J/ApJ/799/159ivo://CDS.VizieR/J/ApJ/799/159doi:10.26093/cds/vizier.17990159CDSZaritsky D.Aravena M.Athanassoula E.Bosma A.Comeron S.,Elmegreen B.G.Erroz-Ferrer S.Gadotti D.A.Hinz J.L.Ho L.C.,Holwerda B.Knapen J.H.Laine J.Laurikainen E.Munoz-Mateos J.C.,Salo H.Sheth K.2017-10-09T13:34:17Z2015-07-15T11:41:32ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesglobular-star-clustersUsing 3.6{mu}m images of 97 early-type galaxies, we develop and verify methodology to measure globular cluster populations from the S^4^G survey images. We find that (1) the ratio, T_N_, of the number of clusters, N_CL_, to parent galaxy stellar mass, M_*_, rises weakly with M_*_ for early-type galaxies with M_*_>10^10^M_{sun}_ when we calculate galaxy masses using a universal stellar initial mass function (IMF) but that the dependence of T_N_ on M_*_ is removed entirely once we correct for the recently uncovered systematic variation of IMF with M_*_; and (2) for M_*_<10^10^M_{sun}_, there is no trend between N_CL_ and M_*_, the scatter in T_N_is significantly larger (approaching two orders of magnitude), and there is evidence to support a previous, independent suggestion of two families of galaxies. The behavior of N_CL_ in the lower-mass systems is more difficult to measure because these systems are inherently cluster-poor, but our results may add to previous evidence that large variations in cluster formation and destruction efficiencies are to be found among low-mass galaxies. The average fraction of stellar mass in clusters is ~0.0014 for M_*_>10^10^M_{sun}_ and can be as large as ~0.02 for less massive galaxies. These are the first results from the S^4^G sample of galaxies and will be enhanced by the sample of early-type galaxies now being added to S^4^G and complemented by the study of later-type galaxies within S^4^G.2015ApJ...799..159Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/799/159CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/217/32 : S4G galaxy morphologies in the CVRHS system (Buta+, 2015)J/MNRAS/444/3015 : Morphologies of S4G galaxies (Laine+, 2014)J/MNRAS/441/1992 : Galaxies with disc breaks in S4G and NIRS0S (Laine+, 2014)J/A+A/569/A91 : Optical imaging for S4G (Knapen+, 2014)J/AJ/147/134 : Tully-Fisher relation for S^4^G galaxies (Zaritsky+, 2014)J/ApJ/772/135 : 3.6um surface brightness from S4G (Zaritsky+, 2013)J/ApJ/772/82 : A catalog of globular cluster systems (Harris+, 2013)J/MNRAS/428/389 : SLUGGS globular clusters in early-type gal. (Pota+, 2013)J/AJ/143/87 : Massive M31 globular clusters with IRAC (Barmby+, 2012)J/ApJS/197/33 : The M87 globular cluster system (Strader+, 2011)J/PASP/122/1397 : Spitzer Survey of Stellar Structure in Gal. (Sheth+, 2010)J/AJ/139/1871 : Kinematics of globulars in NGC 5128 (Woodley+, 2010)J/AJ/138/1243 : The star formation history of the LMC (Harris+, 2009)J/MNRAS/389/1150 : Spitzer photom. of globulars in 2 galaxies (Spitler+, 2008)J/ApJ/681/197 : ACS Virgo Cluster Survey. XV (Peng+, 2008)J/MNRAS/385/361 : BVRcIc phot. of NGC 821 globular clusters (Spitler+, 2008)J/AJ/132/2268 : SAGE calibration stars (Meixner+, 2006)J/A+A/433/43 : C-T1 phot. of NGC 4636 globular clusters (Dirsch+, 2005)J/AJ/105/1762 : Globular clusters around NGC 1399 (Ostrov+ 1993)http://irsa.ipac.caltech.edu/data/SPITZER/S4G/ : S4G home page on NASA/IRSAhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/799/159https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/799/159http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/799/159https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/799/159https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/799/159http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/799/159GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/799/159/table1 (Globular cluster population properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/799/159/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/799/159/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/799/159/table1?GETtext/xml+votable180.050000true50.9053208-35.77838060.0055555555555555566/4565 5134 5196 5288 5397 5598 5628 6042 6097 7374 7385 7424 7464 7479 7696 8129 10454 10845 10924 10980 17612 19442 19697 24824 25044 25077 25603 25772 26090 26091 26157 26166 26174 26210 26301 26306 26307 26313 26432 26542 27515 27719 27721 27730 27739 27743 27766 27773 27774 27857 27859 27861 27905 27908 27914 27937 28036 28037 28142 28221 28311 28333 28483 28495 28538 28653 31340 33271 33954 33957 34260 34363 34377 34521 34534 34538 34541 34695 34724 35911 35923 36153 36231 36261 36276 36295 36558 36785 46615 484843.9193497546148093e-20 6.185923063528282e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/799/159?format=asciiInfrareddefaultJ/ApJ/799/159/table1Globular cluster population propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharDM[30.2/32.4] Galaxy distance modulusmagphot.mag.distModfloatTT[-5/1] Galaxy T-Type of Buta et al. 2015 (J/ApJS/217/32)src.morph.typeint[3.6][7.9/15.2]? Spitzer/IRAC 3.6 micron AB magnitude (1)magphot.mag;em.IR.3-4umfloatnullable[4.5][8.4/15.7]? Spitzer/IRAC 4.5 microns AB magnitude (1)magphot.mag;em.IR.4-8umfloatnullableN50[2/2698] Number of clusters within 50kpc (2)meta.numberintTN[0.05/142]? Specific frequency T_N_ of globular clusters per 10^9^M_{sun}_ (3)GsolMass**-1stat.fit.paramfloatnullablee_TN? Lower uncertainty on TN (3)GsolMass**-1stat.errorfloatnullableE_TN? Upper uncertainty on TN (3)GsolMass**-1stat.error;stat.maxfloatnullableBackLogarithm of background level (4)log(pc**-2)instr.background;phys.atmol.levelfloataCluster radial profile fitting parameter (5)spect.dopplerVelocfloatbCluster radial profile fitting parameter (5)spect.dopplerVelocfloatQ[0/1] Quality flag; 1=good, 0=poormeta.code.qualintB15Display classifications from Buta et al. 2015, J/ApJS/217/32meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad 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