J/MNRAS/498/5885ivo://CDS.VizieR/J/MNRAS/498/5885doi:10.26093/cds/vizier.74985885CDSBarat D.D'Eugenio F.Colless M.Sweet S.M.Groves B.Cortese L.2024-08-21T20:16:05Z2023-11-06T10:03:35ZCDS support team

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

cds-question@unistra.frdwarf-galaxiesredshiftedgalaxy-radiigalaxy-kinematicsstellar-massesvisible-astronomyspectroscopyThe Study of H{alpha} from Dwarf Emissions (SH{alpha}DE) is a high spectral resolution (R=13500) H{alpha} integral field survey of 69 dwarf galaxies with stellar masses 10^6^<M_*_<10^9^M_{sun}_. The survey used FLAMES on the ESO Very Large Telescope. SH{alpha}DE is designed to study the kinematics and stellar populations of dwarf galaxies using consistent methods applied to massive galaxies and at matching level of detail, connecting these mass ranges in an unbiased way. In this paper, we set out the science goals of SH{alpha}DE, describe the sample properties, outline the data reduction, and analysis processes. We investigate the logM_*_-logS_0.5_ mass-kinematics scaling relation, which has previously shown potential for combining galaxies of all morphologies in a single scaling relation. We extend the scaling relation from massive galaxies to dwarf galaxies, demonstrating this relation is linear down to a stellar mass of M_*_~10^8.6^M_{sun}_. Below this limit, the kinematics of galaxies inside one effective radius appears to be dominated by the internal velocity dispersion limit of the H{alpha}-emitting gas, giving a bend in the logM_{*}_-logS_0.5_ relation. Replacing stellar mass with total baryonic mass using gas mass estimate reduces the severity but does not remove the linearity limit of the scaling relation. An extrapolation to estimate the galaxies' dark matter halo masses, yields a logM_h_-logS_0.5_ scaling relation that is free of any bend, has reduced curvature over the whole mass range, and brings galaxies of all masses and morphologies on to the virial relation.2020MNRAS.498.5885Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/498/5885CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)J/MNRAS/446/1567 : SAMI Galaxy Survey: EDR (Allen+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/498/5885https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/498/5885http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/498/5885https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/498/5885https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/498/5885http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/498/5885GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/498/5885/tablea1 (Quantities used in this work for analyses)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/498/5885/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/498/5885/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/498/5885/tablea1?GETtext/xml+votable180.050000true218.7258072-0.34264830.0055555555555555566/8272 8308 8321 8484 8731 8747 16539 16560-16561 17234 17237 17558 17743 18007 18009 18011 18016 18019 18607 18750 18773 18785 18855 18944 19029 19097 19108 19114 19121 19136 25846 25939 25952-25953 25957 26049 26051 26292 26338 26352 26589 27461 27724 27771 27818 27904 27939 27986 30035 30041 30044 31344 31381 31420 31450 31457 31469 31619 31735 46910 49151https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/498/5885?format=asciiOpticaldefaultJ/MNRAS/498/5885/table1Summary of observations: the main samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDSHaDE identifiermeta.id;meta.mainintNameSDSS SpObjID identifiermeta.idfHaH{alpha} flux from SDSS DR12 (Thomas, Maraston & Johansson 2011MNRAS.412.2183T)1e-18W.m**-2.nm**-1.arcsec**-2phot.flux;spect.linefloate_fHaError on fHa1e-18W.m**-2.nm**-1.arcsec**-2stat.errorfloatTexpExposure timestime.duration;obs.exposurechar<AM>Median airmassobs.airMassfloatSeeingMedian airmass-corrected seeingarcsecinstr.obsty.seeing;stat.medianfloatRun[A/B] Visitor Mode run (G1)instr.setupcharJ/MNRAS/498/5885/table2Summary of observations: the control sample, drawn from SAMIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDSHaDE/GAMA identifiermeta.id;meta.mainfHa? H{alpha} flux1e-18W.m**-2.nm**-1.arcsec**-2phot.flux;spect.linefloatnullablee_fHa? Error on fHa1e-18W.m**-2.nm**-1.arcsec**-2stat.errorfloatnullableTexpExposure timestime.duration;obs.exposurechar<AM>Median airmassobs.airMassfloatSeeingMedian airmass-corrected seeingarcsecinstr.obsty.seeing;stat.medianfloatRun[B/C] Mode run (G1)instr.setupcharJ/MNRAS/498/5885/tablea1Quantities used in this work for analysesSimbadNameSimbad column added by the CDSmeta.idcharnullablesigmaVelocity dispersion {sigma} (2)km/sphys.veloc.dispersionfloate_sigmaError on sigmakm/sstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMoreLink to Tables 1 and 2meta.ref.urlcharIDSHaDE/GAMA identifiermeta.id;meta.mainprimaryRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainReCircularized half-light radius (1)arcsecphys.angSizefloatzSpectroscopic redshift from SDSS DR12src.redshiftfloatVrotRotation velocity V_rot_ (2)km/sphys.veloc.rotatfloate_VrotError on Vrotkm/sstat.errorfloatS0.5Kinematic parameter S_0.5_ (3)km/sstat.fit.paramfloate_S0.5Error on S0.5km/sstat.errorfloatlogSFR? Logarithm of the star formation rate from SDSS DR12log(solMass.yr**-1)phys.SFRfloatnullablelogM*Logarithm of the stellar mass (4)log(solMass)phys.massfloatlogMb? Logarithm of the baryonic mass (5)log(solMass)phys.massfloatnullablelogMh? Logarithm of the halo mass (6)log(solMass)phys.massfloatnullable