J/ApJ/746/154ivo://CDS.VizieR/J/ApJ/746/154doi:10.26093/cds/vizier.17460154CDSPecaut M.J.Mamajek E.E.Bubar E.J.2017-06-29T08:55:31Z2013-09-26T13:57:12ZCDS support team

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

cds-question@unistra.frparallaxspectroscopystellar-spectral-typesstellar-massesstellar-associationsf-starsextinctionWe present an analysis of the ages and star formation history of the F-type stars in the Upper Scorpius (US), Upper Centaurus-Lupus (UCL), and Lower Centaurus-Crux (LCC) subgroups of Scorpius-Centaurus (Sco-Cen), the nearest OB association. Our parent sample is the kinematically selected Hipparcos sample of de Zeeuw et al. (1999, Cat. J/AJ/117/354), restricted to the 138 F-type members. We have obtained classification-resolution optical spectra and have also determined the spectroscopic accretion disk fraction. With Hipparcos and 2MASS photometry, we estimate the reddening and extinction for each star and place the candidate members on a theoretical H-R diagram. For each subgroup we construct empirical isochrones and compare to published evolutionary tracks.2012ApJ...746..154Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/746/154CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)I/259 : The Tycho-2 Catalogue (Hog+ 2000)J/AJ/144/8 : Spectroscopy of ~100 G/K/M-type Sco-Cen members (Song+, 2012)J/ApJ/745/56 : Upper Sco members rotational velocities (Dahm+, 2012)J/A+A/527/A24 : Spectra of low-mass stars in Upper Sco (Lodieu+, 2011)J/A+A/504/981 : Proper motions of cool stars in Upper Sco OB (Bouy+, 2009)J/PAZh/33/643 : Kinematics of Sco-Cen OB Association (Bobylev+, 2007)J/MNRAS/373/95 : ZYJHK survey of Upper Sco association (Lodieu+, 2006)J/AJ/121/1040 : PMS members of upper Sco OB association (Preibisch+, 2001)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/ApJ/746/154https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/746/154http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/746/154https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/746/154https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/746/154http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/746/154GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/746/154/catalog (Sco-Cen candidate members: observations and stellar parameters (for F-stars))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/746/154/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/746/154/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/746/154/catalog?GETtext/xml+votable180.050000true169.9698333-70.61847220.0055555555555555566/29320 29348 37149 37187 37197 37905 37953 37968 37972 37973 37974 41618 41657 41661 41677 41683 41704 41707 41710 41711 41897 41900 41906 41915 41937 41946 42174 42220 42233 42419 42429 42466 42548 42559 42563 42585 42613 42620 42651 42654 42672 42677 42678 42685 42694 42698 42707 42711 42715 42725 42727 42728 42746 42749 42857 42858 42876 42886 42917 42941 42943 42953 42960 42990 43017 43019 43021 43029 43037 43054 43055 43057 43059 43073 43094 43133 43136 43147 43150 43161 43166 43168 43169 43182 43183 43189 43192 43196 43197 43201 43202 43206 43208 43210 43224 43232 43244 43246 43272 43274 43298 43337 43338 43352 43355 43358 43360 43361 43492 43522 43527 43529 43541 43557 43564 44033 44052 44059 44078 44093 44106 44114 44132 44156 44352 44357 44359 44361 44365 44368 44376 44384 443938.