J/ApJ/784/57ivo://CDS.VizieR/J/ApJ/784/57doi:10.26093/cds/vizier.17840057CDSWang P.F.Chen W.P.Lin C.C.Pandey A.K.Huang C.K.Panwar N.,Lee C.H.Tsai M.F.Tang C.-H.Goldman B.Burgett W.S.Chambers K.C.,Draper P.W.Flewelling H.Grav T.Heasley J.N.Hodapp K.W.Huber M.E.,Jedicke R.Kaiser N.Kudritzki R.-P.Luppino G.A.Lupton R.H.,Magnier E.A.Metcalfe N.Monet D.G.Morgan J.S.Onaka P.M.Price P.A.,Stubbs C.W.Sweeney W.Tonry J.L.Wainscoat R.J.Waters C.2023-02-13T15:39:10Z2016-08-05T06:23:24ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryvisible-astronomybroad-band-photometryproper-motionsMembership identification is the first step in determining the properties of a star cluster. Low-mass members in particular could be used to trace the dynamical history, such as mass segregation, stellar evaporation, or tidal stripping, of a star cluster in its Galactic environment. We identified member candidates of the intermediate-age Praesepe cluster (M44) with stellar masses ~0.11-2.4M_{sun}_, using Panoramic Survey Telescope And Rapid Response System and Two Micron All Sky Survey photometry, and PPMXL proper motions. Within a sky area of 3{deg} radius, 1040 candidates are identified, of which 96 are new inclusions. Using the same set of selection criteria on field stars, an estimated false positive rate of 16% was determined, suggesting that 872 of the candidates are true members. This most complete and reliable membership list allows us to favor the BT-Settl model over other stellar models. The cluster shows a distinct binary track above the main sequence, with a binary frequency of 20%-40%, and a high occurrence rate of similar mass pairs. The mass function is consistent with that of the disk population but shows a deficit of members below 0.3 solar masses. A clear mass segregation is evidenced, with the lowest-mass members in our sample being evaporated from this disintegrating cluster.2014ApJ...784...57Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/784/57CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/ocl : Optically visible open clusters and Candidates (Dias+ 2002-2015)V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)I/317 : The PPMXL Catalog (Roeser+ 2010)I/284 : The USNO-B1.0 Catalog (Monet+ 2003)I/257 : Proper Motions in Praesepe (Wang+, 1995)J/A+A/559/A43 : Pan-STARRS1 observations of the Hyades (Goldman+, 2013)J/MNRAS/434/3236 : Masses of Praesepe members (Khalaj+, 2013)J/MNRAS/432/62 : PS1 MDS X-ray selected galaxy clusters (Ebeling+, 2013)J/MNRAS/426/3419 : UKIDSS GCS Praesepe members (Boudreault+, 2012)J/ApJ/756/L33 : RVs of 2 hot Jupiters in Praesepe (Quinn+, 2012)J/ApJ/750/99 : The Pan-STARRS1 photometric system (Tonry+, 2012)J/AJ/142/77 : New T dwarfs identified in Pan-STARRS 1 (Deacon+, 2011)J/A+A/510/A27 : Very low mass stars in Praesepe (Boudreault+, 2010)J/MNRAS/408/2457 : Low-mass stars and brown dwarfs in Praesepe (Baker+, 2010)J/ApJ/697/1578 : A debris disk study of Praesepe (Gaspar+, 2009)J/AJ/135/907 : Variables in Praesepe identified with KELT (Pepper+, 2008)J/AJ/134/2340 : Membership of Praesepe and Coma Berenices (Kraus+, 2007)J/AJ/132/1517 : Spectroscopy of M dwarfs in Praesepe (Kafka+, 2006)J/MNRAS/342/1241 : Low-mass stars in M45 and M44 (Pinfield+, 2003)J/AZh/80/8 : Proper motions of open star clusters (Loktin+, 2003)J/AJ/124/1570 : JHKs photometry in Praesepe (Adams+, 2002)J/AJ/123/1570 : alpha Persei and Praesepe Clusters (Patience+, 2002)J/A+A/375/989 : JHK photometry of Praesepe low-mass stars (Bouvier+, 2001)J/A+A/354/881 : RVs of Praesepe & Hyades Am stars (Debernardi+ 2000)J/ApJ/521/682 : Binaries in the Praesepe and Coma clusters (Abt+, 1999)J/A+AS/129/9 : Delta Sct stars in Praesepe (Pena+ 1998)J/A+AS/109/29 : Very low mass stars in Praesepe (Hambly+, 1995)J/A+A/298/115 : ROSAT study of Praesepe (Randish+, 1995)J/AJ/109/1379 : Praesepe + M 67 spectral standards (Allen+ 1995)J/AJ/106/1080 : Lithium in Praesepe (Soderblom+, 1993)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/784/57https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/784/57http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/784/57https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/784/57https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/784/57http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/784/57GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/784/57/table1 (Member candidates of Praesepe)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/784/57/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/784/57/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/784/57/table1?GETtext/xml+votable180.050000true127.2026218.97663890.0055555555555555565/1171-1172 1174-1175 1177 1180-1181 6/4677-4679 4681 4683 4694 4705 4717 4728-4729 47328.650015785639275e-20 4.670716440110116e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/784/57?format=asciiOpticalInfrareddefaultJ/ApJ/784/57/table1Member candidates of PraeseperecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/1040] Running sequence numbermeta.id;meta.mainintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainpmRA[-45.4/-27.6] Proper motion along RA times cos(DE) ({mu}_{alpha}_cos{delta}) (1)mas/yrpos.pm;pos.eq.rafloate_pmRA[0.6/10.3] Uncertainty in pmRA (1)mas/yrstat.error;pos.pm;pos.eq.rafloatpmDE[-22.4/-5] Proper motion along DE ({mu}_{delta}_) (1)mas/yrpos.pm;pos.eq.decfloate_pmDE[0.5/17.1] Uncertainty in pmDE (1)mas/yrstat.error;pos.pm;pos.eq.decfloatPPMXLDisplay the data from the PPMXL catalog (Roeser et al. 2010, cat. I/317) within 1.5''meta.ref.urlchargmag[6.7/22.4]? Pan-STARRS g band magnitude (g_P1_) (2)magphot.mag;em.opt.Bfloatnullablee_gmag[0/0.6]? Uncertainty in gmagmagstat.error;phot.magfloatnullablermag[6.7/22]? Pan-STARRS r band magnitude (r_P1_) (2)magphot.mag;em.opt.Rfloatnullablee_rmag[0/0.6]? Uncertainty in rmagmagstat.error;phot.magfloatnullableimag[6.8/20.2]? Pan-STARRS i band magnitude (i_P1_) (2)magphot.mag;em.opt.IfloatnullableSimbadNameSimbad column added by the CDSmeta.idcharnullablee_imag[0/0.6]? Uncertainty in imagmagstat.error;phot.magfloatnullablezmag[6.9/18.3]? Pan-STARRS z band magnitude (z_P1_) (2)magphot.mag;em.opt.Ifloatnullablee_zmag[0/0.6]? Uncertainty in zmagmagstat.error;phot.magfloatnullableymag[6.9/18]? Pan-STARRS y band magnitude (y_P1_) (2)magphot.mag;em.IR.Jfloatnullablee_ymag[0/0.6]? Uncertainty in ymagmagstat.error;phot.magfloatnullableJmag[4.69/16.45]? 2MASS J band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag[0/0.24]? Uncertainty in Jmagmagstat.error;phot.magfloatnullableHmag[4.32/16.06]? 2MASS H band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag[0/10]? Uncertainty in Hmagmagstat.error;phot.magfloatnullableKmag[4.18/15.8]? 2MASS Ks band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag[0/10]? Uncertainty in Kmagmagstat.error;phot.magfloatnullable2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246) within 3''meta.ref.urlcharB[0/1] Binary system? (1=possible, or 0=not)meta.codeintNameCommon source identifier, if anymeta.idchar