J/ApJ/860/65ivo://CDS.VizieR/J/ApJ/860/65doi:10.26093/cds/vizier.18600065CDSMunoz R.R.Cote P.Santana F.A.Geha M.Simon J.D.Oyarzun G.A.,Stetson P.B.Djorgovski S.G.2020-04-27T13:03:43Z2019-07-19T14:14:03ZCDS support team

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

cds-question@unistra.frvisible-astronomysloan-photometrygalaxiesWe describe a deep, systematic imaging study of satellites in the outer halo of the Milky Way. Our sample consists of 58 stellar overdensities --i.e., substructures classified as either globular clusters, classical dwarf galaxies, or ultra-faint dwarf galaxies-that are located at Galactocentric distances of R_GC_>=25kpc (outer halo) and out to ~400kpc. This includes 44 objects for which we have acquired deep, wide-field, g- and r-band imaging with the MegaCam mosaic cameras on the 3.6m Canada-France-Hawaii Telescope and the 6.5m Magellan-Clay telescope. These data are supplemented by archival imaging, or published gr photometry, for an additional 14 objects, most of which were discovered recently in the Dark Energy Survey (DES). We describe the scientific motivation for our survey, including sample selection, observing strategy, data reduction pipeline, calibration procedures, and the depth and precision of the photometry. The typical 5{sigma} point-source limiting magnitudes for our MegaCam imaging-which collectively covers an area of ~52deg^2^ --are g_lim_~25.6 and r_lim_~25.3 AB mag. These limits are comparable to those from the coadded DES images and are roughly a half-magnitude deeper than will be reached in a single visit with the Large Synoptic Survey Telescope. Our photometric catalog thus provides the deepest and most uniform photometric database of Milky Way satellites available for the foreseeable future. In other papers in this series, we have used these data to explore the blue straggler populations in these objects, their density distributions, star formation histories, scaling relations, and possible foreground structures.2018ApJ...860...65Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/860/65CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/202 : Globular Clusters in the Milky Way (Harris, 1997)II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)J/AJ/109/218 : Catalogue of globular cluster profiles (Trager+ 1995)J/ApJS/161/304 : Star clusters in Milky Way and satellites (McLaughlin+, 2005)J/A+A/466/181 : BVI photometry of Whiting 1 (Carraro+, 2007)J/ApJ/670/346 : M giant stars in Sagittarius dwarf galaxy. V. (Chou+, 2007)J/ApJ/684/1143 : BHB candidates in the Milky Way (Xue+, 2008)J/MNRAS/397/1748 : Spectroscopic study of Segue 2 (Belokurov+, 2009)J/ApJ/743/167 : Radial velocities and membership in Pal 13 (Bradford+, 2011)J/AJ/144/4 : Dwarf galaxies in the Local Group (McConnachie+, 2012)J/ApJ/803/63 : gr photometry of stars in Kim 2 (Kim+, 2015)J/ApJ/808/95 : Spectroscopy of Reticulum II (Simon+, 2015)J/AJ/154/199 : SMASH: Survey of MAgellanic Stellar History (Nidever+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/860/65https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/860/65http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/860/65https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/860/65https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/860/65http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/860/65GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/860/65/table1 (Basic parameters for outer halo objects: primary sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/860/65/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/860/65/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/860/65/table1?GETtext/xml+votable180.050000true15.0183-33.71860.005555555555555556Cone search capability for table J/ApJ/860/65/table2 (Basic parameters for outer halo objects: secondary sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/860/65/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/860/65/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/860/65/table2?GETtext/xml+votable180.050000true33.325236.17020.005555555555555556Cone search capability for table J/ApJ/860/65/table5 (Photometry of