J/ApJ/893/47ivo://CDS.VizieR/J/ApJ/893/47doi:10.26093/cds/vizier.18930047CDSDrlica-Wagner A.Bechtol K.Mau S.McNanna M.Nadler E.O.Pace A.B.,Li T.S.Pieres A.Rozo E.Simon J.D.Walker A.R.Wechsler R.H.,Abbott T.M.C.Allam S.Annis J.Bertin E.Brooks D.Burke D.L.,Carnero Rosell A.Carrasco Kind M.Carretero J.Costanzi M.,Da Costa L.N.De Vicente J.Desai S.Diehl H.T.Doel P.Eifler T.F.,Everett S.Flaugher B.Frieman J.Garcia-Bellido J.Gaztanaga E.,Gruen D.Gruendl R.A.Gschwend J.Gutierrez G.Honscheid K.,James D.J.Krause E.Kuehn K.Kuropatkin N.Lahav O.Maia M.A.G.,Marshall J.L.Melchior P.Menanteau F.Miquel R.Palmese A.,Plazas A.A.Sanchez E.Scarpine V.Schubnell M.Serrano S.,Sevilla-Noarbe I.Smith M.Suchyta E.Tarle G.(the DES Collaboration)2023-08-16T13:36:49Z2021-10-04T08:18:12ZCDS support team

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

cds-question@unistra.frmilky-way-galaxygalaxiesphotometrysurveysabsolute-magnitudevisible-astronomybroad-band-photometryWe report the results of a systematic search for ultra-faint Milky Way satellite galaxies using data from the Dark Energy Survey (DES) and Pan-STARRS1 (PS1). Together, DES and PS1 provide multi-band photometry in optical/near-infrared wavelengths over ~80% of the sky. Our search for satellite galaxies targets ~25000deg^2^ of the high-Galactic-latitude sky reaching a 10{sigma} point-source depth of >~22.5mag in the g and r bands. While satellite galaxy searches have been performed independently on DES and PS1 before, this is the first time that a self-consistent search is performed across both data sets. We do not detect any new high-significance satellite galaxy candidates, recovering the majority of satellites previously detected in surveys of comparable depth. We characterize the sensitivity of our search using a large set of simulated satellites injected into the survey data. We use these simulations to derive both analytic and machine-learning models that accurately predict the detectability of Milky Way satellites as a function of their distance, size, luminosity, and location on the sky. To demonstrate the utility of this observational selection function, we calculate the luminosity function of Milky Way satellite galaxies, assuming that the known population of satellite galaxies is representative of the underlying distribution. We provide access to our observational selection function to facilitate comparisons with cosmological models of galaxy formation and evolution.2020ApJ...893...47Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/893/47CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/4 : Abell and Zwicky Clusters of Galaxies (Abell+ 1974)VII/195 : Globular Clusters in the Milky Way (Harris, 1996)VII/202 : Globular Clusters in the Milky Way (Harris, 1997)VII/239 : History and Accurate Positions for the NGC/IC Objects (Corwin, 2004)II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+, 2016)II/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)J/MNRAS/389/678 : Extended objects in Magellanic Clouds (Bica+, 2008)J/MNRAS/397/1748 : Spectroscopic study of Segue 2 (Belokurov+, 2009)J/AJ/144/4 : Dwarf galaxies in the Local Group (McConnachie+, 2012)J/ApJ/746/178 : The augmented maxBCG cluster catalog (Rykoff+, 2012)J/ApJ/750/99 : The Pan-STARRS1 photometric system (Tonry+, 2012)J/A+A/558/A53 : MW global survey of star clusters. II. (Kharchenko+, 2013)J/ApJ/776/80 : PAndAS view of Andromeda satellites. I. (Martin+, 2013)J/ApJ/780/59 : The Araucaria project: EBs in SMC (Graczyk+, 2014)J/ApJ/789/147 : Star formation histories of LG dwarf galaxies (Weisz+, 2014)J/ApJ/803/63 : gr photometry of stars in Kim 2 (Kim+, 2015)J/ApJ/863/25 : Deep Megacam obs. of 4 MW satellites (Mutlu-Pakdil+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/893/47https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/893/47http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/893/47https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/893/47https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/893/47http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/893/47GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/893/47/table2 (Confirmed and candidate Milky Way satellites)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/893/47/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/893/47/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/893/47/table2?GETtext/xml+votable180.050000true143.8868-36.76730.0055555555555555566/619 2352 4419 5939 6021 7416 8745 9887 10183 10308 10444 10769 11655 11691 16735 17708 17872 18538 18926 19239 20664 24652 25180 25486 25599 26487 26980 27000 27207 27580 28136 28361 31692 32916 33096 33257 33295 33626 33685 33745 33995 34366 34858 35720 35969 37615 38625 38939 39100 43671 46021 46089 46144 46169 46212 46290 46621 47425 48035 48771https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/893/47?format=asciiOpticaldefaultJ/ApJ/893/47/table2Confirmed and candidate Milky Way satellitesl_ellLimit flag on ellmeta.code.errorcharClassSystem classification number (2)meta.code.classintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSatellite identifier (1)meta.id;meta.maincharprimarySurveySurvey where system residesmeta.notecharRDisplay data for this satellite from DES and/or PS1meta.ref.urlcharDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainm-MPublished distance modulusmagphot.mag.distModfloatahSemi-major axis (3)arcminphys.angSize;srcfloatSimbadNameSimbad column added by the CDSmeta.idcharnullableNEDNED column added by the CDSmeta.ref.urlcharellEllipticity; 1-b/asrc.ellipticityfloatDistDerived heliocentric distancekpcpos.distanceintr1/2Azimuthally averaged physical half-light radiuspcphys.size.radiusintVMagPublished absolute V band magnitudemagphys.magAbsfloatRefLiterature reference code(s) (4)pos.framecharJ/ApJ/893/47/recovRecovery of confirmed and candidate Milky Way satellite galaxies in DES Y3A2 (Table 3) and PS1 DR1 (Table 4)NameSatellite identifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSurveyRecovery from DES Y3A2 (Table 3) or PS1 DR1 (Table 4)meta.idcharf_Name[ab] Flag on Name (1)meta.codecharSetStatistical sample code (2)meta.idintsqrtTS? Square root of ugali search test statistic (3)stat.fit.paramfloatnullableSig? Statistical significance value from simple searchstat.variance;stat.valuefloatnullablePdetDetection probability from survey selection functionstat.fit.goodnessfloatDistDerived heliocentric distance (4)kpcpos.distanceintr1/2Azimuthally averaged physical half-light radius (4)pcphys.size.radiusintVMagPublished absolute V band magnitudemagphys.magAbsfloatrhoLocal stellar densityarcmin**-2src.densityfloat