J/AJ/124/1670ivo://CDS.VizieR/J/AJ/124/1670doi:10.26093/cds/vizier.51241670CDSMamajek E.E.Meyer M.R.Liebert J.2023-04-06T16:50:51Z2002-11-19T13:39:24ZCDS support team

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

cds-question@unistra.frstellar-associationsob-starspre-main-sequence-starsvisible-astronomyWide-band photometryinfrared-photometryx-ray-sourcesWe present results of a spectroscopic survey of X-ray and proper-motion-selected samples of late-type stars in the Lower Centaurus-Crux (LCC) and Upper Centaurus-Lupus (UCL) subgroups of the nearest OB association: Scorpius-Centaurus. The primary goals of the survey are to determine the star formation history of the OB subgroups and to assess the frequency of accreting stars in a sample dominated by "post-T Tauri" pre-main-sequence (PMS) stars. We investigate two samples: (1) proper-motion candidates from the ACT Catalog (<I/246>) and Tycho Reference Catalog (TRC, <I/250>) with X-ray counterparts in the ROSAT All-Sky Survey (RASS) Bright Source Catalog and (2) G- and K-type stars in the Hipparcos catalog found to be candidate members by de Zeeuw et al. (1999, Cat. <J/AJ/117/354>). We obtained optical spectra of 130 candidates with the Siding Spring 2.3m dual-beam spectrograph.2002AJ....124.1670Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/124/1670CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/246 : The ACT Reference Catalog (Urban+ 1997)I/259 : The Tycho-2 Catalogue (Hog+ 2000)I/250 : The Tycho Reference Catalogue (Hog+ 1998)I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)J/AJ/117/354 : OB associations from Hipparcos (de Zeeuw+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/124/1670https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/124/1670http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/124/1670https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/124/1670https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/124/1670http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/124/1670GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/124/1670/table1 (Properties of de Zeeuw et al. (1999, Cat. <J/AJ/117/354>) Sco-Cen G-K candidate members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/124/1670/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/124/1670/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/124/1670/table1?GETtext/xml+votable180.050000true176.8522917-49.88416670.005555555555555556Cone search capability for table J/AJ/124/1670/table2 (Properties of RASS-ACT/TRC candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/124/1670/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/124/1670/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/124/1670/table2?GETtext/xml+votable180.050000true164.45575-69.23330560.005555555555555556Cone search capability for table J/AJ/124/1670/table4 (LCC and UCL pre-main-sequence members from de Zeeuw et al. (1999, <J/AJ/117/354>) list)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/124/1670/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/124/1670/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/124/1670/table4?GETtext/xml+votable180.050000true176.8522917-49.88416670.005555555555555556Cone search capability for table J/AJ/124/1670/table5 (Pre-main sequence LCC & UCL RASS-ACT/TRC members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/124/1670/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/124/1670/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/124/1670/table5?GETtext/xml+votable180.050000true164.45575-69.23330560.005555555555555556Cone search capability for table J/AJ/124/1670/table6 (RASS-ACT/TRC and HIPPARCOS stars rejected as Sco-Cen members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/124/1670/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/124/1670/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/124/1670/table6?GETtext/xml+votable180.050000true173.7656667-48.83944440.0055555555555555566/37173 37919 38151 38159 41526 41528 41542 41568 41600 41625 41646-41647 41652 41658 41826 41837 41880 41946 41950 41963-41964 41973 41981 42171 42413-42415 42532 42555 42559 42571 42589 42600 42607 42613 42616-42617 42630 42634 42653 42658 42683 42688 42692 42697 42729 42735 42739 42757 42760 42766 42782 42789 42792 42800 42804 42849 42888 42890 43009 43016 43052 43058 43066 43068 43072 43086 43091 43112 43116 43123 43129 43137 43139 43142 43146 43148-43149 43162 43169 43171 43175 43180 43188 43202-43203 43206 43225 43257 43282 43287 43304 43310 43321 43339 43350 43358 43365-43366 43417 43433 43442 43489 43530 43532-43533 43535 43543 43616 44032 44034 44059 44069 44076 44101 44113 44162 442998.