J/A+A/612/L6ivo://CDS.VizieR/J/A+A/612/L6doi:10.26093/cds/vizier.36129006CDSPosti L.Fraternali F.di Teodoro E. M.Pezzulli G.2018-05-16T07:18:01Z2018-05-04T09:46:30ZCDS support team

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

cds-question@unistra.frgalaxiesstellar-massesIn a {LAMBDA} CDM Universe, the specific stellar angular momentum (j*) and stellar mass (M*) of a galaxy are correlated as a consequence of the scaling existing for dark matter haloes (jh{prop.to}2/3). The shape of this law is crucial to test galaxy formation models, which are currently discrepant especially at the lowest masses, allowing to constrain fundamental parameters, such as, for example, the retained fraction of angular momentum. In this study, we accurately determine the empirical j*-M* relation (Fall relation) for 92 nearby spiral galaxies (from S0 to Irr) selected from the Spitzer Photometry and Accurate Rotation Curves (SPARC) sample in the unprecedented mass range 7<~logM*/M_{sun}_<~11.5. We significantly improve all previous estimates of the Fall relation by determining j* profiles homogeneously for all galaxies, using extended HI rotation curves, and selecting only galaxies for which a robust j* could be measured (converged j*(<R) radial profile). We find the relation to be well described by a single, unbroken power-law j*{alpha}M*^{alpha}^ over the entire mass range, with {alpha}=0.55+/-0.02 and orthogonal intrinsic scatter of 0.17+/-0.01dex. We finally discuss some implications of this fundamental scaling law for galaxy formation models and, in particular, the fact that it excludes models in which discs of all masses retain the same fraction of the halo angular momentum.2018A&A...612L...6Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/612/L6CatalogResearchIsServedByTAP 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/612/L6https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/612/L6http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/612/L6https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/612/L6https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/612/L6http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/612/L6GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/612/L6/table (List of galaxy masses and specific angular momenta)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/612/L6/table?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/612/L6/table?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/612/L6/table?GETtext/xml+votable180.050000true119.254281114.39657110.0055555555555555566/975 1114 1561 2351 2383 2409 3511 3519 4511 4534 4650 5067 5168 5174 5463 5469 5504 5581 5584 5589 5591 5594 5596 5623 5628 5631 5636 5669 5751 5827 5967 5982 7132 7241 7624 7743 7799 7878 7882 7957 9463 10286 10475 10511 10637 10662 10689 10817 10841 10847 10908 10925 10930 10979 10990-10991 11000 11030 11127 11375 11389 11448 11566 11639 12570 13522 15592 16083 16441 16595 17753 19697 20020 20353 20438 24952 26106 27030 28087 28149 28230 28463 28496 28638 32231 33589 33986 35536 35746 36974 38846 40531https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/612/L6?format=asciidefaultJ/A+A/612/L6/tableList of galaxy masses and specific angular momentaSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy name (1)meta.id;meta.maincharTHubble type (1)meta.noteintfD[1/5] Distance method (2)meta.codeintMstarGalaxy's stellar mass (3)solMasssrc.class.starGalaxydoubleMdiscDisc's stellar mass (3)solMassphys.massdoublee_MstarUncertainty on the stellar masses (3)solMassstat.errordoublejstarGalaxy's specific angular momentumkpc.km/sphys.angMomentumdoublejdiscDisc's specific angular momentumkpc.km/sphys.angMomentumdoublee_jstarUncertainty on the specific angular momentakpc.km/sstat.errordoublejdiffRelative difference between last 2 points of jstar profile (4)spect.line.profile;arith.difffloatjgradGradient of jstar profile at last grid point (4)arith.grad;spect.line.profilefloat_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