J/MNRAS/496/2021ivo://CDS.VizieR/J/MNRAS/496/2021doi:10.26093/cds/vizier.74962021CDSFerreira F.A.Corradi W.J.B.Maia F.F.S.Angelo M.S.Santos J.F.C.Jr.2024-08-21T20:15:12Z2020-07-03T15:53:51ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyopen-star-clustersvisible-astronomytrigonometric-parallaxproper-motionsgalaxy-classification-systemsWe report the discovery of 25 new open clusters resulting from a search in dense low galactic latitude fields. We also provide, for the first time, structural and astrophysical parameters for the new findings and 34 other recently discovered open clusters using Gaia DR2 data. The candidates were confirmed by jointly inspecting the vector point diagrams and spatial distribution. The discoveries were validated by matching near known objects and comparing their mean astrometric parameters with the available literature. A decontamination algorithm was applied to the three-dimensional astrometric space to derive membership likelihoods for clusters stars. By rejecting stars with low membership likelihoods, we built decontaminated colour-magnitude diagrams and derived the clusters astrophysical parameters by isochrone fitting. The structural parameters were also derived by King-profile fittings over the stellar distributions. The investigated clusters are mainly located within 3kpc from the Sun, with ages ranging from 30Myr to 3.2Gyr and reddening limited to E(B-V)=2.5. On average, our cluster sample presents less concentrated structures than Gaia DR2 confirmed clusters, since the derived core radii are larger while the tidal radii are not significantly different. Most of them are located in the IV quadrant of the Galactic disc at low latitudes, therefore they are immersed in dense fields characteristic of the inner Milky Way.2020MNRAS.496.2021Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/496/2021CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)J/A+A/627/A35 : New open clusters in Galactic anti-centre (Castro-Ginard+ 2019)J/A+A/635/A45 : 570 new open clusters in Galactic disc (Castro-Ginard+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/496/2021https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/496/2021http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/496/2021https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/496/2021https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/496/2021http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/496/2021GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/496/2021/param (Clusters parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/496/2021/param?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/496/2021/param?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/496/2021/param?GETtext/xml+votable180.050000true272.993-22.9810.005555555555555556Cone search capability for table J/MNRAS/496/2021/members (Clusters memberlists)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/496/2021/members?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/496/2021/members?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/496/2021/members?GETtext/xml+votable180.050000true273.0868826-23.12419840.0055555555555555565/10420 6/14598 28813 28824-28825 28827-28828 28830 28872 28874 28884 28893 28895 28985 30640 30647 30690 37350 37895 37901 37906 39366-39367 39376 41465-41467 41470 41596 41651 41654 41663 41690 41692-41693 41697 41752-41754 41795 41798 41802 41808 41810-41811 41829 41831 41860 41872-41873 42111 42127 42149-42151 42156-42158 42162 42168 42171 42204 42230-42231 42282 42351 42363 42366 42373-42375 42378 42380-42381 42384 42386 42392-42393 42400 42447 42469 42500 42565 43014 43026 43032https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/496/2021?format=asciiOpticaldefaultJ/MNRAS/496/2021/paramClusters parameterse_pmDEclStandard deviation of pmde of members over square root of Nmembmas/yrstat.error;pos.pm;pos.eq.decfloatplxclMean parallax of membersmaspos.parallax;stat.meanfloats_plxclStandard deviation of plx of membersmasstat.stdev;pos.parallaxfloats_plxcl01Standard deviation of plx of members added in quadrature a systematic uncertainty of 0.1masmasstat.stdev;pos.parallaxfloate_plxcl01Standard deviation (s_plxcl01) of plx of members over square root of Nmembmasstat.errorfloatNmembNumber