Metallicity gradient from single linear fit (for N2) (2)(1)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mN2s? Uncertainty in mN2skpc**-1stat.errordoublenullablebN2s? Central 12+log(O/H) (y-intercept) from single linear fit (for N2) (2)phys.abunddoublenullablee_bN2s? Uncertainty in bN2sstat.errordoublenullablenN2sNumber of data points in the fit (N2)meta.numberintrN2s? Correlation coefficient (single linear fit, for N2)stat.correlationdoublenullablechi2N2s? Reduced chi-square parameter (single linear fit, for N2)stat.fit.chi2doublenullablesigmaN2s? Standard deviation of the residuals (single linear fit, for N2)stat.stdevdoublenullablemN2.in? Inner metallicity gradient from double linear fit (N2) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mN2.in? Uncertainty in mN2.inkpc**-1stat.errordoublenullablebN2.in? y-intercept of the inner fit to the 12+log(O/H) radial profile (N2) (3)phys.abunddoublenullablee_bN2.in? Uncertainty in bN2.instat.errordoublenullablemN2.ou? Outer metallicity gradient from double linear fit (N2) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mN2.ou? Uncertainty in mN2.oukpc**-1stat.errordoublenullablebN2.ou? y-intercept of the outer fit to the 12+log(O/H) radial profile (N2) (3)phys.abunddoublenullablee_bN2.ou? Uncertainty in bN2.oustat.errordoublenullablerN2br? Break radius in kiloparsecs (N2 radial profile)kpcstat.correlationfloatnullablee_rN2br? Uncertainty in rN2brkpcstat.errorfloatnullablechi2N2b? Reduced chi-square parameter (double linear fit, N2)stat.fit.chi2doublenullablesigmaN2b? Standard deviation of the residuals (double linear fit, N2)stat.stdevdoublenullablemO3N2s? Metallicity gradient from single linear fit (for O3N2) (2)(1)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mO3N2s? Uncertainty in mO3N2skpc**-1stat.errordoublenullablebO3N2s? Central 12+log(O/H) (y-intercept) from single linear fit (for O3N2) (2)phys.abunddoublenullablee_bO3N2s? Uncertainty in bO3N2sstat.errordoublenullablenO3N2sNumber of data points in the fit (O3N2)meta.numberintrO3N2s? Correlation coefficient (single linear fit, for O3N2)stat.correlationdoublenullablechi2O3N2s? Reduced chi-square parameter (single linear fit, for O3N2)stat.fit.chi2doublenullablesigmaO3N2s? Standard deviation of the residuals (single linear fit, for O3N2)stat.stdevdoublenullablemO3N2.in? Inner metallicity gradient from double linear fit (O3N2) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mO3N2.in? Uncertainty in mO3N2.inkpc**-1stat.errordoublenullablebO3N2.in? y-intercept of the inner fit to the 12+log(O/H) radial profile (O3N2) (3)phys.abunddoublenullablee_bO3N2.in? Uncertainty in bO3N2.instat.errordoublenullablemO3N2.ou? Outer metallicity gradient from double linear fit (O3N2) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mO3N2.ou? Uncertainty in mO3N2.oukpc**-1stat.errordoublenullablebO3N2.ou? y-intercept of the outer fit to the 12+log(O/H) radial profile (O3N2) (3)phys.abunddoublenullablee_bO3N2.ou? Uncertainty in bO3N2.oustat.errordoublenullablerO3N2br? Break radius in kiloparsecs (O3N2 radial profile)kpcstat.correlationfloatnullablee_rO3N2br? Uncertainty in rO3N2brkpcstat.errorfloatnullablechi2O3N2b? Reduced chi-square parameter (double linear fit, O3N2)stat.fit.chi2doublenullablesigmaO3N2b? Standard deviation of the residuals (double linear fit, O3N2)stat.stdevdoublenullablemO3N2M13s? Metallicity gradient from single linear fit (for O3N2_M13) (2)(1)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mO3N2M13s? Uncertainty in mO3N2_M13skpc**-1stat.errordoublenullablebO3N2M13s? Central 12+log(O/H) (y-intercept) from single linear fit (for O3N2_M13) (2)phys.abunddoublenullablee_bO3N2M13s? Uncertainty in bO3N2_M13sstat.errordoublenullablenO3N2M13sNumber of data points in the fit (O3N2_M13)meta.numberintrO3N2M13s? Correlation coefficient (single linear fit, for O3N2_M13)stat.correlationdoublenullablechi2O3N2M13s? O3N2_M13 reduced chi-square parameter (single linear fit, for O3N2_M13)stat.fit.chi2doublenullablesigmaO3N2M13s? Standard deviation of the residuals (single linear fit, for O3N2_M13)stat.stdevdoublenullablemO3N2_M13.in? Inner metallicity gradient from double linear fit (O3N2_M13) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mO3N2_M13.in? Uncertainty in mO3N2_M13.inkpc**-1stat.errordoublenullablebO3N2_M13.in? y-intercept of the inner fit to the 12+log(O/H) radial profile (O3N2_M13) (3)phys.abunddoublenullablee_bO3N2_M13.in? Uncertainty in bO3N2_M13.instat.errordoublenullablemO3N2_M13.ou? Outer