J/A+A/549/A29ivo://CDS.VizieR/J/A+A/549/A29doi:10.26093/cds/vizier.35490029CDSCioni M.-R.L.Kamath D.Rubele S.van Loon J.T.Wood P.R.,Emerson J.P.Gibson B.K.Groenewegen M.A.T.Ivanov V.D.Miszalski B.,Ripepi V.2014-02-17T14:06:10Z2013-02-27T13:51:23ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsquasarsinfrared-photometryThe number and spatial distribution of confirmed quasi-stellar objects (QSOs) behind the Magellanic system is limited. This undermines their use as astrometric reference objects for different types of studies. We have searched for criteria to identify candidate QSOs using observations from the VISTA survey of the Magellanic Clouds system (VMC) that provides photometry in the YJKs bands and 12 epochs in the Ks band. The (Y-J) versus (J-Ks) diagram has been used to distinguish QSO candidates from Milky Way stars and stars of the Magellanic Clouds. Then, the slope of variation in the Ks band has been used to identify a sample of high confidence candidates. These criteria were developed based on the properties of 117 known QSOs presently observed by the VMC survey.2013A&A...549A..29Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/549/A29CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/531/A157 : LMC planetary nebulae (VMC Survey II) (Miszalski+, 2011)J/A+A/537/A105 : Modelisation of AGB stars in the LMC (Gullieuszik+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/549/A29https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/549/A29http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/549/A29https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/549/A29https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/549/A29http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/549/A29GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/549/A29/table2 (VMC (VISTA Magellanic Clouds survey) parameters for known quasars behind the Magellanic system)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/549/A29/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/549/A29/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/549/A29/table2?GETtext/xml+votable180.050000true9.7116667-73.18150.0055555555555555566/32979 32994 33046-33047 33052-33053 33055 33063 33096 33098-33099 33120-33121 33124-33126 33293-33295 33298 33304 33306 33316-33317 33319 33328 33795 375388.643406281242892e-20 2.0372238493098756e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/549/A29?format=asciiInfrareddefaultJ/A+A/549/A29/table2VMC (VISTA Magellanic Clouds survey) parameters for known quasars behind the Magellanic systemTileVMC tile designationobs.fieldcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameQuasar namemeta.id;meta.maincharRefReference number (1)meta.idintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainYmag? VISTA Y band magnitudemagphot.mag;em.IR.Jfloatnullablee_Ymag? Y band magnitude errormagstat.error;phot.mag;em.opt.BfloatnullableJmag? VISTA J band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? J band magnitude errormagstat.error;phot.mag;em.IR.JfloatnullableKsmag? VISTA Ks band magnitudemagphot.mag;em.IR.Kfloatnullablee_Ksmag? Ks band magnitude errormagstat.error;phot.mag;em.IR.KfloatnullableClass[-3/1] Source classification flag (2)src.class.starGalaxyintQ[AB] Photometric quality flag, A=bestmeta.code.qual;phot;meta.modelledchar