J/AJ/147/76ivo://CDS.VizieR/J/AJ/147/76doi:10.26093/cds/vizier.51470076CDSBochanski J.J.Willman B.West A.A.Strader J.Chomiuk L.2014-09-25T11:29:42Z2014-09-10T16:23:02ZCDS support team

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

cds-question@unistra.frmilky-way-galaxym-starsgiant-starsvisible-astronomysloan-photometryinfrared-photometryWe present a new catalog of 404 M giant candidates found in the UKIRT Infrared Deep Sky Survey (UKIDSS). The 2400deg^2^ available in the UKIDSS Large Area Survey Data Release 8 resolve M giants through a volume four times larger than that of the entire Two Micron All Sky Survey. Combining near-infrared photometry with optical photometry and proper motions from the Sloan Digital Sky Survey yields an M giant candidate catalog with less M dwarf and quasar contamination than previous searches for similarly distant M giants. Extensive follow-up spectroscopy of this sample will yield the first map of our Galaxy's outermost reaches over a large area of sky. Our initial spectroscopic follow-up of ~30 bright candidates yielded the positive identification of five M giants at distances ~20-90kpc. Each of these confirmed M giants have positions and velocities consistent with the Sagittarius stream. The fainter M giant candidates in our sample have estimated photometric distances ~200kpc (assuming [Fe/H]=0.0), but require further spectroscopic verification. The photometric distance estimates extend beyond the Milky Way's virial radius, and increase by ~50% for each 0.5dex decrease in assumed [Fe/H]. Given the number of M giant candidates, initial selection efficiency, and volume surveyed, we loosely estimate that at least one additional Sagittarius-like accretion event could have contributed to the hierarchical build-up of the Milky Way's outer halo.2014AJ....147...76Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/147/76CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)J/AJ/143/128 : High-metallicity M giant candidates from SDSS (Palladino+, 2012)http://surveys.roe.ac.uk/wsa/ : UKIDSS online datahttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/147/76https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/147/76http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/147/76https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/147/76https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/147/76http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/147/76GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/147/76/table2 (SDSS and UKIDSS photometry of M giant candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/147/76/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/147/76/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/147/76/table2?GETtext/xml+votable180.050000true0.5697611.925840.0055555555555555566/22 25 28 640 4096 4099 4100 4107 4113 4119 4128 4129 4130 4132 4146 4152 4189 4201 4202 4204 4229 4233 4237 4243 4785 4786 4799 4815 4825 4826 4842 4854 4858 4922 4998 5002 5024 5025 5032 5057 6160 6168 6170 6171 6173 6175 6195 6196 6197 6198 6208 6213 6214 6227 6240 8198 8201 8202 8204 8210 8219 8226 8229 8236 8272 8294 8301 8302 8346 8354 8355 8363 8392 8723 9158 9256 9345 9377 9380 12289 17753 17762 17812 17821 17835 18004 18009 18021 18066 18092 18104 18140 18167 18169 18174 18221 18233 18243 18246 18248 18256 18305 18309 18337 18339 18382 18387 18397 18403 18413 18416 18792 18801 18840 18844 18853 18855 18858 18864 18879 18888 18913 18929 18934 18937 19005 19028 19030 19033 19035 19036 19038 19041 19042 19046 19048 19049 19051 19052 19057 19086 19094 19097 19100 19101 19107 19112 19115 19116 19118 19138 19207 19213 19221 19223 19224 19225 19235 19237 19238 19241 19242 19243 19244 19245 19248 19251 19254 19258 19267 19270 19274 19283 19285 19288 19292 19294 19318 19456 19466 19492 19512 19530 19531 19532 19588 19589 19590 19592 19593 19596 19599 19603 19605 19608 19629 19648 19654 19669 19690 19727 19729 19734 19736 19737 19750 19753 19755 19756 19784 19980 19993 20004 21830 21834 21841 21848 21850 21856 21862 21863 21865 21866 21880 21881 21971 21973 21977 22006 22012 23139 23145 23192 23196 23246 25591 25854 25934 25938 25940 25942 25943 25944 25946 25948 25963 25964 25973 25978 25983 25997 26015 26017 26018 26019 26050 26066 26067 26070 26108 26171 26193 26196 26215 26233 26278 26283 26288 26431 26511 26543 26943 26977 26978 26983 26987 27042 27049 27071 27075 27078 27098 27135 27197 27199 27209 27219 27226 27243 27252 27275 27276 27282 27283 27291 27296 27302 27305 27306 27310 27330 27334 27335 27338 27346 27353 27359 27376 27377 27400 27407 27439 27482 27529 27549 27580 27588 27651 27656 27658 27666 27667 27690 27698 27777 27862 27934 31287 31294 31374 31376 31377 31379 31380 31382 31384 31385 31399 31400 31405 31410 31411 31412 31414 31417 31424 31428 31430 31433 31434 31437 31439 31460 31464 31475 31486 45046 491518.305533028865447e-20 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/147/76?format=asciiOpticalInfrareddefaultJ/AJ/147/76/table2SDSS and UKIDSS photometry of M giant candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintULASM giant candidate identifier (1)meta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainumagSDSS u band magnitudemagphot.mag;em.opt.Ufloate_umagThe 1{sigma} error in umagmagstat.error;phot.mag;em.opt.UfloatgmagSDSS g band magnitudemagphot.mag;em.opt.Bfloate_gmagThe 1{sigma} error in gmagmagstat.error;phot.mag;em.opt.BfloatrmagSDSS r band magnitudemagphot.mag;em.opt.Rfloate_rmagThe 1{sigma} error in rmagmagstat.error;phot.mag;em.opt.RfloatimagSDSS i band magnitudemagphot.mag;em.opt.Ifloate_imagThe 1{sigma} error in imagmagstat.error;phot.mag;em.opt.IfloatzmagSDSS z band magnitudemagphot.mag;em.opt.Ifloate_zmagThe 1{sigma} error in zmagmagstat.error;phot.mag;em.opt.IfloatJmagUKIDSS J band magnitudemagphot.mag;em.IR.Jfloate_JmagThe 1{sigma} error in Jmagmagstat.error;phot.mag;em.IR.JfloatHmagUKIDSS H band magnitudemagphot.mag;em.IR.Hfloate_HmagThe 1{sigma} error in Hmagmagstat.error;phot.mag;em.IR.HfloatKmagUKIDSS K band magnitudemagphot.mag;em.IR.Kfloate_KmagThe 1{sigma} error in Kmagmagstat.error;phot.mag;em.IR.KfloatSDSSDisplay the data from the photometric SDSS-DR9 catalog within 1.5"meta.ref.urlcharUKIDSSDisplay the data from the UKIDSS-DR9 Large Area Survey catalog (Lawrence et al., 2012, cat. II/319) within 1.5"meta.ref.urlcharSloanDisplay the SDSS data for this M giant candidatemeta.ref.urlchar