J/ApJS/221/11ivo://CDS.VizieR/J/ApJS/221/11doi:10.26093/cds/vizier.22210011CDSKartaltepe J.S.Mozena M.Kocevski D.McIntosh D.H.Lotz J.Bell E.F.,Faber S.Ferguson H.Koo D.Bassett R.Bernyk M.Blancato K.,Bournaud F.Cassata P.Castellano M.Cheung E.Conselice C.J.,Croton D.Dahlen T.de Mello D.F.DeGroot L.Donley J.Guedes J.,Grogin N.Hathi N.Hilton M.Hollon B.Koekemoer A.Liu N.,Lucas R.A.Martig M.McGrath E.McPartland C.Mobasher B.Morlock A.,O'Leary E.Peth M.Pforr J.Pillepich A.Rosario D.Soto E.,Straughn A.Telford O.Sunnquist B.Trump J.Weiner B.Wuyts S.2017-01-23T22:00:00Z2016-02-05T15:14:56ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsgalaxy-classification-systemshst-photometryWe have undertaken an ambitious program to visually classify all galaxies in the five CANDELS fields down to H<24.5 involving the dedicated efforts of over 65 individual classifiers. Once completed, we expect to have detailed morphological classifications for over 50000 galaxies spanning 0<z<4 over all the fields, with classifications from 3 to 5 independent classifiers for each galaxy. Here, we present our detailed visual classification scheme, which was designed to cover a wide range of CANDELS science goals. This scheme includes the basic Hubble sequence types, but also includes a detailed look at mergers and interactions, the clumpiness of galaxies, k-corrections, and a variety of other structural properties. In this paper, we focus on the first field to be completed --GOODS-S, which has been classified at various depths. The wide area coverage spanning the full field (wide+deep+ERS) includes 7634 galaxies that have been classified by at least three different people. In the deep area of the field, 2534 galaxies have been classified by at least five different people at three different depths. With this paper, we release to the public all of the visual classifications in GOODS-S along with the Perl/Tk GUI that we developed to classify galaxies. We present our initial results here, including an analysis of our internal consistency and comparisons among multiple classifiers as well as a comparison to the Sersic index. We find that the level of agreement among classifiers is quite good (>70% across the full magnitude range) and depends on both the galaxy magnitude and the galaxy type, with disks showing the highest level of agreement (>50%) and irregulars the lowest (<10%). A comparison of our classifications with the Sersic index and rest-frame colors shows a clear separation between disk and spheroid populations. Finally, we explore morphological k-corrections between the V-band and H-band observations and find that a small fraction (84 galaxies in total) are classified as being very different between these two bands. These galaxies typically have very clumpy and extended morphology or are very faint in the V-band.2015ApJS..221...11Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/221/11CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/268 : DEEP2 Redshift Survey, Data Release 4 (Matthews+ 2013)II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)VII/246 : GOODS Morphological Catalog (Bundy+, 2005)II/261 : GOODS initial results (Giavalisco+, 2004)J/ApJ/801/97 : GOODS-S + UDS stellar masses from CANDELS (Santini+, 2015)J/MNRAS/435/2835 : Morphological types from Galaxy Zoo 2 (Willett+, 2013)J/ApJS/207/24 : GOODS-S CANDELS multiwavelength catalog (Guo+, 2013)J/ApJ/775/106 : CANDELS passive & massive early-type galaxies (Cassata+, 2013)J/ApJ/765/28 : CFHTLS galaxies with faint tidal features (Atkinson+, 2013)J/ApJ/763/73 : Surface density profiles of GOODS-S galaxies (Szomoru+, 2013)J/MNRAS/427/1666 : Massive galaxies in CANDELS-UDS field (Bruce+, 2012)J/ApJS/203/24 : Structural param. of galaxies in CANDELS (van der Wel+, 2012)J/ApJ/743/146 : HST/WFC3 observations in HUDF and GOODS-S (Cameron+, 2011)J/ApJ/735/L22 : HUDF galaxy properties at z~2 (Szomoru+, 2011)J/MNRAS/413/80 : Hubble Space Telescope GOODS NICMOS Survey (Conselice+, 2011)J/MNRAS/410/166 : Morphological types from Galaxy Zoo 1 (Lintott+, 2011)J/ApJ/721/98 : Morphology of 70um COSMOS galaxies (Kartaltepe+, 2010)J/ApJS/186/427 : Detailed morphology of SDSS galaxies (Nair+, 2010)J/ApJ/684/1026 : Photometric profiles from GOODS data (Azzollini+, 2008)J/ApJS/174/136 : GEMS survey data and catalog (Caldwell+, 2008)J/ApJS/172/615 : GALFIT result for GEMS galaxies (Haussler+, 2007)J/ApJ/655/51 : HDFS IRAC observations of 2<z<3.5 galaxies (Wuyts+, 2007)J/AJ/128/163 : Galaxy morphological classification (Lotz+, 2004)J/ApJS/147/1 : Classification of nearby galaxies (Conselice+, 2003)J/ApJ/588/218 : i*g* photometry of SDSS EDR galaxies (Abraham+, 2003)J/ApJ/499/112 : HST CFRS and LDSS redshift surveys. I. (Brinchmann+ 1998)J/ApJS/107/1 : Morphologies of distant galaxies II (Abraham+ 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/221/11https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/221/11http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/221/11https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/221/11https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/221/11http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/221/11GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/221/11/table2 (*CANDELS: GOODS-S raw visual classification catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/221/11/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/221/11/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/221/11/table2?GETtext/xml+votable180.050000true53.10909306-27.8697550.005555555555555556Cone search capability for table J/ApJS/221/11/table3 (*CANDELS: GOODS-S fractional visual classification catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/221/11/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/221/11/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/221/11/table3?GETtext/xml+votable180.050000true53.10909306-27.8697550.0055555555555555566/35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/221/11?format=asciiOpticaldefaultJ/ApJS/221/11/table2*CANDELS: GOODS-S raw visual classification catalogf_DbStructure Flag: Double nucleimeta.codeintf_TpStructure Flag: Tadpolemeta.codeintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDepthDepth catalogs: 2, 4, or 10 epoch (G1)meta.code;obsintAreaGOODS-S Survey area: deep, wide, ersobs.fieldcharIDObject Identifier (1)meta.id;meta.maincharRAJ2000[52.99/53.27] Right Ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000[-28/-27.6] Declination (J2000)degpos.eq.dec;meta.mainindexedSeq[1/25807]? Sequential Object Identifier from Guo et al. (2013, J/ApJS/207/24) (G2)meta.idintnullableHmag[13.7/25] H band magnitude, WFPC3/IR F160Wmagphot.mag;em.IR.HfloatClSphMorphology Class, Spheroidsrc.classintClDkMorphology Class, Disksrc.classintClIrMorphology Class, Irregularsrc.classintClPSMorphology Class, Point Source / compactsrc.classintClUnMorphology Class, Unclassifiablesrc.classintClInt[0/4] Interaction Class (2)src.classintC0P0Clump Analysis: No Major Clumps; No Patchinessmeta.codeintC1P0Clump Analysis: 1-2 Major Clumps; No Patchinessmeta.codeintC2P0Clump Analysis: 3+ Major Clumps; No Patchinessmeta.codeintC0P1Clump Analysis: No Major Clumps; Some Patchinessmeta.codeintC1P1Clump Analysis: 1-2 Major Clumps; Some Patchinessmeta.codeintC2P1Clump Analysis: 3+ Major Clumps; Some Patchinessmeta.codeintC0P2Clump Analysis: No Major Clumps; Lots of Patchinessmeta.codeintC1P2Clump Analysis: 1-2 Major Clumps; Lots of Patchinessmeta.codeintC2P2Clump Analysis: 3+ Major Clumps; Lots of Patchinessmeta.codeintq_BlQuality Flag: Bad deblendmeta.code.qualintq_imgQuality Flag: Image quality problemmeta.code.qualintq_ClQuality Flag: Uncertain classificationmeta.code.qualintf_VbandK corr Flag: different class in V bandmeta.codeintf_zbandK corr Flag: different class in z bandmeta.codeintf_JbandK corr Flag: different class in J bandmeta.codeintf_TarmsStructure Flag: Tidal Armsmeta.codeintf_asymStructure Flag: Asymmetricmeta.codeintf_SarmsStructure Flag: Spiral armsmeta.codeintf_BarStructure Flag: Barmeta.codeintf_PSContStructure Flag: Point source contaminationmeta.codeintf_Edge-onStructure Flag: Edge-on diskmeta.codeintf_Face-onStructure Flag: Face-on diskmeta.codeintf_ChainStructure Flag: Chain galaxymeta.codeintf_DkStructure Flag: Disk dominatedmeta.codeintf_BgStructure Flag: Bulge dominatedmeta.codeintIDCl[1/68] Individual Classifier code, 1-68meta.idintCommCommentsmeta.notecharNsNumber of sources within 0.3" from this galaxy in this tablemeta.ref.urlintnullableAllDisplay all data for this galaxy