J/ApJ/862/12ivo://CDS.VizieR/J/ApJ/862/12doi:10.26093/cds/vizier.18620012CDSGao J.Zou H.Zhou X.Kong X.2018-07-26T12:55:52Z2018-07-26T09:02:17ZCDS support team

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

cds-question@unistra.frgalaxiesphotometryredshiftedsurveysWe publish a photometric redshift catalog based on imaging data of the South Galactic Cap u-band Sky Survey, Sloan Digital Sky Survey (SDSS), and Wide-field Infrared Survey Explorer (WISE). A total of 7 photometric bands are used, ranging from near ultraviolet to near infrared. A local linear regression method is adopted to estimate the photometric redshift with a dedicated spectroscopic training set. The photometric redshift catalog contains about 23.1 million galaxies classified by SDSS. Using the training set with redshift up to 0.8 and r-band magnitude down to 22mag, we achieve an average bias of {Delta}z_norm_=0.000228, standard deviation of {sigma}({Delta}z_norm_)=0.019, and 3{sigma} outlier rate of about 4.2%. The bias is less than 0.01 at z<0.6 and goes up to about 0.05 at z~0.8. Compared with SDSS photometric redshifts, our redshift estimations are more accurate and have less bias.2018ApJ...862...12Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/862/12CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/311 : WISE All-Sky Data Release (Cutri+ 2012)V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/862/12https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/862/12http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/862/12https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/862/12https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/862/12http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/862/12GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/862/12/scussphz (Photometric redshifts of galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/862/12/scussphz?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/862/12/scussphz?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/862/12/scussphz?GETtext/xml+votable180.050000true338.88771-0.023510.0055555555555555562/70 73 75 76 77 78 3/10 11 32 34 197 208 271 275 276 277 278 284 286 287 291 296 297 299 316 317 318 4/0 2 18 34 35 132 133 134 140 160 797 836 837 838 840 841 848 1079 1083 1095 1099 1116 1117 1118 1140 1142 1143 1159 1163 1192 1193 1195 1276 1420 1445 1446 1449 1450 2299 2300 2302 3063 3069 5/5 6 7 12 16 17 20 21 26 27 30 31 32 33 34 64 65 68 78 97 99 104 105 106 129 130 131 149 150 151 154 155 156 158 192 224 226 540 541 542 564 568 569 578 644 645 646 648 649 650 3089 3092 3093 3136 3137 3140 3141 3143 3185 3196 3197 3199 3284 3356 3357 3358 3368 3369 3370 3372 3376 3377 3396 3400 4309 4310 4311 4313 4314 4315 4325 4326 4327 4329 4330 4331 4373 4374 4375 4377 4378 4379 4389 4390 4391 4393 4394 4395 4476 4477 4478 4564 4566 4567 4629 4630 4631 4633 4634 4635 4645 4646 4647 4649 4651 4776 4777 5108 5109 5110 5112 5113 5114 5679 5684 5685 5686 5688 5689 5690 5692 5695 5738 5761 5762 5763 5764 5765 5768 5775 5779 5788 5795 5804 5806 5807 5808 5811 5812 5814 5817 5818 5819 5822 5823 5824 5834 5835 5866 5867 9179 9181 9182 9183 9191 9193 9194 9195 9206 9212 9214 9215 12247 12249 12251 12273 12274 12275 12284 12285 6/16 17 19 52 53 54 56 57 58 72 74 99 102 103 114 115 118 119 140 144 160 193 196 197 208 209 247 253 254 255 282 283 304 306 307 387 393 394 395 400 401 402 408 410 428 430 515 528 530 531 536 537 538 595 610 611 613 615 628 629 630 636 638 639 776 778 900 902 928 930 936 942 943 2172 2173 2174 2260 2264 2280 