J/MNRAS/469/2539ivo://CDS.VizieR/J/MNRAS/469/2539doi:10.26093/cds/vizier.74692539CDSKalinova V.Colombo D.Rosolowsky E.Kannan R.Galbany L.,Garcia-Benito R.Gonzalez Delgado R.Sanchez S.F.Ruiz-Lara T.,Mendez-Abreu J.Catalan-Torrecilla C.Sanchez-Menguiano L.,de Lorenzo-Caceres A.Costantin L.Florido E.Kodaira K.Marino R.A.,Lasker R.Bland-Hawthorn J.2024-08-17T20:19:13Z2020-06-02T15:52:49ZCDS support team

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

cds-question@unistra.frgalaxiesgalaxy-classification-systemsWe present a galaxy classification system for 238 (E1-Sdm) CALIFA (Calar Alto Legacy Integral Field Area) galaxies based on the shapes and amplitudes of their circular velocity curves (CVCs). We infer the CVCs from the de-projected surface brightness of the galaxies, after scaling by a constant mass-to-light ratio based on stellar dynamics - solving axisymmetric Jeans equations via fitting the second velocity moment V_rms_=sqrt{V^2^+{sigma}^2^} of the stellar kinematics. We use principal component analysis (PCA) applied to the CVC shapes to find characteristic features and use a k-means classifier to separate circular curves into classes. This objective classification method identifies four different classes, which we name slow-rising (SR), flat (FL), round-peaked (RP) and sharp-peaked (SP) circular curves. SR are typical for low-mass, late-type (Sb-Sdm), young, faint, metal-poor and disc-dominated galaxies. SP are typical for high-mass, early-type (E1-E7), old, bright, metal-rich and bulge-dominated galaxies. FL and RP appear presented by galaxies with intermediate mass, age, luminosity, metallicity, bulge-to-disc ratio and morphologies (E4-S0a, Sa-Sbc). The discrepancy mass factor, f_d_=1-M_*_/M_dyn_, have the largest value for SR and SP classes (~74 per cent and ~71 per cent, respectively) in contrast to the FL and RP classes (with ~59 per cent and ~61 per cent, respectively). Circular curve classification presents an alternative to typical morphological classification and appears more tightly linked to galaxy evolution.2017MNRAS.469.2539Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/469/2539CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/469/2539https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/469/2539http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/469/2539https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/469/2539https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/469/2539http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/469/2539GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/469/2539/tableb (Properties of the 238 (E1-Sdm) CALIFA galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/469/2539/tableb?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/469/2539/tableb?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/469/2539/tableb?GETtext/xml+votable180.050000true118.846788126.74112190.0055555555555555566/545 552 554 620 738 909 948-949 975 2206 2228 2248 2251 2274 2276 2290 4053 4167 4178 4342 4445 4507 4511 4654 4801 4806 4813 4829 4840 4843 4950 4957 5028 5247 5298 5332 5505 5533 5593 5701 5889 6214 6216 6241 6261 6270 6342 6541 7214 7340 7560 7589 7824 7834 7844 8045 8341 8477 8498 8522 8562-8563 8656 8883 9124 9187 9216 9220 9381 9470-9471 9622 9628 9630 9695 9718 9798 9812 9875 9883 9885 9891 9946 9974 10111 10183 10220-10221 10380-10381 10398 10400 10515 10566 10583 10588 10595 10612 10627-10628 10674 10705 10739-10740 10773 10778 10987 11044 11070 11112 11164 11196 11290 11369 11372 11377 11383 11392 11396 11435 11525 11544 11832 11905 11944 12532 12709 13316 13380-13381 13426 13529 15002 16007 16696 16702 16788 17233-17234 17237 17350 17398 17486 17499 17578 17751 17758 17819 18008 18069 18071 18173 18241 18295 18302 18383 18775 18779 18800 18854 18931-18932 18935 18941 19073 19108 19227 19260 19387 19458 19508 19538 19618 19633 19642 19848 19939 19954 19981 19984 19996 20009 20020 20023 20031-20033 20193 20254 20279 20417 20429 22364 22652 22737 22741 23273 23337 26495 27133 27608 27719 28365 28430 28458 28513 28522 28617 28639 29973 31546 31628 31643 31688-31689 31737 32462 32471 32478 32482 32559 48880 49121 49130https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/469/2539?format=asciiOpticaldefaultJ/MNRAS/469/2539/tablebProperties of the 238 (E1-Sdm) CALIFA galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy identifiermeta.id;meta.maincharTypeHubble type based on by-eye morphological classification from Walcher et al. (2014, Cat. J/A+A/589/A1)meta.note;src.morph.typecharDistHubble flow (Galactocentric) distances (1)Mpcpos.distanceintPAAverage photometric position angle (2)degpos.posAng;stat.meanintepsAverage photometric ellipticity (2)src.ellipticityfloatInclInclination (3)degsrc.orbital.inclinationintReEffective (half-light) radius measured via growth curve analysis (Walcher et al., 2014, Cat. J/A+A/589/A1)arcsecphys.angSizeintRmaxRadial extent of the stellar kinematic data (Falcon-Barroso et al., 2017, Cat. J/A+A/597/A48)arcsecphys.angSizeintRmax/ReRadial extent of the stellar kinematic data in terms of effective radiusspect.dopplerVelocfloatVsysSystemic velocity of the galaxies (4)km/sphys.velocint(M/L)dynMedian of the posterior distributions of the dynamical mass-to-light ratios, from JAM-MCMC modelphys.composition.massLightRatiofloatE_(M/L)dynError on (M/L)dyn, upper value (5)stat.error;stat.maxfloate_(M/L)dynError on (M/L)dyn, lower value (6)stat.errorfloatbetazMedian of the posterior distributions of the azimuthal velocity anisotropies, from JAM-MCMC model.stat.fit.paramfloatE_betazError on betaz, upper value (5)stat.error;stat.maxfloate_betazError on betaz, lower value (6)stat.errorfloatCVCCircular velocity curve class (10)meta.codecharSimbadSimbad 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.mainJ/MNRAS/469/2539/tablec1Main PC eigenvectors of the 238 CVCsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintR/ReNormalized PC radiusphys.size.radius;arith.ratiofloatu1PC eigenvector u1stat.fit.paramdoubleu2PC eigenvector u2stat.fit.paramdoubleu3PC eigenvector u3stat.fit.paramdoubleu4PC eigenvector u4stat.fit.paramdoubleu5PC eigenvector u5stat.fit.paramdoubleJ/MNRAS/469/2539/tabledThe five main projections PCi of the 238 CVCsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy namemeta.id;meta.maincharPC1Main projections PC1stat.fit.paramdoublePC2Main projections PC2stat.fit.paramdoublePC3Main projections PC3stat.fit.paramdoublePC4Main projections PC4stat.fit.paramdoublePC5Main projections PC5stat.fit.paramdouble