J/ApJ/894/75ivo://CDS.VizieR/J/ApJ/894/75doi:10.26093/cds/vizier.18940075CDSLee J.H.Kang J.Lee M.G.Jang In S.2023-06-14T14:28:44Z2021-10-21T07:40:18ZCDS support team

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

cds-question@unistra.frhst-photometrygalaxiesinfrared-sourcesvisible-astronomygalaxy-classification-systemsWe report the discovery of ultra-diffuse galaxies (UDGs) in Abell 370 (A370; z=0.375). We find 46 UDGs in A370 from the images of the Hubble Frontier Fields. Most UDGs are low-luminosity red sequence galaxies, while a few of them are blue UDGs. We estimate the abundance of UDGs in A370, N(UDG)=644+/-104. Combining these results with those of Abell S1063 (z=0.348) and Abell 2744 (z=0.308), we derive a mean radial number density profile of UDGs in the three clusters. The number density profiles of UDGs and bright galaxies show a discrepancy in the central region of the clusters: the profile of UDGs shows a flattening as clustercentric distance decreases, while that of bright galaxies shows a continuous increase. This implies that UDGs are prone to disruption in the central region of the clusters. The relation between the abundance of UDGs and virial masses of their host systems is described by a power law with an index of nearly one: N(UDG){propto}M_200_^0.99+/-0.05^ for M_200_>10^13^M_{sun}_. We estimate approximately dynamical masses of UDGs using the fundamental manifold method and find that most UDGs have dwarf-like masses (M_200_<10^11^M_{sun}_). This implies that most UDGs have a dwarf-like origin and a small number of them could be failed L* galaxies. These results suggest that multiple origins may contribute to the formation and evolution of UDGs in massive galaxy clusters.2020ApJ...894...75Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/894/75CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)VII/195 : Globular Clusters in the Milky Way (Harris, 1996)VII/202 : Globular Clusters in the Milky Way (Harris, 1997)J/ApJS/161/304 : Star clusters in the MW and satellites (McLaughlin+, 2005)J/ApJ/653/240 : Low-mass SDSS dwarf galaxy properties (Geha+, 2006)J/ApJ/638/725 : Fundamental manifold of spheroids (Zaritsky+, 2006)J/AJ/134/945 : Tully-Fisher relation for SDSS galaxies (Pizagno+, 2007)J/ApJS/172/599 : SFI++ II. I-band Tully-Fisher catalog (Springob+, 2007)J/MNRAS/402/803 : M31 globular cluster system (Peacock+, 2010)J/AJ/144/4 : Dwarf galaxies in the Local Group (McConnachie+, 2012)J/ApJ/768/172 : Kinematics of red giant in M31 dSphs (Collins+, 2013)J/ApJ/813/L15 : Dwarf galaxies in Fornax cluster from NGFS (Munoz+, 2015)J/ApJ/819/162 : Chandra obs. of ultracompact dwarf galaxies (Pandya+, 2016)J/ApJS/225/11 : Subaru-UDGs in the Coma cluster (Yagi+, 2016)J/MNRAS/469/3946 : Abell 370 MUSE redshifts (Lagattuta+, 2017)J/ApJ/844/157 : Ultradiffuse gal. found in HST images of HFF (Lee+, 2017)J/ApJ/842/133 : HI-bearing ultra-diffuse ALFALFA galaxies (Leisman+, 2017)J/MNRAS/468/703 : Abell 168 ultra-diffuse galaxies distribution (Roman+, 2017)J/A+A/608/A142 : Fornax Deep Survey with VST. III. LSB gal. (Venhola+, 2017)J/MNRAS/470/1512 : Faint LSB galaxy cand. in Perseus cluster (Wittmann+, 2017)J/ApJ/858/102 : Gemini/NIFS and HST obs. of the galaxy M59-UCD3 (Ahn+, 2018)J/ApJ/857/104 : Low surface brightness galaxies from HSC-SSP (Greco+, 2018)J/ApJ/859/52 : NGFS. III. Dwarf galaxies (Ordenes-Briceno+, 2018)J/MNRAS/491/3496 : Andromeda XIX member stars (Collins+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/894/75https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/894/75http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/894/75https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/894/75https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/894/75http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/894/75GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/894/75/gal (Ultra-diffuse galaxies (UDGs; Table 4) and low surface brightness (LSB) dwarf galaxies (Table 5) in Abell 370)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/894/75/gal?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/894/75/gal?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/894/75/gal?GETtext/xml+votable180.050000true39.94771-1.583730.0055555555555555566/177412.3657755224268815e-19 2.565265938961496e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/894/75?format=asciiOpticalInfrareddefaultJ/ApJ/894/75/galUltra-diffuse galaxies (UDGs; Table 4) and low surface brightness (LSB) dwarf galaxies (Table 5) in Abell 370SimbadSimbad column added by the CDSmeta.ref.urlcharTypeUltra-diffuse galaxy (UDG; Table 4) or low surface brightness (LSB) dwarf galaxy (Table 5)meta.code.classcharNameName of galaxy (1)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[39.94/40.08] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-1.65/-1.55] Declination (J2000)degpos.eq.dec;meta.mainF814W[23.9/27.8] Integrated magnitude in HST ACS/WFC F814W bandmagphot.mag;em.opt.Ifloate_F814W[0.01/0.1] Uncertainty in F814Wmagstat.errorfloatI-Y[-0.5/0.5] F814W-F105W color indexmagphot.color;em.opt;em.IRfloate_I-Y[0.01/0.1] Uncertainty in I-Ymagstat.errorfloatReffc[1/6.2] Circularized effective radius (2)kpcphys.size.radiusfloate_Reffc[0.02/0.6] Uncertainty in Reffckpcstat.errorfloatmuabs[23.8/25.5] Absolute mean effective surface brightness in r' band (3)mag.arcsec**-2phot.mag.sb;stat.meanfloate_muabs[0.02/0.8] Uncertainty in muabsmag.arcsec**-2stat.errorfloatn[0.18/2.8] Sersic index from GALFITstat.fit.paramfloate_n[0.02/0.6] Uncertainty in nstat.errorfloatq[0.32/1] Axis ratio from GALFITphys.size.axisRatiofloate_q[0/0.3] Uncertainty in qstat.errorfloat