2281 2282 2284 2305 2306 2307 2308 2309 2310 2316 2336 2338 2588 2604 2608 2688 12305 12308 12309 12310 12352 12353 12380 12381 12552 12553 12556 12557 12568 12569 12597 12599 12737 12749 12751 12793 12794 12795 13140 13141 13436 13437 13438 13484 13485 13492 13493 13512 13513 13514 13516 13517 13520 13521 13522 13588 13589 13590 13592 13593 13604 13632 16895 17151 17215 17231 17235 17251 17295 17299 17315 17471 17487 17491 17507 17551 17555 17571 17916 17917 17918 18260 18262 18263 18495 18511 18515 18531 18575 18579 18601 18602 18603 19112 19113 19115 19116 19117 19119 20444 20460 20464 22635 22638 22639 22650 22651 22654 22677 22679 22684 22685 22687 22710 22711 22713 22714 22715 22748 22750 22764 22765 22766 22772 22775 22779 22946 23043 23064 23065 23066 23068 23076 23077 23078 23080 23095 23099 23104 23105 23111 23115 23156 23160 23163 23175 23176 23179 23220 23223 23236 23239 23240 23252 23254 23255 23260 23261 23262 23265 23266 23267 23280 23281 23282 23302 23304 23330 23335 23424 23425 23428 23429 23440 23456 23457 23461 23480 23482 36607 36701 36702 36703 36711 36713 36715 36721 36722 36723 36757 36758 36759 36761 36762 36763 36771 36816 36817 36818 36820 36829 36852 36854 36855 48975 48981 48983 48986 48987 48995 49001 49002 49003 49089 49091 49121 49124 49125 49148 491492.040811542443644e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/862/12?format=asciidefaultJ/ApJ/862/12/scussphzPhotometric redshifts of galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintobjIDSDSS photometric object IDmeta.idNnNumber of the neighbors used for estimating the photometric redshiftmeta.numberintNfNumber of filters having r<22mag and colors within color cutsmeta.numberintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexedzspec? Spectroscopic redshift if existsrc.redshiftfloatnullablezphotEstimated photometric redshift by the local linear regression modelsrc.redshiftfloate_zphotEstimated error for the photometric redshiftstat.errorfloatzbiasBias of the photometric redshift estimated by the neighborsstat.errorfloatzmeanAverage spectroscopic redshift of the neighborssrc.redshiftfloatzneareastSpectroscopic redshift of the nearest neighbor in the multi-dimension color spacesrc.redshift;pos.heliocentricfloatmeanDistAverage Euclidean distance of neighbors in the multi-dimension color spacepos.distancefloatu*magmod? SCUSS u-band model magnitudemagphot.mag;em.opt.Ufloatnullablee_u*magmod? SCUSS u-band model magnitude errormagstat.error;pos.cartesian.xfloatnullableumagmod? SDSS u-band model magnitudemagphot.mag;em.opt.Ufloatnullablee_umagmod? SDSS u-band model magnitude errormagstat.error;pos.cartesian.xdoublenullablegmagmod? SDSS g-band model magnitudemagphot.mag;em.opt.Bfloatnullablee_gmagmod? SDSS g-band model magnitude errormagstat.errordoublenullablermagmod? SDSS r-band model magnitudemagphot.mag;em.opt.Rfloatnullablee_rmagmod? SDSS r-band model magnitude errormagstat.errorfloatnullableimagmod? SDSS i-band model magnitudemagphot.mag;em.opt.Ifloatnullablee_imagmod? SDSS i-band model magnitude errormagstat.errordoublenullablezmagmod? SDSS z-band model magnitudemagphot.mag;em.opt.Ifloatnullablee_zmagmod? SDSS z-band model magnitude errormagstat.errordoublenullableW1magmod? WISE W 1 model magnitudemagphot.mag;meta.modelledfloatnullablee_W1magmod? WISE W1 model magnitude errormagstat.errordoublenullableW2magmod? WISE W 2 model magnitudemagphot.mag;meta.modelledfloatnullablee_W2magmod? WISE W2 model magnitude errormagstat.errordoublenullableSloanDisplay the SDSS data for this objectmeta.ref.urlchar