J/MNRAS/494/4713ivo://CDS.VizieR/J/MNRAS/494/4713doi:10.26093/cds/vizier.74944713CDSMaurya J.Joshi Y.C.2024-08-21T20:14:16Z2023-07-31T08:13:16ZCDS support team

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

cds-question@unistra.fropen-star-clustersastrometryinfrared-photometryvisible-astronomybroad-band-photometryproper-motionstrigonometric-parallaxWe present UBVR_c_I_c_ photometric study of three intermediate age open star clusters NGC381, NGC2360, and Berkeley68 (Be68). We examine the cluster membership of stars using recently released Gaia DR2 proper motions and obtain a total of 116, 332, and 264 member stars in these three clusters. The mean reddening of E(B-V)=0.36+/-0.04, 0.08+/-0.03, and 0.52+/-0.04mag is found in the direction of these clusters where we observe an anomalous reddening towards NGC381. We fitted the solar metallicity isochrones to determine age and distance of the clusters which are found to be log(Age)=8.65+/-0.05, 8.95+/-0.05, and 9.25+/-0.05yr with the respective distance of 957+/-152, 982+/-132, and 2554+/-387pc for the clusters NGC381, NGC2360, and Be68. A two-stage power law in the mass function (MF) slope is observed in the cluster NGC381, however, we observe only a single MF slope in the clusters NGC2360 and Be68. To study a possible spatial variation in the slope of MF, we estimate slopes separately in the inner and the outer regions of these clusters and notice a steeper slope in outer region. The dynamic study of these clusters reveals deficiency of low-mass stars in their inner regions suggesting the mass segregation process in all these clusters. The relaxation times of 48.5, 78.9, and 87.6Myr are obtained for the clusters NGC381, NGC2360, and Be68, respectively, which are well below to their respective ages. This suggests that all the clusters are dynamically relaxed.2020MNRAS.494.4713Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/494/4713CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/494/4713https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/494/4713http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/494/4713https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/494/4713https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/494/4713http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/494/4713GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/494/4713/be68 (Photometry and kinematics of the stars in the Berkely 68 cluster)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/494/4713/be68?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/494/4713/be68?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/494/4713/be68?GETtext/xml+votable180.050000true71.33491542.029240.005555555555555556Cone search capability for table J/MNRAS/494/4713/ngc2360 (Photometry and kinematics of the stars in the NGC 2360 cluster)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/494/4713/ngc2360?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/494/4713/ngc2360?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/494/4713/ngc2360?GETtext/xml+votable180.050000true109.60012806-15.677588890.005555555555555556Cone search capability for table J/MNRAS/494/4713/ngc381 (Photometry and kinematics of the stars in the NGC 381 cluster)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/494/4713/ngc381?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/494/4713/ngc381?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/494/4713/ngc381?GETtext/xml+votable180.050000true17.4026811161.682590.0055555555555555566/1446 3712-3713 21538-215398.650015785639275e-20 6.118840631666147e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/494/4713?format=asciiOpticalInfrareddefaultJ/MNRAS/494/4713/be68Photometry and kinematics of the stars in the Berkely 68 clusterrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDStar identifiermeta.id;meta.mainintXX pixel coordinatepixpos.cartesian.xdoubleYY pixel coordinatepixpos.cartesian.ydoubleRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainUmag? U-band magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? Error on Umagmagstat.error;phot.magfloatnullableBmag? B-band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Error on Bmagmagstat.error;phot.magfloatnullableVmag? V-band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? Error on Vmagmagstat.error;phot.magfloatnullableRmag? R-band magnitudemagphot.mag;em.opt.Rfloatnullablee_Rmag? Error on Rmagmagstat.error;phot.magfloatnullableImag? I-band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag? Error on Imagmagstat.error;phot.magfloatnullableJmag? 