J/A+A/320/185ivo://CDS.VizieR/J/A+A/320/185doi:10.26093/cds/vizier.33200185CDSWichmann R.Krautter J.Covino E.Alcala J.M.Neuhaeuser R.,Schmitt J.H.M.M.2001-10-23T22:24:18Z2001-10-23T22:21:55ZCDS support team

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

cds-question@unistra.frpre-main-sequence-starsinfrared-photometryvisible-astronomybroad-band-photometryIn a recent study, some 130 new weak-line T Tauri stars (WTTS) have been discovered in the Lupus star forming region (SFR). Some of these stars are seen projected onto regions of high obscuration, while others are located far from the Lupus dark clouds. In this paper we present photometric observations of a large sample of these WTTS. We estimate effective temperatures and luminosities for the stars observed, and derive masses and ages by comparison with theoretical evolutionary tracks. The photometric observations were performed at the ESO 1 m-Telescope during two observing runs in 1993 (March 10-12) and 1994 (May 1-6) at ESO, La Silla. The typical standard deviations are 0.01mag in V, 0.02mag in B-V, 0.04mag in U-B, 0.01 in V-R and V-I. For a description of the UBV, (RI)c and JHKL photometric systems, see e.g. <GCPD/01>, <GCPD/54> and <GCPD/09>1997A&A...320..185Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/320/185CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/123/329 : New weak-line T Tauri stars in Lupus (Krautter+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/320/185https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/320/185http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/320/185https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/320/185https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/320/185http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/320/185GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/320/185/table6 (Photometry of Lupus T Tauri stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/320/185/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/320/185/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/320/185/table6?GETtext/xml+votable180.050000true226.475-43.18330.0055555555555555565/10654 6/41949 41972-41973 42555 42559 42571 42589 42609 42611-42612 42614 42630 42634-42635 42653 42655 42658 42662-42664 42672 42675 42678-42679 42683-42686 42689 42691-42693 42695-42696 42699 42703 42705-42708 42712 42719 42730 42737 42760 42885 42888-42889 42891 44050-44051 44059 44061 44063 44104 44108https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/320/185?format=asciiOpticalInfrareddefaultJ/A+A/320/185/table6Photometry of Lupus T Tauri starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRXIdentifier of star from ROSATmeta.id;meta.maincharprimaryVmag? V magnitudemagphot.mag;em.opt.VfloatnullableB-V? B-V color indexmagphot.color;em.opt.B;em.opt.VfloatnullableU-B? U-B color indexmagphot.color;em.opt.U;em.opt.BfloatnullableV-Rc? V-R(Cousins) color indexmagphot.color;em.opt.V;em.opt.RfloatnullableV-Ic? V-I(Cousins) color indexmagphot.color;em.opt.V;em.opt.IfloatnullableJmag? J magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? Error of J magnitudemagstat.errorfloatnullableHmag? H magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? Error of H magnitudemagstat.errorfloatnullableKmag? K magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? Error of K magnitudemagstat.errorfloatnullableLmag? L magnitudemagphot.mag;em.IR.3-4umfloatnullablee_Lmag? Error of L magnitudemagstat.errorfloatnullable_RAComputed Right Ascension for Equinox: J2000degpos.eq.ra;meta.main_DEComputed Declination for Equinox: J2000degpos.eq.dec;meta.mainJ/A+A/320/185/table7Stellar properties of Lupus T Tauri starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRXIdentifier of star from ROSATmeta.id;meta.maincharSpTypeSpectral typesrc.spTypecharTeffEffective temperatureKphys.temperature.effectivefloatlog(L)Log(L_bol)log(solLum)phys.luminosityfloatAVExtinction A(V)magphys.absorptionfloatRadRadiussolRadphys.size.radiusfloatMassMass (1)solMassphys.massfloatl_log(age)[U] Lower limit indicator (2)meta.code.errorcharlog(age)Log(age) (1)log(yr)time.agefloatD(H-K)? Delta (H-K)magphot.color;arith.difffloatnullable