J/A+A/462/123ivo://CDS.VizieR/J/A+A/462/123doi:10.26093/cds/vizier.34620123CDSPrisinzano L.Damiani F.Micela G.Pillitteri I.2017-06-20T13:16:55Z2007-07-09T20:41:49ZCDS support team

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

cds-question@unistra.fropen-star-clusterspre-main-sequence-starsspectroscopyradial-velocityMechanisms regulating the evolution of pre-main sequence stars can be understood by studying stellar properties such as rotation, disk accretion, internal mixing and binarity. To investigate such properties, we studied a sample of 332 candidate members of the massive and populous star forming region NGC 6530. We want to select cluster members by using different membership criteria, to study the properties of pre-main sequence stars with or without circumstellar disks. We use intermediate resolution spectra including the LiI6707.8{AA} line to derive radial and rotational velocities, binarity and to measure the Equivalent Width of the lithium line; these results are combined with X-ray data to study the cluster membership. Optical-IR data and H{alpha} spectra, these latter available for a subsample of our targets, are used to classify CTTS and WTTS and to compare the properties of stars with and without disks. We find a total of 237 certain members including 53 binaries. The rotational velocity distributions of stars with IR excesses are statistically different from that of stars without IR excesses, while the fraction of binaries with disks is significantly smaller than that of single stars. Stars with evidence for accretion show circumstellar disks; youth of cluster members is confirmed by the lithium abundance consistent with the initial content. As indicated by the disk-locking picture, stars with disks have in general rotational velocities lower than stars without disks. Binaries in NGC 6530 seem have undergone a significant disk evolution.2007A&A...462..123Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/462/123CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/430/941 : Star formation region NGC 6530 (Prisinzano+, 2005)J/ApJ/608/781 : NGC 6530 Chandra X-ray catalog (Damiani+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/462/123https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/462/123http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/462/123https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/462/123https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/462/123http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/462/123GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/462/123/stars (Photometric and spectrcoscopic results)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/462/123/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/462/123/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/462/123/stars?GETtext/xml+votable180.050000true271.0643333-24.29146110.0055555555555555566/28890-288918.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/462/123?format=asciiOpticaldefaultJ/A+A/462/123/starsPhotometric and spectrcoscopic resultsSpSpectrum numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainIDX? Designation from Damiani et al. (2006A&A...459..477D)meta.idintnullableWFIDesignation from Prisinzano et al. (2005, Cat. <J/A+A/430/941>, Cl* NGC 6530 WFI NNNNN in Simbad)meta.id;meta.mainintBmagLandolt B magnitude from <J/A+A/430/941>magphot.mag;em.opt.Bfloate_Bmagrms uncertainty on the Landolt B magnitudemagstat.error;phot.mag;em.opt.BfloatVmagLandolt V magnitude from <J/A+A/430/941>magphot.mag;em.opt.Vfloate_Vmagrms uncertainty on the Landolt V magnitudemagstat.error;phot.mag;em.opt.VfloatImagCousins I magnitude from <J/A+A/430/941>magphot.mag;em.opt.Ifloate_Imagrms uncertainty on the Cousins I magnitudemagstat.error;phot.mag;em.opt.IfloatJmag? J magnitude from 2MASS <II/246>magphot.mag;em.IR.Jfloatnullablee_Jmag? rms uncertainty on the J magnitudemagstat.error;phot.mag;em.IR.JfloatnullableHmag? H magnitude from 2MASS <II/246>magphot.mag;em.IR.Hfloatnullablee_Hmag? rms uncertainty on the H magnitudemagstat.error;phot.mag;em.IR.HfloatnullableKmag? K magnitude from 2MASS <II/246>magphot.mag;em.IR.Kfloatnullablee_Kmag? rms uncertainty on the K magnitudemagstat.error;phot.mag;em.IR.KfloatnullableAgeEstimated age from <J/A+A/430/941>Myrtime.agefloatMass? Estimated mass from <J/A+A/430/941>solMassphys.massfloatnullableSB2[Y] Binarity flagmeta.code.multipcharRV? Radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatnullablee_RV? rms uncertainty on RVkm/sstat.errorfloatnullablevsini? Rotational velocitykm/sphys.veloc.rotatfloatnullablee_vsini? rms uncertainty on vsinikm/sstat.error;phys.veloc.rotatfloatnullableTeffEffective Temperature from V-I color index (from <J/A+A/430/941>)Kphys.temperature.effectiveintEW(Li)? Equivalent width of the lithium line0.1nmspect.line.eqWidthfloatnullableEW2(Li)? Equivalent width of the lithium line of the second component0.1nmspect.line.eqWidthfloatnullableFWZI(Ha)? Full Width Zero Intensity of H{alpha} line0.1nmspect.line.width;em.line.HalphafloatnullableMembX[YN] Membership flag based on X-ray detectionmeta.code.membercharMembRV[YN] Membership flag based on radial velocitymeta.code.membercharMembLi[YN] Membership flag based on lithium equivalent widthmeta.code.membercharQJHHK[Y-N] IR excess flag based on the QJHHK indexmeta.codecharQVIJK[Y-N] IR excess flag based on the QVIJK indexmeta.codecharQVIIJ[Y-N] IR excess flag based on the QVIIJ indexmeta.codecharQBVJK[Y-N] IR excess flag based on the QBVJK indexmeta.codecharClass[CW ?-] CTT or WTT classification based on the H{alpha} line (1)meta.code.classcharPTProfile type of the H{alpha} line (2)meta.notecharMemb[M NM?] Membership (M=member, NM=non member)meta.code.memberchar