J/A+A/649/A39ivo://CDS.VizieR/J/A+A/649/A39doi:10.26093/cds/vizier.36490039CDSLutz K.A.Saintonge A.Catinella B.Cortese L.Eisenhauer F.Kramer C.,Moran S.M.Tacconi L.J.Vollmer B.Wang J.2023-01-13T06:58:49Z2021-05-07T07:34:29ZCDS support team

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

cds-question@unistra.frgalaxiesh-i-line-emissionmolecular-physicsspectroscopyThe xGASS and xCOLD GASS surveys have measured the atomic (HI) and molecular gas (H_2_) content of a large and representative sample of nearby galaxies (redshift range of 0.01<z<0.05). We present optical longslit spectra for a subset of the xGASS and xCOLD GASS galaxies to investigate the correlation between radial metallicity profiles and cold gas content. In addition to data from Moran et al. (2012ApJ...745...66M), this paper presents new optical spectra for 27 galaxies in the stellar mass range of 9.0<=logMstar[Msun]<=10.0. The longslit spectra were taken along the major axis of the galaxies, allowing us to obtain radial profiles of the gas-phase oxygen abundance (12+log(O/H)). The slope of a linear fit to these radial profiles is defined as the metallicity gradient. We investigated correlations between these gradients and global galaxy properties, such as star formation activity and gas content. In addition, we examined the correlation of local metallicity measurements and the global HI mass fraction. We obtained two main results: (i) the local metallicity is correlated with the global HI mass fraction, which is in good agreement with previous results. A simple toy model suggests that this correlation points towards a 'local gas regulator model'; (ii) the primary driver of metallicity gradients appears to be stellar mass surface density (as a proxy for morphology). This work comprises one of the few systematic observational studies of the influence of the cold gas on the chemical evolution of star-forming galaxies, as considered via metallicity gradients and local measurements of the gas-phase oxygen abundance. Our results suggest that local density and local HI mass fraction are drivers of chemical evolution and the gas-phase metallicity.2021A&A...649A..39Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/649/A39CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/233/22 : xCOLD GASS catalog (Saintonge+, 2017)J/MNRAS/476/875 : xGASS catalog (Catinella+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/649/A39https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/649/A39http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/649/A39https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/649/A39https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/649/A39http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/649/A39GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/649/A39/table (List of studied sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/649/A39/table?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/649/A39/table?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/649/A39/table?GETtext/xml+votable180.050000true358.238815.712460.005555555555555556Cone search capability for table J/A+A/649/A39/list (List of fits spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/649/A39/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/649/A39/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/649/A39/list?GETtext/xml+votable180.050000true20.288915.694770.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/649/A396/526-527 545 548-550 555 4107 4111 4156 4171 4188 4203 4236 4410 4650 4653 4684 4697 4708 4799 4952 6243 8211 8225 8254 8264 8266 8282-8283 8291 8300 8449 8509 8670 8723 8736 8748 10538 17833 18007 18009 18075 18096-18097 18387 18402-18403 18409-18410 18413 18794 18865 19319 19382 19411 19417 19426 19430 19678 19684 19686 19693 19698 19704 19734 19742 19981 19983 19994 19998 20002-20003 20006 20017 22364 22388 26059-26060 26064 26070 26326 26432 26437 26520 26971 27127 27343 27422-27423 27457 27510 27522 27590 27594 27616 27749 27774 27928 28178 28189 31429 31436https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/649/A39?format=asciiRadiodefaultJ/A+A/649/A39/tableList of studied sourcesa/bAxis ratio (3)phys.angSize;arith.ratiofloatSpindicates spectrameta.ref.urlcharZgrad.16-3? 16th percentile of metallicity gradient PDF from full radial metallicity profile, radius normalised by reff (r band) (4)stat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGASSGASS identifier (1)meta.id;meta.mainintprimarySDSSSDSS identifier (1)meta.idcharRAJ2000Rigth ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainlogMstarStellar mass (2)log(solMass)phys.massfloatlogmustarStellar mass surface density (2)log(solMass.pc**-2)phys.densityfloatNUV-r? GALEX NUV - SDSS r colour (2)magphot.color;em.UV;em.optfloatnullablelogMHI? HI Mass (2)log(solMass)phys.massfloatnullablelogMH2? H2 Mass (2)log(solMass)phys.massfloatnullablecConcentration index (3)meta.code;spect.indexfloatr9090 per cent Petrosian radius, r band (3)arcsecphys.angSize;srcfloatr25? 25mag/arcsec^2^ isophotal radius, r band (3)arcsecphys.angSizefloatnullablereff? Effective radius, r band (3)arcsecphys.angSizefloatnullablelogGFHI? HI to stellar mass fraction (C18)phys.mass;arith.ratiofloatnullablelogGFH2? H2 to stellar mass fraction (C17)phys.massfloatnullablelogSFR? Star formation rate (2)log(solMass.yr**-1)phys.SFRfloatnullablelogsSFR? Specific star formation rate (2)log(yr**-1)phys.SFRfloatnullabledefHI? HI deficiency factorstat.fit.paramfloatnullabledefH2? H2 deficiency factorstat.fit.paramfloatnullableZgrad.LS-1? least-squares metallicity gradient from full radial metallicity profile, radius normalised by r90 (r band) (4)arith.grad;phys.abundfloatnullableZgrad.ML-1? maximum likelihood metallicity gradient from full radial metallicity profile, radius normalised by r90 (r band) (4)arith.grad;phys.abundfloatnullableZgrad.16-1? 