2MASS J-band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? Error on Jmagmagstat.error;phot.magfloatnullableHmag? 2MASS H-band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? Error on Hmagmagstat.error;phot.magfloatnullableKmag? K-band magnitude converted from 2MASS Ks-band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? Error on Kmagmagstat.error;phot.magfloatnullableplxGaia DR2 parallaxmaspos.parallax.trigdoublee_plxError on plxmasstat.error;pos.parallaxdoublepmRAProper motion in right ascension from Gaia DR2mas/yrpos.pm;pos.eq.radoublee_pmRAError on pmRAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion in declination from Gaia DR2mas/yrpos.pm;pos.eq.decdoublee_pmDEError on pmDEmas/yrstat.error;pos.pm;pos.eq.decdoublepmemb? Membership probabilitystat.probabilityfloatnullableJ/MNRAS/494/4713/ngc2360Photometry and kinematics of the stars in the NGC 2360 clusterrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDStar identifiermeta.id;meta.mainintXX pixel coordinatepixpos.cartesian.xdoubleYY pixel coordinatepixpos.cartesian.ydoubleRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainUmag? U-band magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? Error on Umagmagstat.error;phot.magfloatnullableBmag? B-band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Error on Bmagmagstat.error;phot.magfloatnullableVmag? V-band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? Error on Vmagmagstat.error;phot.magfloatnullableRmag? R-band magnitudemagphot.mag;em.opt.Rfloatnullablee_Rmag? Error on Rmagmagstat.error;phot.magfloatnullableImag? I-band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag? Error on Imagmagstat.error;phot.magfloatnullableJmag? 2MASS J-band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? Error on Jmagmagstat.error;phot.magfloatnullableHmag? 2MASS H-band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? Error on Hmagmagstat.error;phot.magfloatnullableKmag? K-band magnitude converted from 2MASS Ks-band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? Error on Kmagmagstat.error;phot.magfloatnullableplxGaia DR2 parallaxmaspos.parallax.trigdoublee_plxError on plxmasstat.error;pos.parallaxdoublepmRAProper motion in right ascension from Gaia DR2mas/yrpos.pm;pos.eq.radoublee_pmRAError on pmRAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion in declination from Gaia DR2mas/yrpos.pm;pos.eq.decdoublee_pmDEError on pmDEmas/yrstat.error;pos.pm;pos.eq.decdoublepmemb? Membership probabilitystat.probabilityfloatnullableJ/MNRAS/494/4713/ngc381Photometry and kinematics of the stars in the NGC 381 clusterIDStar identifiermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXX pixel coordinatepixpos.cartesian.xdoubleYY pixel coordinatepixpos.cartesian.ydoubleRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainUmag? U-band magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? Error on Umagmagstat.error;phot.magfloatnullableBmag? B-band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Error on Bmagmagstat.error;phot.magfloatnullableVmag? V-band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? Error on Vmagmagstat.error;phot.magfloatnullableRmag? R-band magnitudemagphot.mag;em.opt.Rfloatnullablee_Rmag? Error on Rmagmagstat.error;phot.magfloatnullableImag? I-band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag? Error on Imagmagstat.error;phot.magfloatnullableJmag? 2MASS J-band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? Error on Jmagmagstat.error;phot.magfloatnullableHmag? 2MASS H-band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? Error on Hmagmagstat.error;phot.magfloatnullableKmag? K-band magnitude converted from 2MASS Ks-band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? Error on Kmagmagstat.error;phot.magfloatnullableplxGaia DR2 parallaxmaspos.parallax.trigdoublee_plxError on plxmasstat.error;pos.parallaxdoublepmRAProper motion in right ascension from Gaia DR2mas/yrpos.pm;pos.eq.radoublee_pmRAError on pmRAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion in declination from Gaia DR2mas/yrpos.pm;pos.eq.decdoublee_pmDEError on pmDEmas/yrstat.error;pos.pm;pos.eq.decdoublepmemb? Membership probabilitystat.probabilityfloatnullable