individual objects for the primary sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/860/65/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/860/65/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/860/65/table5?GETtext/xml+votable180.050000true15.06778694-33.3839650.0055555555555555565/1104 1597 1854 2186 2545 2692 2922 3008 4427 6750 6801 7034 7782 7923 6/618 619 622 704 705 708 1127 1133 1138 1144 2352 4399 4410 4422 4425 4496 4843 4846 5939 5942 5945 5946 5947 5948 6021 6023 6032 6034 6209 6212 6213 6214 6367 6560 6562 7405 7410 7411 7420 8512 8513 8738 8739 8748 9997 9999 10002 10008 10009 10010 10095 10188 10189 10190 10192 10194 10441 10443 10444 10446 10772 11519 11692 11694 11861 12036 12529 12530 12531 12532 12534 12687 12709 17099 17102 17121 17123 17124 17126 17797 18923 18926 19265 19268 19334 19434 19978 19979 20000 20001 24652 25486 26485 26486 26487 26493 26958 26980 26981 27212 27213 27215 27216 27218 27219 27224 27236 27237 27239 27248 27250 27571 27574 27575 27577 27580 27581 27846 27849 27852 28087 28092 28093 28095 28130 28361 28364 28480 28555 28577 28579 28580 28582 31122 31123 31686 31687 31689 31722 31723 33626 33685 33720 33745 33995 34316 34317 34319 34366 34809 34811 34814 35549 35551 35714 35720 35722 35883 35968 35969 35971 36177 36180 39091 39092 39094 39097 39099 39100 39102 39954 43894 43895 44084 44086 44214 44215 44220 44221 46021 46169 46290https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/860/65?format=asciiOpticaldefaultJ/ApJ/860/65/table1Basic parameters for outer halo objects: primary sampleSimbadNameSimbad column added by the CDSmeta.idcharNameObject namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/44] Running sequence numbermeta.idintNsNumber of stars for this object (link to Table 5)meta.numberintnullableONameOther name(s)meta.idcharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latdoubleE(B-V)[0.007/1.1] Reddening from Schlafly & Finkbeiner (2011ApJ...737..103S)magphot.color.excessfloatRsun[19.8/417] Heliocentric distancekpcpos.distance;pos.heliocentricfloatRgc[19.2/422.1] Galactocentric distancekpcpos.distance;pos.galactocentricfloatX[-256/85] X coordinate (1)kpcpos.cartesian.xfloatY[-222/122] Y coordinate (1)kpcpos.cartesian.yfloatZ[-298/288] Z coordinate (1)kpcpos.cartesian.zfloatRefDiscovery reference(s) (see refs.dat file)meta.ref;pos.framecharIDInternal identifier as in Table 5; column added by CDSmeta.idcharprimaryJ/ApJ/860/65/table2Basic parameters for outer halo objects: secondary sampleSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/44] Running sequence numbermeta.idintNameObject namemeta.id;meta.maincharONameOther name(s)meta.idcharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latdoubleE(B-V)[0.007/1.1] Reddening from Schlafly & Finkbeiner (2011ApJ...737..103S)magphot.color.excessfloatRsun[19.8/417] Heliocentric distancekpcpos.distance;pos.heliocentricfloatRgc[19.2/422.1] Galactocentric distancekpcpos.distance;pos.galactocentricfloatX[-256/85] X coordinate (1)kpcpos.cartesian.xfloatY[-222/122] Y coordinate (1)kpcpos.cartesian.yfloatZ[-298/288] Z coordinate (1)kpcpos.cartesian.zfloatRefDiscovery reference(s) (see refs.dat file)meta.ref;pos.framecharJ/ApJ/860/65/table5Photometry of individual objects for the primary samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDStellar overdensity internal identifiermeta.id.part;meta.maincharm_IDComponent on ID ("s" or "n") (1)meta.code.multipcharSeq[1/454940] Star identification number within the stellar overdensitymeta.id.part;meta.mainintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainindexedgmag[13.4/30.3] Calibrated g-band AB magnitude (2)magphot.mag;em.opt.Bfloate_gmag[0.0004/9] Uncertainty in gmagmagstat.error;phot.mag;em.opt.Bfloatrmag[12.4/28.6] Calibrated r-band AB magnitude (2)magphot.mag;em.opt.Rfloate_rmag[0.0004/10] Uncertainty in rmagmagstat.error;phot.mag;em.opt.RfloatchiDAOPHOT chi parameterstat.fit.chi2floatsharpDAOPHOT sharp parameterstat.fit.paramfloatJ/ApJ/860/65/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.noteintBibCodeBibcode of the referencemeta.bib.bibcodecharAuthAuthor's name(s)meta.bib.authorcharCommCommentmeta.notechar