J/ApJ/866/12ivo://CDS.VizieR/J/ApJ/866/12doi:10.26093/cds/vizier.18660012CDSMinniti D.Schlafly E.F.Palma T.Claria J.J.Hempel M.,Alonso-Garcia J.Bica E.Bonatto C.Braga V.F.Clementini G.,Garofalo A.Gomez M.Ivanov V.D.Lucas P.W.Pullen J.Saito R.K.,Smith L.C.2020-03-26T14:16:54Z2019-10-14T09:25:50ZCDS support team

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

cds-question@unistra.frinfrared-photometryvisible-astronomybroad-band-photometryglobular-star-clustersWe use deep near-IR photometry of the VISTA Variables in the Via Lactea (VVV) Survey and deep DECam Plane Survey (DECaPS) optical photometry to confirm the physical reality of the candidate globular cluster (GC) Minni 22, which is located in the Galactic bulge. This object, which was detected as a high density region in our maps of bulge red giants, is now confirmed as a real GC based on the optical and near-IR color-magnitude diagrams. We also recover three known fundamental mode (ab type) RR Lyrae stars within 2 arcmin of the cluster center. The presence of RR Lyrae stars also seems to confirm Minni 22 as a bonafide old and metal-poor GC. We estimate a cluster reddening E(J-Ks)=0.6mag and determine its heliocentric distance D=7.4+/-0.3kpc. The optical and near-IR color-magnitude diagrams reveal well-defined red giant branches in all cases, including a red giant branch bump at Ks=13.30+/-0.05mag. The comparison with theoretical isochrones yields a mean metallicity of [Fe/H]=-1.3+/-0.3dex, and age of t~11.2Gyr. This is a good example of a new low-luminosity (M_V_=-6.2mag) GC found in the central bulge of the Milky Way. After discussing the different ways to confirm the existence of bulge GC candidates, we find that one of the best methods is to use the CMDs from the combination of the DECaPS+VVV photometries.2018ApJ...866...12Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/866/12CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/337 : VISTA Variables in the Via Lactea Survey DR1 (Saito+, 2012)J/A+A/303/468 : Spectrospcopy, IR-photom. in GCs (Minniti, 1995)J/MNRAS/351/1204 : IR Photometry of 10 Galactic GCs (Valenti+, 2004)J/A+A/523/A48 : Gaia photometry (Jordi+, 2010)J/MNRAS/402/1729 : JHK photometry of 36 Galactic GCs (Valenti+ 2010)J/AJ/149/99 : VVV GCs. I. 2MASS-GC02, Terzan 10 (Alonso-Garcia+, 2015)J/ApJ/807/127 : 70 RR Lyrae stars in the LMC bar (Muraveva+, 2015)J/other/NewA/49.50 : New Variables in 3 Galactic open clusters (Palma+, 2016)J/A+A/604/A120 : omega Cen RR Lyrae and SX Phoenicis stars (Navarrete+, 2017)J/A+A/616/A10 : Open clusters GaiaDR2 HR diagrams (Gaia Collaboration, 2018)http://decaps.skymaps.info/ : The DECam Plane Survey home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/866/12https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/866/12http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/866/12https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/866/12https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/866/12http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/866/12GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/866/12/table2 (The combined VVV-DECaPS multicolor photometry)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/866/12/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/866/12/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/866/12/table2?GETtext/xml+votable180.050000true267.2260875-33.13860250.0055555555555555566/287198.643406281242892e-20 4.973527819473193e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/866/12?format=asciiOpticalInfrareddefaultJ/ApJ/866/12/table2The combined VVV-DECaPS multicolor photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[267/267.4] Right Ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000[-33.2/-32.9] Declination (J2000)degpos.eq.dec;meta.mainindexedZmag[12.4/20.8]? VVV Survey Z band magnitude (1)magphot.mag;em.opt.IfloatnullableYmagV[12.6/20.3]? VVV Survey Y band magnitude (1)magphot.mag;em.IR.JfloatnullableJmag[12.4/19.5]? VVV Survey J band magnitude (1)magphot.mag;em.IR.JfloatnullableHmag[12/18.7]? VVV Survey H band magnitude (1)magphot.mag;em.IR.HfloatnullableKsmag[11.4/18.1] VVV Survey Ks band magnitudemagphot.mag;em.IR.Kfloatgmag[15/24.5]? DECaPS survey g band magnitude (1)magphot.mag;em.opt.Bfloatnullablermag[14.2/25.5]? DECaPS survey r band magnitude (1)magphot.mag;em.opt.Rfloatnullableimag[13.8/27.3]? DECaPS survey i band magnitude (1)magphot.mag;em.opt.Ifloatnullablezmag[13/25.5]? DECaPS survey z band magnitude (1)magphot.mag;em.opt.IfloatnullableYmagD[13.5/24.6]? DECaPS survey Y band magnitude (1)magphot.mag;em.IR.Jfloatnullable