J/ApJ/960/9ivo://CDS.VizieR/J/ApJ/960/9doi:10.26093/cds/vizier/ba-y0-9CDSZhao P.Liu F.S.Cui Q.Yesuf H.M.Wu H.2026-07-02T12:01:14Z2026-03-04T08:51:18ZCDS support team

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

cds-question@unistra.frhst-photometrygalaxy-clustersgalaxiesvisible-astronomytwo-color-diagramsgalaxy-radiigalaxy-classification-systemsWe have measured structural parameters and radial color profiles of 108 ultradiffuse galaxies (UDGs), carefully selected from six distant massive galaxy clusters in the Hubble Frontier Fields (HFF) in a redshift range from 0.308 to 0.545. Our best-fitting GALFIT models show that the HFF UDGs have a median Sersic index of 1.09, which is close to 0.86 for local UDGs in the Coma cluster. The median axis-ratio value is 0.68 for HFF UDGs and 0.74 for Coma UDGs, respectively. The structural similarity between HFF and Coma UDGs suggests that they are the same kind of galaxies seen at different times, and that the structures of UDGs do not change at least for several billion years. By checking the distribution of HFF UDGs in the rest-frame UVJ and UVI diagrams, we find a large fraction of them are star forming. Furthermore, a majority of HFF UDGs show small U-V color gradients within the 1*R_e,SMA_ region, and the fluctuation of the median radial color profile of HFF UDGs is smaller than 0.1mag, which is compatible to Coma UDGs. Our results indicate that cluster UDGs may fade or quench in a self-similar way, irrespective of the radial distance, in less than ~4Gyr.2024ApJ...960....9Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/960/9CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/463/503 : Early-type dwarf galaxies in Fornax cluster (Mieske+, 2007)J/ApJS/191/143 : HST/ACS Coma cluster survey. II. (Hammer+, 2010)J/ApJ/801/97 : GOODS-S & UDS stellar mass cat. from CANDELS (Santini+, 2015)J/A+A/590/A31 : ASTRODEEP Frontier Fields Catalogues (Merlin+, 2016)J/A+A/590/A31 : ASTRODEEP Frontier Fields Catalogues (Merlin+, 2016)J/ApJS/225/11 : Subaru-UDGs in the Coma cluster (Yagi+, 2016)J/ApJ/842/133 : HI-bearing ultra-diffuse ALFALFA galaxies (Leisman+, 2017)J/ApJ/844/157 : Ultradiffuse galaxies in deep HST images of HFF (Lee+, 2017)J/A+A/608/A142 : Fornax Deep Survey with VST. III. LSB gal. (Venhola+, 2017)J/ApJS/235/14 : HFF-DeepSpace phot. cat. of 12 HFF fields (Shipley+, 2018)J/ApJ/894/75 : Ultra-diffuse & LSB dwarf gal. in A370 from HFF (Lee+, 2020)J/ApJ/923/257 : Ultra-diffuse gal with spectroscopic obs. (Kadowaki+, 2021)J/ApJS/257/60 : SMUDGes. II. Expanded survey & Stripe 82 (Zaritsky+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/960/9https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/960/9http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/960/9https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/960/9https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/960/9http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/960/9GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/960/9/table3 (Catalog of 108 ultradiffuse galaxies (UDGs) identified in the Hubble Frontier Fields (HFF) Program)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/960/9/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/960/9/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/960/9/table3?GETtext/xml+votable180.050000true3.5817-30.43120.0055555555555555566/6383 16486 17741 28448 34793 46474 46496https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/960/9?format=asciiOpticaldefaultJ/ApJ/960/9/table3Catalog of 108 ultradiffuse galaxies (UDGs) identified in the Hubble Frontier Fields (HFF) ProgramrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCluster identifier as in Shipley+ 2018, J/ApJS/235/14 (ANNNN-clu or MHHMM-clu)meta.id.parentcharGal[8/8818] Galaxy identifier within the cluster ID from Shipley's catalog (2018, J/ApJS/235/14)meta.id.part;meta.mainintRAJ2000[3.5/342.3] Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-44.6/37.8] Declination (J2000)degpos.eq.dec;meta.mainmu[24/25.3] Absolute surface brightness, <{mu}>_abs_, in the F814W bandmag.arcsec**-2phot.mag.sbfloatRe[1.5/4.2] Effective radius along the semimajor axiskpcphys.size.radiusfloatn[0.3/3] Sersic indexstat.fit.paramfloatq[0.26/1] Axis ratiophys.size.axisRatiofloatU-V[-0.5/2.3] Rest-frame U-V color; see Section 3.1magphot.color;em.opt.U;em.opt.Vfloat