J/MNRAS/437/1070ivo://CDS.VizieR/J/MNRAS/437/1070doi:10.26093/cds/vizier.74371070CDSGreen A.W.Glazebrook K.McGregor P.J.Damjanov I.Wisnioski E.,Abraham R.G.Colless M.Sharp R.G.Crain R.A.Poole G.B.McCarthy P.J.2024-08-07T20:12:14Z2015-01-09T09:11:01ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsvisible-astronomyh-alpha-photometrygalaxy-classification-systemsDYNAMO is a multiwavelength, spatially resolved survey of local (z~0.1) star-forming galaxies designed to study evolution through comparison with samples at z=~2. Half of the sample has integrated H{alpha luminosities of >10^42^erg/s, the typical lower limit for resolved spectroscopy at z=~2. The sample covers a range in stellar mass (10^9^-10^11^M_{sun_) and star formation rate (0.2-100M_{sun}_/yr). In this first paper of a series, we present integral-field spectroscopy of H{alpha emission for the sample of 67 galaxies. We infer gas fractions in our sample as high as =~0.8, higher than typical for local galaxies. Gas fraction correlates with stellar mass in galaxies with star formation rates below 10M_{sun}_/yr, as found by COLDGASS, but galaxies with higher star formation rates have higher than expected gas fractions. There is only a weak correlation, if any, between gas fraction and gas velocity dispersion. Galaxies in the sample visually classified as disc-like are offset from the local stellar mass Tully-Fisher relation to higher circular velocities, but this offset vanishes when both gas and stars are included in the baryonic Tully-Fisher relation. The mean gas velocity dispersion of the sample is =~50km/s, and V/{sigma} ranges from 2 to 10 for most of the discs, similar to 'turbulent' galaxies at high redshift. Half of our sample show disc-like rotation, while ~20 percent show no signs of rotation. The division between rotating and non-rotating is approximately equal for the sub-samples with either star formation rates >10M_{sun}_/yr, or specific star formation rates typical of the star formation 'main sequence' at z=~2. Across our whole sample, we find good correlation between the dominance of `turbulence' in galaxy discs (as expressed by V/{sigma}) and gas fraction as has been predicted for marginally stable Toomre discs. Comparing our sample with many others at low- and high-redshift reveals a correlation between gas velocity dispersion and star formation rate. These findings suggest the DYNAMO discs are excellent candidates for local galaxies similar to turbulent z=~2 disc galaxies.2014MNRAS.437.1070Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/437/1070CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/267 : The SDSS Photometric Catalog, Release 4 (Adelman-McCarthy+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/437/1070https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/437/1070http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/437/1070https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/437/1070https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/437/1070http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/437/1070GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/437/1070/sample (Basic and star formation properties (table 4) and kinematic properties (table5) of the sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/437/1070/sample?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/437/1070/sample?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/437/1070/sample?GETtext/xml+votable180.050000true60.6770833-6.74658330.005555555555555556Cone search capability for table J/MNRAS/437/1070/table3 (SDSS target information)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/437/1070/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/437/1070/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/437/1070/table3?GETtext/xml+votable180.050000true60.6770833-6.74658330.0055555555555555566/4131 4152 4155 4162 4188 4204 4227 4249 8233 18018 18028 18069 18072 18542-18543 18774 19109 19122 19381 19696 21877 21971-21972 22010 22715 22717-22718 22762 23060 23144 23192 25943 25950 25956 25987 26044 26246 26368 26370-26371 26385 27044 27064 27078 27219 27446 27449 27481 27514 27617 27826 30036 31292 31294 31379 31392 31439 45051 48983 49079 49084 49102 49121https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/437/1070?format=asciiOpticaldefaultJ/MNRAS/437/1070/sampleBasic and star formation properties (table 4) and kinematic properties (table5) of the sampleiInclinationdegsrc.orbital.inclinationintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSelIDSelection ID (G1)meta.id;meta.maincharprimaryNSimbad column added by the CDSmeta.ref.urlintnullablezRedshift (spectroscopic)src.redshiftdoublerMAGAbsolute r-band magnitudemagphys.magAbsfloatM*Stellar mass (1)1e+09solMassphys.massfloatlogLfHaH{alpha} luminosity as measured by the Sloan spectro-photometry from a 3arcsec diameter fibre aperturelog(1e-07W)phys.luminosity;em.line.HalphafloatlogLIHaH{alpha} luminosity as measured by our IFU observations in the masked region (Section 4.1)log(1e-07W)phys.luminosity;em.line.HalphafloatE_logLIHaError on logLIHa (upper value)log(1e-07W)stat.error;stat.maxfloate_logLIHaError on logLIHa (lower value)log(1e-07W)stat.errorfloatSFRB04Star formation rate reported by Brinchmann et al. (2004MNRAS.351.1151B) (2)solMass/yrphys.SFRfloatSFRHaStar formation rate measured from our IFU observations, including a dust correction (Section 5.2)solMass/yrphys.SFRfloatE_SFRHaError on SFRHa (upper value)solMass/yrstat.error;stat.maxfloate_SFRHaError on SFRHa (lower value)solMass/yrstat.errorfloatExtExtinction of H{alpha} due to dustmagphys.absorption;em.line.HalphafloatE_ExtError on Ext (upper value)magstat.error;stat.maxfloate_ExtError on Ext (lower value)magstat.errorfloatMgasGas mass (Section 5.3)1e+09solMassphys.massfloate_Mgas? rms uncertainty on Mgas1e+09solMassstat.errorfloatnullablen_Mgas[i] i for {infinity}. These values are effectively unconstrained because of the inclination correctionmeta.notecharrprRadius from Petrosian r magnitude (r_petro,r_)kpcphys.size.radiusfloatrerExponential disc scale radius (r_exp,r_)kpcphys.size.radius;instr.scalefloatrt? Kinematic scale radiuskpcphys.size.radius;instr.scalefloatnullablee_rt? rms uncertainty on rtkpcstat.errorfloatnullableV2.2Rr? Model velocity at a radius of 2.2 r-band exponential disc scalelengths (3)km/sphys.velocintnullablee_V2.2Rr? rms uncertainty on V2.2Rrkm/sstat.errorintnullablen_V2.2Rr[s] s when Vshear/2 instead on V2.2Rr in V2.2Rr columnmeta.notecharsigmacVelocity dispersion after removing velocity shear larger than the spatial resolution element (4)km/sphys.veloc.dispersionintClassKinematic class (5)src.classchar_RAPosition from SDSS (right ascension part)degpos.eq.ra;meta.main_DEPosition from SDSS (declination part)degpos.eq.dec;meta.mainJ/MNRAS/437/1070/table3SDSS target informationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName, not always as a conventional SDSS namemeta.id;meta.maincharSelIDSelection ID (G1)meta.idcharSpecObjIdSDSS spectroscopic id number (1)meta.idDateObservation datetime.epoch;obsnullableInstInstrumentmeta.id;instrcharTexpTotal exposure time for the night (2)stime.duration;obs.exposureintSeeing? Full width at half-maximum seeing observed on a nearby star as part of the observation sequencearcsecspect.line.widthfloatnullableSDSSConventional SDSS name, as in Cat. II/267 (added by CDS)meta.idcharSloanDisplay the SDSS data for this galaxymeta.ref.urlchar_RAPosition from SDSS name (right ascension part)degpos.eq.ra;meta.main_DEPosition from SDSS name (declination part)degpos.eq.dec;meta.mainJ/MNRAS/437/1070/table2Observing runsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintProgProgrammeta.id;obscharn_Prog[b] b: DD - Director's discretionary timemeta.notecharDateObservation datetime.epoch;obsnullableMoonFraction of moon illuminated at mid-nightmeta.notefloatWeatherWeather commentsmeta.notechar