J/A+A/570/A82ivo://CDS.VizieR/J/A+A/570/A82doi:10.26093/cds/vizier.35700082CDSVenuti L.Bouvier J.Flaccomio E.Alencar S.H.P.Irwin J.,Stauffer J.R.Cody A.M.Teixeira P.S.Sousa A.P.Micela G.,Cuillandre J.-C.Peres G.2017-06-19T07:57:38Z2014-10-21T08:27:00ZCDS support team

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

cds-question@unistra.fropen-star-clustersaccretionccd-photometryvisible-astronomysloan-photometryOur study aims at characterizing the accretion properties of several hundred members of the star-forming region NGC 2264 (3Myr). We performed a deep u,g,r,i mapping of the cluster with CFHT/MegaCam, and monitored the simultaneous u+r variability of its members over a baseline of two weeks. Stellar parameters are determined homogeneously for about 750 monitored young objects, 40% of which are accreting T Tauri stars. Accretion properties and accretion variability are investigated and characterized from UV excess measurements. Non-accreting members of the cluster define the reference UV emission level over which flux excess is detected and measured.2014A&A...570A..82Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/570/A82CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/114/2644 : UBVRIHa photometry of NGC2264 (Sung+, 1997)J/A+A/345/521 : BVRI photometry of NGC 2264 (Flaccomio+, 1999)J/A+A/355/651 : HRI observations of PMS stars in NGC 2264 (Flaccomio+, 2000)J/AJ/123/1528 : UBV(RI)_C_ and JHK photometry in NGC 2264 (Rebull+, 2002)J/A+A/417/557 : Rotation + variability of PMS Stars in NGC 2264 (Lamm, 2004)J/A+A/430/1005 : VRIH{alpha} photometry of NGC 2264 variables (Lamm+, 2005)J/A+A/455/903 : ACIS-I observations of NGC 2264 (Flaccomio+, 2006)J/AJ/127/1117 : Halpha emission-line stars in NGC2264 (Reipurth+, 2004)J/AJ/127/2228 : VRI photometry of PMS stars in NGC 2264 OB (Makidon+, 2004)J/AJ/127/2659 : CHANDRA observations of NGC 2264 (Ramirez+, 2004)J/AJ/128/1684 : NGC 2264: VRIH{alpha} photometry (Sung+, 2004)J/AJ/129/829 : H{alpha} emission stars in NGC 2264 (Dahm+, 2005)J/ApJ/648/1090 : Radial velocities of NGC 2264 stars (Furesz+, 2006)J/ApJ/671/605 : NGC 2264 and ONC PMS stars in the infrared (Cieza+, 2007)J/AJ/134/999 : X-ray observations of NGC 2264 (Dahm+, 2007)J/AJ/135/441 : VRIH{alpha} photometry in NGC 2264 (Sung+, 2008)J/AJ/138/963 : Rotation of NGC 2264 members (Baxter+, 2009)J/AJ/138/1116 : A Spitzer view of NGC 2264 (Sung+, 2009)J/ApJ/741/35 : NIR photometry and polarization in NGC 2264 (Kwon+, 2011)J/MNRAS/430/1433 : NGC 2264 members periods with CoRoT (Affer+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/570/A82https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/570/A82http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/570/A82https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/570/A82https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/570/A82http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/570/A82GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/570/A82/stars (Photometry, spectral types, extinction and stellar parameters for NGC 2264 members monitored at CFHT)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/570/A82/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/570/A82/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/570/A82/stars?GETtext/xml+votable180.050000true100.471099.967550.0055555555555555565/5909 6/https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/570/A82?format=asciiOpticaldefaultJ/A+A/570/A82/table4UV excess, u-band excess luminosity, accretion rate and accretion rate variability estimates for NGC 2264 accreting membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMonObject identifier (G1)meta.id;meta.mainintE(u-g)UV excess measured from the u-g color indexmagphot.color.excessfloatE(u-r)? UV excess measured from the u-r color index (1)magphot.color.excessfloatnullablelogLEu? Logarithm of the measured u-band excess luminosity (1)log(solLum)phys.luminosity;arith.ratiofloatnullablelogMa.g? Log of the mass accretion rate derived from the (u-g) color excesslog(solMass.yr**-1)phys.mass.lossfloatnullablel_logMa.g[*] indicates an upper limit at the detection threshold (see text)meta.code.errorcharlogMa.r? Log of the mass accretion rate derived from the (u-r) color excess (1)log(solMass.yr**-1)phys.mass.lossfloatnullablel_logMa.r[*] * indicates an upper limit at the detection threshold (see text)meta.code.errorcharvar+? Positive (u-r) accretion variability bar log(max/med) (2)log(solMass.yr**-1)src.var.indexfloatnullablevar-? Negative (u-r) accretion variability bar log(med/min) (2)log(solMass.yr**-1)src.var.indexfloatnullableJ/A+A/570/A82/starsPhotometry, spectral types, extinction and stellar parameters for NGC 2264 members monitored at CFHTrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMonObject identifier (G1)meta.id;meta.mainintprimaryASimbad column added by the CDSmeta.ref.urlcharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainumagu-band apparent magnitudemagphot.mag;em.opt.Ufloatgmag? g-band apparent magnitudemagphot.mag;em.opt.Bfloatnullablermagr-band apparent magnitudemagphot.mag;em.opt.Rfloatimag? i-band apparent magnitudemagphot.mag;em.opt.IfloatnullableStCTTS (accreting) vs. WTTS (non-accreting) classification for members (1)meta.code.classcharSpTSpectral type of the objectsrc.spTypecharr_SpT[sp] spectroscopic or photometric type (2)meta.ref;pos.framecharAv[0/7.1]? Visual extinctionmagphys.absorption;em.opt.VfloatnullableLbolBolometric luminosity of the objectsolLumphys.luminosityfloatMass? Stellar masssolMassphys.massfloatnullableRad? Stellar radiussolRadphys.size.radiusfloatnullablelogAge? Logarithm of the age of the objectlog(yr)time.agefloatnullable