16th percentile of metallicity gradient PDF from full radial metallicity profile, radius normalised by r90 (r band) (4)stat.errorfloatnullableZgrad.84-1? 84th percentile of metallicity gradient PDF from full radial metallicity profile, radius normalised by r90 (r band) (4)stat.errorfloatnullableZgrad.LS-2? least-squares metallicity gradient from full radial metallicity profile, radius normalised by r25 (r band) (4)arith.grad;phys.abundfloatnullableZgrad.ML-2? maximum likelihood metallicity gradient from full radial metallicity profile, radius normalised by r25 (r band) (4)arith.grad;phys.abundfloatnullableZgrad.16-2? 16th percentile of metallicity gradient PDF from full radial metallicity profile, radius normalised by r25 (r band) (4)stat.errorfloatnullableZgrad.84-2? 84th percentile of metallicity gradient PDF from full radial metallicity profile, radius normalised by r25 (r band) (4)stat.errorfloatnullableZgrad.LS-3? least-squares metallicity gradient from full radial metallicity profile, radius normalised by reff (r band) (4)arith.grad;phys.abundfloatnullableZgrad.ML-3? maximum likelihood metallicity gradient from full radial metallicity profile, radius normalised by reff (r band) (4)arith.grad;phys.abundfloatnullableZgrad.84-3? 84th percentile of metallicity gradient PDF from full radial metallicity profile, radius normalised by reff (r band) (4)stat.errorfloatnullableZgrad.LS-4? least-squares metallicity gradient from full radial metallicity profile, radius in kpc (4)arith.grad;phys.abundfloatnullableZgrad.ML-4? maximum likelihood metallicity gradient from full radial metallicity profile, radius in kpc (4)arith.grad;phys.abundfloatnullableZgrad.16-4? 16th percentile of metallicity gradient PDF from full radial metallicity profile, radius in kpc (4)stat.errorfloatnullableZgrad.84-4? 84th percentile of metallicity gradient PDF from full radial metallicity profile, radius in kpc (4)stat.errorfloatnullableZgrad.LS-5? least-squares metallicity gradient from radial metallicity profile without central 0.5reff, radius normalised by r90 (r band) (4)arith.grad;phys.abundfloatnullableZgrad.ML-5? maximum likelihood metallicity gradient from radial metallicity profile without central 0.5reff, radius normalised by r90 (r band) (4)arith.grad;phys.abundfloatnullableZgrad.16-5? 16th percentile of metallicity gradient PDF from radial metallicity profile without central 0.5reff, radius normalised by r90 (r band) (4)stat.errorfloatnullableZgrad.84-5? 84th percentile of metallicity gradient PDF from radial metallicity profile without central 0.5reff, radius normalised by r90 (r band) (4)stat.errorfloatnullableZgrad.LS-6? least-squares metallicity gradient from radial metallicity profile without central 0.5reff, radius normalised by r25 (r band) (4)arith.grad;phys.abundfloatnullableZgrad.ML-6? maximum likelihood metallicity gradient from radial metallicity profile without central 0.5reff, radius normalised by r25 (r band) (4)arith.grad;phys.abundfloatnullableZgrad.16-6? 16th percentile of metallicity gradient PDF from radial metallicity profile without central 0.5reff, radius normalised by r25 (r band) (4)stat.errorfloatnullableZgrad.84-6? 84th percentile of metallicity gradient PDF from radial metallicity profile without central 0.5reff, radius normalised by r25 (r band) (4)stat.errorfloatnullableZgrad.LS-7? least-squares metallicity gradient from radial metallicity profile without central 0.5reff, radius normalised by reff (r band) (4)arith.grad;phys.abundfloatnullableZgrad.ML-7? maximum likelihood metallicity gradient from radial metallicity profile without central 0.5reff, radius normalised by reff (r band) (4)arith.grad;phys.abundfloatnullableZgrad.16-7? 16th percentile of metallicity gradient PDF from radial metallicity profile without central 0.5reff, radius normalised by reff (r band) (4)stat.errorfloatnullableZgrad.84-7? 84th percentile of metallicity gradient PDF from radial metallicity profile without central 0.5reff, radius normalised by reff (r band) (4)stat.errorfloatnullableZgrad.LS-8? least-squares metallicity gradient from radial metallicity profile without central 0.5reff, radius in kpc (4)arith.grad;phys.abundfloatnullableZgrad.ML-8? maximum likelihood metallicity gradient from radial metallicity profile without central 0.5reff, radius in kpc (4)arith.grad;phys.abundfloatnullableZgrad.16-8? 16th percentile of metallicity gradient PDF from radial metallicity profile without central 0.5reff, radius in kpc (4)stat.errorfloatnullableZgrad.84-8? 84th percentile of metallicity gradient PDF from radial metallicity profile without central 0.5reff, radius in kpc (4)stat.errorfloatnullableJ/A+A/649/A39/listList of fits spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGASSGASS identification numbermeta.id;meta.mainintSDSSSDSS designation (JHHMMSS.ss+DDMMSS.s)meta.idcharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintObs.dateObservation datestime.epoch;obsnullablesizeSize of FITS fileKibytephys.size;meta.fitsintspShow the sepctrummeta.ref.urlcharFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar