J/AJ/123/387ivo://CDS.VizieR/J/AJ/123/387doi:10.26093/cds/vizier.51230387CDSDolan C.J.Mathieu R.D.2023-04-06T16:50:49Z2002-07-22T16:13:17ZCDS support team

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

cds-question@unistra.frpre-main-sequence-starsinfrared-photometryvisible-astronomyphotometryWe present VRI photometry of 320,917 stars with 11<~R<~18 throughout the {lambda} Ori star-forming region. Using the more spatially limited spectroscopic surveys of Dolan & Mathieu (1999, Cat. <J/AJ/118/2409>, 2001, Cat. <J/AJ/121/2124>) to define the color-magnitude domain of young low-mass members of the association and removing statistically the field stars in this domain, we use our photometry to identify a representative pre-main-sequence (PMS) population throughout the interior of the molecular ring.2002AJ....123..387Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/123/387CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/118/2409 : VRI photometry of {lambda} Ori PMS stars (Dolan+, 1999)J/AJ/121/2124 : {lambda} Ori pre-main-sequence stars photometry (Dolan+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/123/387https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/123/387http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/123/387https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/123/387https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/123/387http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/123/387GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/123/387/phot (VRI Photometry (table 4))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/123/387/phot?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/123/387/phot?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/123/387/phot?GETtext/xml+votable180.050000true79.4621510.639955560.005555555555555556Cone search capability for table J/AJ/123/387/fields (The targets observed (tables 1 and 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/123/387/fields?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/123/387/fields?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/123/387/fields?GETtext/xml+votable180.050000true85.845838.938330.0055555555555555564/1480-1482 5/5751 5932-5934 6/22911 22997 22999 23028-23029 23031 23037 23594-23595 23598-23599 23609-23611 23614 23740 23742-23743 23784 24065 24068-24069 24071 24080-24082 24084-24086https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/123/387?format=asciiOpticalInfrareddefaultJ/AJ/123/387/photVRI Photometry (table 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlOriObject identification, JHHMMSS.s+DDMMSSa (1)meta.id;meta.maincharVmagThe V band magnitude (2)magphot.mag;em.opt.VfloatRmagThe R_C_ band magnitude (2)magphot.mag;em.opt.RfloatImagThe I_C_ band magnitude (2)magphot.mag;em.opt.IfloatRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainindexedDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainindexedFldField numberobs.fieldcharJ/AJ/123/387/fieldsThe targets observed (tables 1 and 3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFldTarget field numberobs.fieldintprimaryRAJ2000Right Ascension (J2000) of field center (hr)pos.eq.ra;meta.mainDEJ2000Declination (J2000) of field center (deg)pos.eq.dec;meta.mainNight? Observation date (blank = not observed)time.epochnullableComComments about observing conditionsmeta.notechar