J/ApJ/855/142ivo://CDS.VizieR/J/ApJ/855/142doi:10.26093/cds/vizier.18550142CDSEigenthaler P.Puzia T.H.Taylor M.A.Ordenes-Briceno Y.Munoz R.P.,Ribbeck K.X.Alamo-Martinez K.A.Zhang H.Angel S.Capaccioli M.,Cote P.Ferrarese L.Galaz G.Grebel E.K.Hempel M.Hilker M.,Lancon A.Mieske S.Miller B.Paolillo M.Powalka M.Richtler T.,Roediger J.Rong YuSanchez-Janssen R.Spengler C.2019-02-27T06:02:11Z2019-02-21T14:04:38ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesphotometrygalaxy-classification-systemsvisible-astronomyWe present a photometric study of the dwarf galaxy population in the core region (<~r_vir_/4) of the Fornax galaxy cluster based on deep u'g'i' photometry from the Next Generation Fornax Cluster Survey. All imaging data were obtained with the Dark Energy Camera mounted on the 4m Blanco telescope at the Cerro Tololo Interamerican Observatory. We identify 258 dwarf galaxy candidates with luminosities -17<~Mg'<~-8mag, corresponding to typical stellar masses of 9.5>~logM*/M_{sun}_>~5.5, reaching ~3mag deeper in point-source luminosity and ~4mag deeper in surface brightness sensitivity compared to the classic Fornax Cluster Catalog. Morphological analysis shows that the dwarf galaxy surface-brightness profiles are well represented by single-component Sersic models with average Sersic indices of <n>_u',g',i'_=(0.78-0.83)+/-0.02 and average effective radii of <r_e_>_u',g',i'_=(0.67-0.70+/-0.02kpc. Color-magnitude relations indicate a flattening of the galaxy red sequence at faint galaxy luminosities, similar to the one recently discovered in the Virgo cluster. A comparison with population synthesis models and the galaxy mass-metallicity relation reveals that the average faint dwarf galaxy is likely older than ~5Gyr. We study galaxy scaling relations between stellar mass, effective radius, and stellar mass surface density over a stellar mass range covering six orders of magnitude. We find that over the sampled stellar mass range several distinct mechanisms of galaxy mass assembly can be identified: (1) dwarf galaxies assemble mass inside the half-mass radius up to logM*~8.0, (2) isometric mass assembly occurs in the range 8.0<~logM*/M_{sun}_<~10.5, and (3) massive galaxies assemble stellar mass predominantly in their halos at logM*~10.5 and above.2018ApJ...855..142Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/855/142CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/232 : STELIB: A library of stellar spectra at R~2000 (Le Borgne+, 2003)VII/180 : Galaxies in Fornax Cluster and five nearby groups (Ferguson+ 1990)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/AJ/90/1681 : The Virgo Cluster Catalog (VCC) (Binggeli+, 1985)J/A+AS/127/409 : New nearby dwarf galaxy candidates list (Karachentseva+ 1998)J/MNRAS/335/712 : R magnitude of cluster of galaxies (Trentham+, 2002)J/ApJS/157/1 : Red-Sequence Cluster Survey (Gladders+, 2005)J/MNRAS/363/1019 : Nucleated dwarf ellipticals in Virgo cluster (Grant+, 2005)J/ApJS/161/304 : Star clusters in the MW and satellites (McLaughlin+, 2005)J/ApJ/621/673 : Line indices for 124 early-type galaxies (Thomas+, 2005)J/ApJS/164/334 : ACS Virgo Cluster Survey. VI (Ferrarese+, 2006)J/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006)J/AJ/133/504 : Galaxies around CenA/M83 galaxy complex (Karachentsev+, 2007)J/ApJ/660/1186 : VCC galaxies classification with SDSS (Lisker+, 2007)J/A+A/463/503 : Early-type dwarf galaxies in Fornax cluster (Mieske+, 2007)J/A+A/486/697 : Hydra I Cluster Catalogue (HCC) (Misgeld+, 2008)J/MNRAS/386/2311 : CT1 photometry of Antlia early-type galaxies (Smith+, 2008)J/ApJS/182/216 : Surface photometry of Virgo ellipticals (Kormendy+, 2009)J/A+A/513/A52 : Velocities of NGC 1399 globular clusters (Schuberth+, 2010)J/MNRAS/413/813 : ATLAS3D project. I. (Cappellari+, 2011)J/ApJS/197/21 : The Carnegie-Irvine Galaxy Survey (CGS). I. (Ho+, 2011)J/MNRAS/414/3699 : Study of hot stellar systems and galaxies (Misgeld+, 2011)J/ApJ/726/108 : Dispersion-supported stellar systems (Tollerud+, 2011)J/AJ/144/4 : Dwarf galaxies in the Local Group (McConnachie+, 2012)J/ApJ/763/40 : UBVI of GCs in the Fornax galaxy cluster (Kim+, 2013)J/ApJ/779/102 : Metallicities of RGB stars in dwarf galaxies (Kirby+, 2013)J/ApJ/812/34 : UCD candidates in M87/M49/M60 regions (Liu+, 2015)J/ApJ/813/L15 : Dwarf galaxies in Fornax cluster from NGFS (Munoz+, 2015)J/ApJ/805/65 : FLAMES obs. of NGC 5128's globular clusters (Taylor+, 2015)J/ApJ/802/30 : NGVS VI. Ultra-compact dwarfs in M87 (Zhang+, 2015)J/ApJS/227/12 : NGVS XXV. Virgo globular clusters photometry (Powalka+, 2016)J/MNRAS/459/4450 : Peculiar compact stellar systems in Fornax (Wittmann+, 2016)J/MNRAS/469/3444 : Centaurus A's Baryonic Structures II. (Taylor+, 2017)J/A+A/608/A142 : Fornax Deep Survey with VST. III. (Venhola+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/855/142https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/855/142http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/855/142https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/855/142https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/855/142http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/855/142GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/855/142/dgal (Photometric properties and stellar masses and structural properties of the dwarf galaxy (tables 1 and 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/855/142/dgal?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/855/142/dgal?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/855/142/dgal?GETtext/xml+votable180.050000true53.28596306-35.396948890.0055555555555555565/8633 6/34531 34537 34540 345412.3230668610021367e-19 6.11321178556617e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/855/142?format=asciiOpticaldefaultJ/ApJ/855/142/dgalPhotometric properties and stellar masses and structural properties of the dwarf galaxy (tables 1 and 2)SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/258] Internal index numbermeta.idintNGFSIdentifier (HHMMSS+DDMMSS; J2000)meta.id;meta.maincharRefReference to galaxies listed (G1)meta.id.crosscharRAJ2000[53.2/56] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-36.6/-34.5] Declination (J2000)degpos.eq.dec;meta.maini'mag[13/22.2]? Apparent CTIO/DECam i' band AB magnitudemagphot.mag;em.opt.Ifloatnullableg'mag[14.2/22.9]? Apparent CTIO/DECam g' band AB magnitudemagphot.mag;em.opt.Bfloatnullableu'mag[15.4/22.9]? Apparent CTIO/DECam u' band AB magnitudemagphot.mag;em.opt.Ufloatnullable(g'-i')0[0.1/2.3]? Intrinsic (g'-i') color indexmagphot.color;em.opt.B;em.opt.Ifloatnullable(u'-g')0[-0.2/1.9]? Intrinsic (u'-g') color indexmagphot.color;em.opt.U;em.opt.Bfloatnullable(u'-i')0[0.5/2.8]? Intrinsic (u'-i') color indexmagphot.color;em.opt.U;em.opt.Ifloatnullableg'Mag[-17.3/-8.5]? Absolute g' band magnitude (1)magphys.magAbs;em.opt.BfloatnullablelogM*[5.7/9.6]? Log stellar masslog(solMass)phys.massdoublenullableType[ox] Morphological galaxy type classification (x=non-nucleated or o=nucleated dwarf galaxy)meta.codecharrei[0.1/2.8]? The i' band effective radiikpcphys.size.radiusfloatnullableni[0.08/2.3]? The i' band Sersic index (2)spect.index;em.opt.Ifloatnullableelli[0/0.7]? The i' band ellipticity (1-b/a)src.ellipticityfloatnullablePAi? The i' band position angle (3)degpos.posAngintnullablereg[0.1/2.4]? The g' band effective radiikpcphys.size.radiusfloatnullableng[0.06/1.7]? The g' band Sersic index (2)spect.index;em.opt.Bfloatnullableellg[0/0.7]? The g' band ellipticity (1-b/a)src.ellipticityfloatnullablePAg? The g' band position angle (3)degpos.posAngintnullablereu[0.03/1.9]? The u' band effective radiikpcphys.size.radiusfloatnullablenu[0.1/2.4]? The u' band Sersic index (2)spect.index;em.opt.Ufloatnullableellu[0/0.7]? The u' band ellipticity (1-b/a)src.ellipticityfloatnullablePAu[5/180]? The u' band position angle (3)degpos.posAngintnullablePapIDisplay data from Paper I (Munoz+, 2015, J/ApJ/813/L15)meta.ref.urlintnullableNEDNED column added by the CDSmeta.ref.urlchar