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/124/1670?format=asciiX-rayOpticalInfrareddefaultJ/AJ/124/1670/table1Properties of de Zeeuw et al. (1999, Cat. <J/AJ/117/354>) Sco-Cen G-K candidate membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHIP numbermeta.id;meta.mainintGroupOB group (LCC or UCL)meta.idcharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainpmRAProper motion in right ascensionmas/yrpos.pm;pos.eq.rafloate_pmRArms uncertainty on pmRAmas/yrstat.errorfloatpmDEProper motion in declinationmas/yrpos.pm;pos.eq.decfloate_pmDErms uncertainty on pmDEmas/yrstat.errorfloatVmagV magnitudemagphot.mag;em.opt.VfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-Vrms uncertainty on B-Vmagstat.errorfloatSpTypeMK spectral type from MSSsrc.spTypecharq_SpTypeQuality flag (1)meta.code.qualcharJmag2MASS J magnitudemagphot.mag;em.IR.Jfloate_Jmagrms uncertainty on Jmagmagstat.errorfloatHmag2MASS H magnitudemagphot.mag;em.IR.Hfloate_Hmagrms uncertainty on Hmagmagstat.errorfloatKsmag2MASS Ks magnitudemagphot.mag;em.IR.Kfloate_Ksmagrms uncertainty on Ksmagmagstat.errorfloatNotesNotes on variability, X-ray counterparts, and multiple star system name (CCDM) from Hipparcos. (2)meta.notecharSimbadSimbad column added by the CDSmeta.refcharJ/AJ/124/1670/table2Properties of RASS-ACT/TRC candidatesTYCThe Tycho-2 namemeta.id;meta.maincharGroupThe OB subgroupmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Hour of Right Ascension (J2000) from the TYCpos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) from the TYCpos.eq.dec;meta.mainpmRAProper motion in Right Ascension (1)mas/yrpos.pm;pos.eq.rafloate_pmRAError in pmRAmas/yrstat.errorfloatpmDEProper motion in Declinationmas/yrpos.pm;pos.eq.decfloate_pmDEError in pmDEmas/yrstat.errorfloatVmagThe V_T_ band magnitudemagphot.mag;em.opt.Vfloate_VmagError in Vmagmagstat.errorfloatB-VThe (B_T_ - V_T_) band colormagphot.color;em.opt.B;em.opt.Vfloate_B-VError in B-Vmagstat.errorfloatJmagThe 2MASS J band magnitudemagphot.mag;em.IR.Jfloate_JmagError in Jmagmagstat.errorfloatHmagThe 2MASS H band magnitudemagphot.mag;em.IR.Hfloate_HmagError in Hmagmagstat.errorfloatKsmagThe 2MASS K_s_ band magnitudemagphot.mag;em.IR.Kfloate_KsmagError in Ksmagmagstat.errorfloat1RXSThe X-ray counterpart name in RASS-BSCmeta.idcharSepThe optical - X-ray separationarcsecpos.angDistanceintXctsThe X-ray countsct/sphot.count;em.X-raydoubleHR1The Hardness ratiophot.flux;arith.ratiofloatMML? Number in table5.dat if "pre-MS" or "pre-MS?" in naturemeta.idintnullableSimbadSimbad column added by the CDSmeta.refcharJ/AJ/124/1670/table3Spectral standard starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD numbermeta.id;meta.mainintSimbadSimbad column added by the CDSmeta.refcharHR? HR numbermeta.idintnullableMKSpTypeMK spectral typesrc.spTypecharVmagV magnitudemagphot.mag;em.opt.VfloatplxTrigonometric Parallaxmaspos.parallax.trigfloate_plxrms uncertainty on plxmasstat.errorfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloat[Fe/H]? Adopted metallicity (1)Sunphys.abund.Fefloatnullableu_[Fe/H]A semicolon indicates considerable scatter (>0.2dex) in the published estimatesmeta.code.errorcharMSSpTypeMK spectral type from MSS (2)src.spTypecharSpTypeAdopted MK spectral typesrc.spTypecharNoteIndividual notes, see file "notes.dat"meta.notecharJ/AJ/124/1670/table4LCC and UCL pre-main-sequence members from de Zeeuw et al. (1999, <J/AJ/117/354>) listrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHIP numbermeta.id;meta.mainintSimbadSimbad column added by the CDSmeta.refcharGroupOB group (LCC or UCL)meta.idcharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainplxHIP trigonometric parallaxmaspos.parallax.trigfloate_plxrms uncertainty on plxmasstat.errorfloatplxkinKinematic parallaxmaspos.parallax.dynfloate_plxkinrms uncertainty on plxkinmasstat.errorfloatP1Membership probability with v_disp_=1km/s%stat.fit.goodnessintP3Membership probability with v_disp_=3km/s%stat.fit.goodnessintSpTypeMK spectral typesrc.spTypecharlogTeffEffective temperaturelog(K)phys.temperature.effectivefloate_logTeffrms uncertainty on