within 0.3" in this catalogmeta.ref.urlcharJ/ApJS/221/11/table3*CANDELS: GOODS-S fractional visual classification catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDepthDepth catalogs: 2, 4, or 10 epoch (G1)meta.code;obsintAreaGOODS-S Survey area: deep, wide, ersobs.fieldcharIDObject Identifier (1)meta.id;meta.maincharRAJ2000[52.99/53.27] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-28/-27.6] Declination (J2000)degpos.eq.dec;meta.mainSeq[1/25807]? Sequential Object Identifier from Guo et al. (2013, J/ApJS/207/24) (G2)meta.idintnullableHmag[13/25] H band magnitude, HST WFPC3/IR F160Wmagphot.mag;em.IR.HfloatNCl[3/66] Number of classifications for that galaxymeta.numberintf(Sph)Fraction of classifiers that checked Spheroidstat.fit.paramdoublef(Dk)Fraction of classifiers that checked Diskstat.fit.paramdoublef(Ir)Fraction of classifiers that checked Irregularstat.fit.paramdoublef(DS)Fraction of classifiers that checked Disk and spheroidstat.fit.paramdoublef(DI)Fraction of classifiers that checked Disk and Irregularstat.fit.paramdoublef(SI)Fraction of classifiers that checked Spheroid and Irregularstat.fit.paramdoublef(DSI)[0/0.6] Fraction of classifiers that checked Disk, Spheroid, and Irregularstat.fit.paramdoublef(PS)Fraction of classifiers that checked Point sourcestat.fit.paramdoublef(UnCl)Fraction of classifiers that checked Unclassifiablestat.fit.paramdoublef(M)Fraction of classifiers that checked Mergerstat.fit.paramdoublef(Int1)Fraction of classifiers that checked Interaction within segmapstat.fit.paramdoublef(Int2)Fraction of classifiers that checked Interaction beyond segmapstat.fit.paramdoublef(Comp)Fraction of classifiers that checked Non-interacting companionstat.fit.paramdoublef(NoInt)Fraction of classifiers that checked No interactionsstat.fit.paramdoublef(Int)Fraction of classifiers that checked Any interactionstat.fit.paramdoublef(C0P0)Fraction of classifiers that checked No Major Clumps; No Patchinessstat.fit.paramdoublef(C1P0)Fraction of classifiers that checked 1-2 Major Clumps; No Patchinessstat.fit.paramdoublef(C2P0)[0/0.8] Fraction of classifiers that checked 3+ Major Clumps; No Patchinessstat.fit.paramdoublef(C0P1)Fraction of classifiers that checked No Major Clumps; Some Patchinessstat.fit.paramdoublef(C1P1)Fraction of classifiers that checked 1-2 Major Clumps; Some Patchinessstat.fit.paramdoublef(C2P1)Fraction of classifiers that checked 3+ Major Clumps; Some Patchinessstat.fit.paramdoublef(C0P2)Fraction of classifiers that checked No Major Clumps; Lots of Patchinessstat.fit.paramdoublef(C1P2)Fraction of classifiers that checked 1-2 Major Clumps; Lots of Patchinessstat.fit.paramdoublef(C2P2)Fraction of classifiers that checked 3+ Major Clumps; Lots of Patchinessstat.fit.paramdoublef(Dbl)Fraction of classifiers that checked Bad deblendstat.fit.paramdoublef(ImgQ)Fraction of classifiers that checked Image quality problemstat.fit.paramdoublef(Unc)Fraction of classifiers that checked uncertain classificationstat.fit.paramdoublef(FlagV)Fraction of classifiers that checked Kcorr, different class in V bandstat.fit.paramdoublef(Flagz)Fraction of classifiers that checked Kcorr, different class in z bandstat.fit.paramdoublef(FlagJ)[0/0.7] Fraction of classifiers that checked Kcorr, different class in J bandstat.fit.paramdoublef(TArms)Fraction of classifiers that checked Tidal armsstat.fit.paramdoublef(Db)Fraction of classifiers that checked Double nucleistat.fit.paramdoublef(Asym)Fraction of classifiers that checked Asymmetricstat.fit.paramdoublef(Sp)Fraction of classifiers that checked Spiral armsstat.fit.paramdoublef(Bar)Fraction of classifiers that checked Barstat.fit.paramdoublef(PSc)Fraction of classifiers that checked Point source contaminationstat.fit.paramdoublef(edge)Fraction of classifiers that checked Edge-on diskstat.fit.paramdoublef(face)Fraction of classifiers that checked Face-on diskstat.fit.paramdoublef(Tp)Fraction of classifiers that checked Tadpolestat.fit.paramdoublef(Ch)Fraction of classifiers that checked Chain galaxystat.fit.paramdoublef(DkD)Fraction of classifiers that checked Disk dominatedstat.fit.paramdoublef(Bg)Fraction of classifiers that checked Bulge dominatedstat.fit.paramdoubleAllDisplay all data for this galaxy within 0.3" in this catalogmeta.ref.urlchar