of cluster membersmeta.numberintXgcPosition X in Galactic cartesian coordinates according to the Galactic center positionkpcpos.distance;pos.cartesian.x;pos.galacticdoubleXPosition X in Galactic cartesian coordinateskpcpos.distance;pos.cartesian.x;pos.galacticdoubleYPosition Y in Galactic cartesian coordinateskpcpos.distance;pos.cartesian.y;pos.galacticdoubleZPosition Z in Galactic cartesian coordinateskpcpos.distance;pos.cartesian.z;pos.galacticdoubleRgcDistance from Galactic centre assuming the Sun is at 8340pckpcpos.distancedoubleSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster UFMG name (UFMGNN, UFMG4-UFMG62)meta.id;meta.maincharSim2019? Cluster name according to Sim et al., 2019JKAS...52..145Smeta.idintnullableLiu2019? Cluster name according to Liu et al., 2019ApJS..245...32Lmeta.idintnullableCG2020Cluster name according to Castro-Ginard et al. (2020, Cat. J/A+A/635/A45)meta.idcharRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainGLONCluster galactic longitudedegpos.galactic.lonGLATCluster galactic latitudedegpos.galactic.latdoubleDistDistance in pcpcpos.distanceinte_DistDistance uncertainty in pcpcstat.errorintm-MDistance modulusphot.mag.distModfloate_m-MDistance modulus uncertaintystat.errorfloatlogtAgelog(yr)time.agefloate_logtAge uncertaintylog(yr)stat.errorfloatE(B-V)Colour excessmagphot.color.excessfloate_E(B-V)Colour excess uncertaintymagstat.errorfloatrlimLimiting radius in seconds of arc, defined as the radius where the stellar density reaches the sky levelarcsecphys.angSize;srcinte_rlimLimiting radius uncertaintyarcsecstat.errorintrcCore radius in seconds of arcarcsecphys.angSize;srcinte_rcCore radius in seconds of arc uncertaintyarcsecstat.errorintrc-pcCore radius in pcpcphys.size.radiusfloate_rc-pcCore radius in pc uncertaintypcstat.errorfloatrtTidal radius in seconds of arcarcsecphys.angSize;srcinte_rtTidal radius in seconds of arc uncertaintyarcsecstat.errorintrt-pcTidal radius in pcpcphys.size.radiusfloate_rt-pcTidal radius in pc uncertaintypcstat.errorfloatpmRAclMean proper motion along RA of members, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloats_pmRAclStandard deviation of pmra of membersmas/yrstat.stdevfloate_pmRAclStandard deviation of pmra of members over square root of Nmembersmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEclMean proper motion along DE of membersmas/yrpos.pm;pos.eq.decfloats_pmDEclStandard deviation of pmde of membersmas/yrstat.stdevfloatJ/MNRAS/496/2021/membersClusters memberlistsGmagG-band mean magnitude (Vega)magphot.mag;em.optfloate_GmagStandard error of G-band mean magnitude (Vega)magstat.error;phot.magdoubleBPmagIntegrated BP mean magnitude (Vega)magphot.mag;em.opt.Bfloate_BPmagStandard error of BP mean magnitude (Vega)magstat.error;phot.magdoubleRPmagIntegrated RP mean magnitude (Vega)magphot.mag;em.opt.Rfloate_RPmagStandard error of RP mean magnitude (Vega)magstat.error;phot.magdoublechi2AL chi-square valuestat.valuefloatNgALNumber of good observations ALmeta.numberfloatE(BP/RP)BP/RP excess factorarith.factorfloatNperNumber of visibility periods used in Astrometric solutionmeta.numberfloatpmRApmDECcorCorrelation between proper motion in RA and proper motion in DEstat.correlationdoubleplxpmRAcorCorrelation between parallax and proper motion in right ascensionstat.correlationdoubleplxpmDECcorCorrelation between parallax and proper motion in declinationstat.correlationdoublepastromMembership probabilitystat.probabilitydoublefmemb[1] Flag membermeta.code.memberintNameUFMG cluster name (UFMGNN, UFMG4-UFMG62)meta.id.parentcharPlxAbsolute stellar parallaxmaspos.parallaxfloat_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSRight ascension (ICRS) at Ep=2015.5degpos.eq.ra;meta.mainSimbadNameSimbad column added by the CDSmeta.idcharnullableDE_ICRSDeclination (ICRS) at Ep=2015.5degpos.eq.dec;meta.maine_PlxStandard error of parallaxmasstat.error;pos.parallaxfloatpmRAProper motion in right ascension direction, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloate_pmRAStandard error of proper motion in right ascensionmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in declination directionmas/yrpos.pm;pos.eq.decfloate_pmDEStandard error of proper motion in declinationmas/yrstat.error;pos.pm;pos.eq.decfloat