metallicity gradient from double linear fit (O3N2_M13) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mO3N2_M13.ou? Uncertainty in mO3N2_M13.oukpc**-1stat.errordoublenullablebO3N2_M13.ou? y-intercept of the outer fit to the 12+log(O/H) radial profile (O3N2_M13) (3)phys.abunddoublenullablee_bO3N2_M13.ou? Uncertainty in bO3N2_M13.oustat.errordoublenullablerO3N2_M13br? Break radius in kiloparsecs (O3N2_M13 radial profile)kpcstat.correlationfloatnullablee_rO3N2_M13br? Uncertainty in rO3N2_M13brkpcstat.errorfloatnullablechi2O3N2M13b? O3N2_M13 reduced chi-square parameter (double linear fit, O3N2_M13)stat.fit.chi2doublenullablesigmaO3N2M13b? Standard deviation of the residuals (double linear fit, O3N2_M13)stat.stdevdoublenullablemRs? Metallicity gradient from single linear fit (for R calibration) (2)(1)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mRs? Uncertainty in mRskpc**-1stat.errordoublenullablebRs? Central 12+log(O/H) (y-intercept) from single linear fit (for R calibration) (2)phys.abunddoublenullablee_bRs? Uncertainty in bRsstat.errordoublenullablenRsNumber of data points in the fit (R)meta.numberintrRs? Correlation coefficient (single linear fit, for R calibration)stat.correlationdoublenullablechi2Rs? Reduced chi-square parameter (single linear fit, for R calibration)stat.fit.chi2doublenullablesigmaRs? Standard deviation of the residuals (single linear fit, for R calibration)stat.stdevdoublenullablemR.in? Inner metallicity gradient from double linear fit (R calibration) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mR.in? Uncertainty in mR.inkpc**-1stat.errordoublenullablebR.in? y-intercept of the inner fit to the 12+log(O/H) radial profile (R calibration) (3)phys.abunddoublenullablee_bR.in? Uncertainty in bR.instat.errordoublenullablemR.ou? Outer metallicity gradient from double linear fit (R calibration) (3)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mR.ou? Uncertainty in mR.oukpc**-1stat.errordoublenullablebR.ou? y-intercept of the outer fit to the 12+log(O/H) radial profile (R calibration) (3)phys.abunddoublenullablee_bR.ou? Uncertainty in bR.oustat.errordoublenullablerRbr? Break radius in kiloparsecs (R calibration radial profile)kpcstat.correlationfloatnullablee_rRbr? Uncertainty in rRbrkpcstat.errorfloatnullablechi2Rb? Reduced chi-square parameter (double linear fit, R calibration)stat.fit.chi2doublenullablesigmaRb? Standard deviation of the residuals (double linear fit, R calibration)stat.stdevdoublenullablemds? Metallicity gradient from single linear fit (for direct method) (2)(1)kpc**-1arith.grad;phys.abund.Zdoublenullablee_mds? Uncertainty in mdskpc**-1stat.errordoublenullablebds? Central 12+log(O/H) (y-intercept) from single linear fit (for direct method) (2)phys.abunddoublenullablee_bds? Uncertainty in bdsstat.errordoublenullablendsNumber of data points in the fit (direct method)meta.numberintrds? Correlation coefficient (single linear fit, for direct method)stat.correlationdoublenullablechi2ds? Reduced chi-square parameter (single linear fit, for direct method)stat.fit.chi2doublenullablesigmads? Standard deviation of the residuals (single linear fit, for direct method)stat.stdevdoublenullablemd.in? Inner metallicity gradient from double linear fit (direct method) (3)kpc**-1arith.grad;phys.abund.Zfloatnullablee_md.in? Uncertainty in md.inkpc**-1stat.errorfloatnullablebd.in? y-intercept of the inner fit to the 12+log(O/H) radial profile (direct method) (3)phys.abundfloatnullablee_bd.in? Uncertainty in bd.instat.errorfloatnullablemd.ou? Outer metallicity gradient from double linear fit (direct method) (3)kpc**-1arith.grad;phys.abund.Zfloatnullablee_md.ou? Uncertainty in md.oukpc**-1stat.errorfloatnullablebd.ou? y-intercept of the outer fit to the 12+log(O/H) radial profile (direct method) (3)phys.abundfloatnullablee_bd.ou? Uncertainty in bd.oustat.errorfloatnullablerd.br? Break radius in kiloparsecs (direct method radial profile)kpcstat.correlationfloatnullablee_rd.br? Uncertainty in rd.brkpcstat.errorfloatnullablechi2db? Reduced chi-square parameter (double linear fit, direct method)stat.fit.chi2floatnullablesigmadb? Standard deviation of the residuals (double linear fit, direct method)stat.stdevfloatnullablediscardedReference for data of a given author excluded from the fits for this galaxymeta.bibcharJ/MNRAS/500/2359/refsReferencesRefReference codemeta.note;meta.maincharprimaryBibCodeBibCodemeta.bib.bibcodecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAutAuthor's namemeta.bib.authorchar