J/ApJ/765/140ivo://CDS.VizieR/J/ApJ/765/140doi:10.26093/cds/vizier.17650140CDSAndrews B.H.Martini P.2017-06-19T07:57:23Z2014-12-01T10:15:33ZCDS support team

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

cds-question@unistra.frchemical-abundancesgalaxiesspectroscopyinterstellar-mediumThe relation between galaxy stellar mass and gas-phase metallicity is a sensitive diagnostic of the main processes that drive galaxy evolution, namely cosmological gas inflow, metal production in stars, and gas outflow via galactic winds. We employed the direct method to measure the metallicities of ~200000 star-forming galaxies from the Sloan Digital Sky Survey that were stacked in bins of (1) stellar mass and (2) both stellar mass and star formation rate (SFR) to significantly enhance the signal-to-noise ratio of the weak [OIII]{lambda}4363 and [OII]{lambda}{lambda}7320,7330 auroral lines required to apply the direct method. These metallicity measurements span three decades in stellar mass from log(M_*_/M_{sun}_)=7.4-10.5, which allows the direct method mass-metallicity relation to simultaneously capture the high-mass turnover and extend a full decade lower in mass than previous studies that employed more uncertain strong line methods. The direct method mass-metallicity relation rises steeply at low mass (O/H{prop.to}M_*_^1/2^) until it turns over at log(M_*_/M_{sun}_)=8.9 and asymptotes to 12+log(O/H)=8.8 at high mass. The direct method mass-metallicity relation has a steeper slope, a lower turnover mass, and a factor of two to three greater dependence on SFR than strong line mass-metallicity relations. Furthermore, the SFR-dependence appears monotonic with stellar mass, unlike strong line mass-metallicity relations. We also measure the N/O abundance ratio, an important tracer of star formation history, and find the clear signature of primary and secondary nitrogen enrichment. N/O correlates tightly with oxygen abundance, and even more so with stellar mass.2013ApJ...765..140Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/765/140CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)III/232 : STELIB: A library of stellar spectra at R 2000 (Le Borgne+, 2003)J/MNRAS/424/2316 : Abundances in HII regions (Pilyugin+, 2012)J/ApJ/752/148 : {kappa}-distributed electrons & OIII line (Nicholls+, 2012)J/A+A/533/A25 : VLT/X-shooter observations of PHL293B (Izotov+ 2011)J/A+A/529/A149 : HII regions in low-metallicity galaxies (Guseva+, 2011)J/MNRAS/404/1639 : MILES base models + new line index system (Vazdekis+, 2010)J/MNRAS/403/896 : Line intensities of SDSS HII regions (Pilyugin+, 2010)J/ApJS/190/233 : Spectro. and abundances of SINGS galaxies (Moustakas+, 2010)J/ApJ/700/1299 : Gas-phase element depletions in the ISM (Jenkins, 2009)J/ApJ/700/654 : Keck spectro. of extragalactic HII regions (Esteban+ 2009)J/ApJ/695/580 : Oxygen abundance in M83 (Bresolin+, 2009)J/ApJ/695/259 : Massive metal-poor galaxies from SDSS (Peeples+, 2009)J/ApJ/668/853 : UltraStrong Emission Line galaxies spectro. (Kakazu+, 2007)J/MNRAS/374/664 : Stellar atmospheric param. in MILES library (Cenarro+, 2007)J/A+A/462/535 : Low-metallicity HII regions and galaxies (Yin+, 2007)J/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006)J/A+A/448/955 : Abundances of emission galaxies in SDSS-DR3 (Izotov+, 2006)J/A+A/441/981 : HII regions in 5 spiral galaxies (Bresolin+, 2005)J/PASP/117/227 : Properties of 101 galaxies from the NFGS (Kewley+, 2005)J/ApJ/617/240 : Oxygen abundances in the GOODS-N field (Kobulnicky+, 2004)J/ApJ/602/200 : Blue compact galaxies abundances (Izotov+, 2004)J/A+A/421/539 : VLT spectroscopy of Tol 1214-277 + Tol 65 (Izotov+, 2004)J/AJ/121/169 : Imaging and spectroscopy of Tol 1214-277 (Fricke+, 2001)http://miles.iac.es/ : MILES home pagehttp://www.sdss.org/ : SDSS home pagehttp://www.mpa-garching.mpg.de/SDSS/DR7/ : MPA-JHU DR7 release