J/A+A/640/A70ivo://CDS.VizieR/J/A+A/640/A70doi:10.26093/cds/vizier.36400070CDSMarasco A.Posti L.Oman K.Famaey B.Cresci G.Fraternali F.2020-11-02T07:39:03Z2020-08-13T07:47:05ZCDS support team

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

cds-question@unistra.frastronomical-modelsgalaxiescatalogsWe investigate the disc-halo connection in massive (M*>5x10^10^M_{sun}_) disc galaxies from the cosmological hydrodynamical simulations EAGLE and IllustrisTNG, and compare it with that inferred from the study of HI rotation curves in nearby massive spirals from the Spitzer Photometry and Accurate Rotation Curves (SPARC) dataset. We find that discrepancies between the simulated and observed discs arise both on global and on local scales. Globally, the simulated discs inhabit halos that are a factor 4 (in EAGLE) and 2 (in IllustrisTNG) more massive than those derived from the rotation curve analysis of the observed dataset. We also use synthetic rotation curves of the simulated discs to demonstrate that the recovery of the halo masses from rotation curves are not systematically biased. We find that the simulations predict dark-matter dominated systems with stellar-to-total enclosed mass ratios that are a factor of 1.5-2 smaller than real galaxies at all radii. This is an alternative manifestation of the `failed feedback problem', since it indicates that simulated halos hosting massive discs have been too inefficient at converting their baryons into stars, possibly due to an overly efficient stellar and/or AGN feedback implementation.2020A&A...640A..70Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/640/A70CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/152/157 : Mass models for 175 disk galaxies with SPARC (Lelli+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/640/A70https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/640/A70http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/640/A70https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/640/A70https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/640/A70http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/640/A70GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/640/A70/tablea2 (Data for nearby spirals from the SPARC sample from Lelli et al., 2016, Cat. J/AJ/152/157 and Posti et al. (2019A&A...626A..56P))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/640/A70/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/640/A70/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/640/A70/tablea2?GETtext/xml+votable180.050000true339.267091734.41591940.0055555555555555566/975 1114 1561 2351 3511 5631 5669 5827 7241 7957 9463 10511 10637 11375 11389 13489 13522 16083 20020 32231 40531https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/640/A70?format=asciidefaultJ/A+A/640/A70/tablea1eData for simulated discs in EAGLE (Ref-L0100N1504)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDGalaxy ID from the catalogue of McAlpine et al., 2016, Astronomy and Computing, 15, 72meta.idintlogMslog10 of stellar mass (1)log(solMass)phys.massfloatlogMhlog10 of halo masslog(solMass)phys.massfloatvflatCircular speed at which the rotation curve flattenskm/sphys.velocfloatReffHalf-mass radiuskpcphys.size.radiusfloatRsRatio between the median azimuthal speed and the vertical velocity dispersion for the stellar componentphys.veloc.dispersion;stat.medianfloatFsFraction of non counter-rotating stars (1)meta.numberfloatJ/A+A/640/A70/tablea1tData for simulated discs in IllustrisTNG (TNG100-1)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDGalaxy ID from the catalogue of Nelson et al., 2019, Astronomy and Computing, 6, 2meta.idintlogMslog10 of stellar mass (1)log(solMass)phys.massfloatlogMhlog10 of halo masslog(solMass)phys.massfloatvflatCircular speed at which the rotation curve flattenskm/sphys.velocfloatReffHalf-mass radiuskpcphys.size.radiusfloatRsRatio between the median azimuthal speed and the vertical velocity dispersion for the stellar componentphys.veloc.dispersion;stat.medianfloatFsFraction of non counter-rotating stars (1)meta.numberfloatJ/A+A/640/A70/tablea2Data for nearby spirals from the SPARC sample from Lelli et al., 2016, Cat. J/AJ/152/157 and Posti et al. (2019A&A...626A..56P)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy namemeta.id;meta.maincharlogMs50log10 of stellar mass, 50th percentile of the posterior prob. distributionlog(solMass)phys.massfloatlogMs1616th percentile of the posteriorlog(solMass)phys.massfloatlogMs8484th percentile of the posteriorlog(solMass)phys.massfloatlogMh50log10 of halo mass, 50th percentile of the posterior prob. distributionlog(solMass)phys.massfloatlogMh1616th percentile of the posteriorlog(solMass)phys.massfloatlogMh8484th percentile of the posteriorlog(solMass)phys.massfloatvflatHI rotational velocity taken at the flat part of the rotation curve (1)km/sphys.veloc.rotatfloate_vflatUncertainty on vflatkm/sstat.errorfloatReffEffective radius (from 3.6um SPITZER data)kpcphys.size.radiusfloate_ReffUncertainty on Reffkpcstat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main