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/746/154?format=asciiOpticaldefaultJ/ApJ/746/154/catalogSco-Cen candidate members: observations and stellar parameters (for F-stars)Age4[5,39]? Age (2)time.ageintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHIP numbermeta.id;meta.mainintprimaryGrpSubgroup (LCC, UCL, US) (G1)meta.id.parentchar2MASS2MASS identification (HHMMSSss+DDMMSSs)meta.idcharpmRA[-43.28,-6] Proper motion along RA ({mu}_{alpha}*_) (1)mas/yrpos.pm;pos.eq.rafloate_pmRA[0.42,2.57] pmRA uncertainty (1)mas/yrstat.error;pos.pm;pos.eq.rafloatpmDE[-35.2,4.41] Proper motion along DEC (1)mas/yrpos.pm;pos.eq.decfloate_pmDE[0.33,2.3] pmDE uncertainty (1)mas/yrstat.error;pos.pm;pos.eq.decfloatVmag[6.62,10.57] Hipparcos V-band magnitudemagphot.mag;em.opt.VfloatB-V[0.23,0.755] Hipparcos B-V color indexmagphot.color;em.opt.B;em.opt.Vfloate_B-V[0.001,0.495] B-V uncertaintymagstat.error;phot.color;em.opt.BfloatJmag[5.688,9.836] 2MASS J-band magnitudemagphot.mag;em.IR.Jfloate_Jmag[0.018,0.056] Jmag uncertaintymagstat.error;phot.mag;em.IR.JfloatHmag[5.459,9.729] 2MASS H-band magnitudemagphot.mag;em.IR.Hfloate_Hmag[0.021,0.069] Hmag uncertaintymagstat.error;phot.mag;em.IR.HfloatKsmag[5.326,9.653] 2MASS Ks-band magnitudemagphot.mag;em.IR.Kfloate_Ksmag[0.016,0.038] Ksmag uncertaintymagstat.error;phot.mag;em.IR.Kfloatr_pm[HT] PM reference (1)meta.ref;pos.framecharTCross-match within 1.5" with the Tycho-2 catalog (Cat. I/259)meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.refcharSpTMK spectral type from this work (section 4.1)src.spTypecharnullablepKin[4.6,12.7] Kinematic parallax (section 4.3)maspos.parallax.dynfloatnullablee_pKin[0.38,0.96] pKin uncertaintymasstat.errorfloatnullableEWHa[-1.9,6.7] H{alpha} equivalent width0.1nmspect.line.eqWidth;em.line.HalphafloatnullableAv[0,1] Extinction (section 4.2)magphys.absorptionfloatnullablee_Av[0.01,0.4] Av uncertaintymagstat.errorfloatnullablelogTe[3.781,3.872] Log of effective temperaturelog(K)phys.temperature.effectivefloatnullablee_logTe[0.005,0.017] logTe uncertainty (1)log(K)stat.errorfloatnullablelogL[0.23,1.18] Luminosity (log(L/L_{sun}_))log(solLum)phys.luminosityfloatnullablee_logL[0.05,0.18] logL uncertaintylog(solLum)stat.errorfloatnullableM1[1.1,2] Mass from D08 (2)solMassphys.massfloatnullablef_M1[a] Assumed age (15Myr) (3)meta.codecharnullablel_Age1Limit flag on Age (4)meta.code.errorcharnullableAge1[5,32] Age from D08 (2)Myrtime.ageintnullableM2[1.2,2] Mass (2)solMassphys.massfloatnullablef_M2[a] Assumed age (15Myr) (3)meta.codecharnullablel_Age2Limit flag on Age2 (4)meta.code.errorcharnullableAge2[5,83]? Age (2)Myrtime.ageintnullableM3[1.3,2] Mass (2)solMassphys.massfloatnullablef_M3[ab] Assumed age (15 or 10Myr) (3)meta.codecharnullablel_Age3Limit flag on Age3 (4)meta.code.errorcharnullableAge3[7,62]? Age (2)Myrtime.ageintnullableM4[1.2,2] Mass (2)phys.massfloatnullablef_M4[ab] Assumed age (15 or 10Myr) (3)meta.codecharnullablel_Age4Limit flag on Age4 (4)meta.code.errorcharnullableM[1.2,2] Median mass (5)solMassphys.massfloatnullable_RAPositions from 2MASS names (right ascension part)degpos.eq.ra;meta.main_DEPositions from 2MASS names (declination part)degpos.eq.dec;meta.main