home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/765/140https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/765/140http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/765/140https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/765/140https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/765/140http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/765/140GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/765/140/spectraLine fluxes, electron temperatures and abundances of the stacked spectraF3727? [OII]3727 line flux (1)spect.line.intensity;arith.ratiofloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlogM*0[7/11.4] Lower stellar mass limit of the stacklog(solMass)stat.errorfloatlogM*1[7/11.5] Upper stellar mass limit of the stacklog(solMass)stat.errorfloatlogSFR0[-2/1.5]? Lower SFR limit of the stacklog(solMass.yr**-1)stat.errorfloatnullablelogSFR1[-1.5/2]? Upper SFR limit of the stacklog(solMass.yr**-1)stat.errorfloatnullableNgal[1/14140] Number of galaxies in the stackmeta.numberintlogM*[7/11.5] Median stellar mass of the stacklog(solMass)phys.massfloatlogSFR[-1.8/1.9] Median SFR of the stacklog(solMass.yr**-1)phys.SFRfloate_F3727? Uncertainty on F3727stat.errorfloatnullableF3868? [NeIII]3868 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F3868? Uncertainty on F3868stat.errorfloatnullableF4069? [SII]4069 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F4069? Uncertainty on F4069stat.errorfloatnullableHg? H{gamma} line flux (1)spect.line.intensity;arith.ratiofloatnullablee_Hg? Uncertainty on Hgstat.errorfloatnullableF4363? [OIII]4363 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F4363? Uncertainty on F4363stat.errorfloatnullableF4686? HeII4686 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F4686? Uncertainty on F4686stat.errorfloatnullableF4740? [ArIV]4740 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F4740? Uncertainty on F4740stat.errorfloatnullableF4959? [OIII]4959 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F4959? Uncertainty on F4959stat.errorfloatnullableF5007? [OIII]5007 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F5007? Uncertainty on F5007stat.errorfloatnullableF5755? [NII]5755 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F5755? Uncertainty on F5755stat.errorfloatnullableF6312? [SIII]6312 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F6312? Uncertainty on F6312stat.errorfloatnullableF6548? [NII]6548 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F6548? Uncertainty on F6548stat.errorfloatnullableHa[286]? H{alpha} line flux (1)spect.line.intensity;arith.ratiofloatnullablee_Ha? Uncertainty on Hastat.errorfloatnullableF6583? [NII]6583 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F6583? Uncertainty on F6583stat.errorfloatnullableF6716? [SII]6716 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F6716? Uncertainty on F6716stat.errorfloatnullableF6731? [SII]6731 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F6731? Uncertainty on F6731stat.errorfloatnullableF7135? [ArIII]7135 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F7135? Uncertainty on F7135stat.errorfloatnullableF7320? [OII]7320 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F7320? Uncertainty on F7320stat.errorfloatnullableF7330? [OII]7330 line flux (1)spect.line.intensity;arith.ratiofloatnullablee_F7330? Uncertainty on F7330stat.errordoublenullableTeO3? [OIII] electron temperatureKphys.temperature.electron;phys.electronintnullablee_TeO3? Uncertainty on TeO3Kstat.errorintnullableTeO2? [OII] electron temperatureKphys.temperature.electron;phys.electronintnullablee_TeO2? Uncertainty on TeO2Kstat.errorintnullableTeN2? [NII] electron temperatureKphys.temperature.electron;phys.electronintnullablee_TeN2? Uncertainty on TeN2Kstat.errorintnullableTeS2? [SII] electron temperatureKphys.temperature.electron;phys.electronintnullablee_TeS2? Uncertainty on TeS2Kstat.errorintnullablelogO/H[7.7/9.1]? Oxygen abundance; 12+log(O/H)phys.abundfloatnullablee_logO/H? Uncertainty on logO/Hstat.error;phys.abundfloatnullablelogN/O[-1.6/-0.7]? Nitrogen to Oxygen relative abundancephys.abundfloatnullablee_logN/O? Uncertainty on logN/Ostat.error;phys.abundfloatnullable