J/ApJS/221/11 CANDELS visual classifications for GOODS-S (Kartaltepe+, 2015) ================================================================================ CANDELS visual classifications: scheme, data release, and first results. Kartaltepe 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. =2015ApJS..221...11K (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Galaxy catalogs ; Morphology ; Photometry, HST Keywords: cosmology: observations; galaxies: evolution; galaxies: high-redshift Abstract: We 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 070% 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. Description: The Cosmic Assembly Near-infrared Dark Energy Legacy Survey (CANDELS) is an HST Multi-Cycle Treasury Program to image portions of five of the most commonly studied legacy fields (GOODS-N, GOODS-S, COSMOS, UDS and EGS) with WFC3 in the NIR. The survey has observed all five fields to 2-orbit depth in F125W (J-band, 2/3 orbit) and F160W (H-band, 4/3 orbit) and the central regions of GOODS-N and GOODS-S to 10 orbit depth in these bands as well as F105W (Y-band). ACS parallel imaging has also been obtained for all of these fields in F814W and F606W. For details on the full CANDELS survey, see Grogin et al. (2011ApJS..197...35G). In addition to the CANDELS observations, a portion of GOODS-S was also observed as a part of the WFC3 Early Release Science (ERS; Windhorst et al. 2011ApJS..193...27W) campaign in Y, J, and H. The CANDELS observations began in 2010 October and were completed in 2013 August. For this paper, we use mosaics at three different depths for comparison. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table2.dat 253 68842 *CANDELS: GOODS-S raw visual classification catalog table3.dat 487 12702 *CANDELS: GOODS-S fractional visual classification catalog -------------------------------------------------------------------------------- Note on table2.dat and table3.dat: There are two different flavors of catalogs --the "raw" and the "fractional." The raw catalogs are simply collections of all of the raw classifications. Each object therefore has multiple entries (as many entries as there are classifiers) and each classifier is identified by a unique number. The second set of catalogs, the "fractional" ones, are the ones that are most likely to be useful to the community. These catalogs contain one entry per object and each classification is marked by the fraction of people who checked that box. So if one out of three classifiers classified an object as a disk, one as irregular, and two as a spheroid, then the disk column will have the value 0.33, the spheroid column 0.67, and the irregular column as 0.33. We have created separate catalogs for each depth. There is a 2-epoch depth catalog covering the entire GOODS-S field, one covering just the deep region, and one each covering the deep region at 4- and 10-epoch depths. -------------------------------------------------------------------------------- See also: III/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 in Simbad. -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Prepared by [AAS], Emmanuelle Perret [CDS] 27-Jan-2016