logTefflog(K)stat.errorfloatlogLLuminositylog(solLum)phys.luminosityfloate_logLrms uncertainty on logLlog(solLum)stat.errorfloatAVExtinction in V bandmagphys.absorptionfloate_AVrms uncertainty on AVmagstat.errorfloatEW(Ha)H{alpha} {lambda}6562.8 equivalent width0.1nmspect.line.eqWidthfloatEW(Li)Li {lambda}6707.8 equivalent width0.1nmspect.line.eqWidthfloatl_logLXLimit flag on logLXmeta.code.errorcharlogLXX-ray luminosity (G1)log(1e-07W)phys.luminosity;em.X-rayfloatl_log(LX/Lbol)Limit flag on log(LX/Lbol)meta.code.errorcharlog(LX/Lbol)logarithm of ratio between X-ray and bolometric luminositiesphys.luminosity;arith.ratiofloatDM97-A? Age using D'Antona & Mazzitelli (1997MmSAI..68..807D) tracksMyrtime.ageintnullableDM97-MMass using D'Antona & Mazzitelli (1997MmSAI..68..807D) trackssolMassphys.massfloatPS01-AAge using Palla & Stahler (2001ApJ...553..299P) tracksMyrtime.ageintPS01-MMass using Palla & Stahler (2001ApJ...553..299P) trackssolMassphys.massfloatSDF00-A? Age using Siess et al. (2000A&A...358..593S) tracksMyrtime.ageintnullableSDF00-MMass using Siess et al. (2000A&A...358..593S) trackssolMassphys.massfloatPMSClassification (2)src.classcharNote[g-l] Individual notes, see "notes.dat"meta.notecharRemRemarks (SB: spectroscopic binary)meta.notecharJ/AJ/124/1670/table5Pre-main sequence LCC & UCL RASS-ACT/TRC membersTypeType (10)src.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMML[1/88] Short Identification numbermeta.idintprimaryTYCThe Tycho-2 namemeta.id;meta.maincharGroupThe OB subgroup (LCC or UCL)meta.idcharRAJ2000Hour of Right Ascension (J2000) from the TYCpos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) the TYCpos.eq.dec;meta.mainplxKinematic parallax estimate (1)maspos.parallax.dynfloate_plxError in plxmasstat.errorfloatP1Membership probability with v_disp_=1km/s%stat.fit.goodnessintP3Membership probability with v_disp_=3km/s%stat.fit.goodnessintSpTypeMK Spectral Type (2)src.spTypecharlogTeffLog of the effective temperaturelog(K)phys.temperature.effectivefloate_logTeffError in logTlog(K)stat.errorfloatlogLLog of the Luminosity (3)log(solLum)phys.luminosityfloate_logLError in logLlog(solLum)stat.errorfloatAVThe visual extinction (4)magphys.absorptionfloate_AVError in AVmagstat.errorfloatEWHaEquivalent width of H{alpha} (5)0.1nmspect.line.eqWidthfloatEWLiCorrected equivalent width of Li I (6707.8{AA}) in Angstroms (6)0.1nmspect.line.eqWidthfloatlogLXLog of the X-ray luminosity in erg/s (G1)log(1e-07W)phys.luminosity;em.X-rayfloatLX/LLog of the X-ray to bolometric luminosity ratiophys.luminosity;arith.ratiofloatDM97-A? D'Antona & Mazzitelli (1997MmSAI..68..807D) track ageMyrtime.ageintnullablef_DM97-A[N] Indicates DM97-A is not applicablemeta.code.errorcharDM97-M? D'Antona & Mazzitelli (1997MmSAI..68..807D) track masssolMassphys.massfloatnullablef_DM97-M[N] Indicates DM97-M is not applicablemeta.code.errorcharPS01-APalla & Stahler (2001ApJ...553..299P) track ageMyrtime.ageintPS01-MPalla & Stahler (2001ApJ...553..299P) track masssolMassphys.massfloatSDF00-A? Siess, Dufour, & Forestini (2000A&A...358..593S) track age (8)Myrtime.ageintnullablef_SDF00-A[N] Indicates SDF00-A is not applicablemeta.code.errorcharSDF00-MSiess, Dufour, & Forestini (2000A&A...358..593S) track mass (8)solMassphys.massfloatPMSClassification (9)src.classcharNameOther namemeta.idcharNote[m-x, ] Additional notes, see "notes.dat"meta.notecharSimbadSimbad column added by the CDSmeta.refcharJ/AJ/124/1670/table6RASS-ACT/TRC and HIPPARCOS stars rejected as Sco-Cen membersTypeType of starsrc.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameHIP or TYC namemeta.id;meta.maincharn_Name[a] Note on Name (1)meta.notecharSimbadSimbad column added by the CDSmeta.refcharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainP1Membership probability (with v_disp_=1km/s)%stat.fit.goodnessintP3Membership probability (with v_disp_=3km/s)%stat.fit.goodnessintSpTypeMK spectral typesrc.spTypecharEW(Ha)H{alpha} {lambda}6562.8 equivalent width0.1nmspect.line.eqWidthfloatEW(Li)Corrected Li {lambda}6707.8 equivalent width0.1nmspect.line.eqWidthfloatl_log(LX/Lbol)Limit flag on log(LX/Lbol)meta.code.errorcharlog(LX/Lbol)logarithm of ratio between X-ray and bolometric luminosities (G1)phys.luminosity;arith.ratiofloatJ/AJ/124/1670/notesNotesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNote[a-x] Note numbermeta.notecharprimaryTextText of notemeta.notechar