J/AJ/147/82ivo://CDS.VizieR/J/AJ/147/82doi:10.26093/cds/vizier.51470082CDSCody A.M.Stauffer J.Baglin A.Micela G.Rebull L.M.Flaccomio E.,Morales-Calderon M.Aigrain S.Bouvier J.Hillenbrand L.A.,Gutermuth R.Song I.Turner N.Alencar S.H.P.Zwintz K.Plavchan P.,Carpenter J.Findeisen K.Carey S.Terebey S.Hartmann L.Calvet N.,Teixeira P.Vrba F.J.Wolk S.Covey K.Poppenhaeger K.Gunther H.M.,Forbrich J.Whitney B.Affer L.Herbst W.Hora J.Barrado D.,Holtzman J.Marchis F.Wood K.Guimaraes M.M.Lillo Box J.Gillen E.,McQuillan A.Espaillat C.Allen L.D'Alessio P.Favata F.2017-06-26T11:49:06Z2015-01-16T08:02:46ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryWe present the Coordinated Synoptic Investigation of NGC 2264, a continuous 30 day multi-wavelength photometric monitoring campaign on more than 1000 young cluster members using 16 telescopes. The unprecedented combination of multi-wavelength, high-precision, high-cadence, and long-duration data opens a new window into the time domain behavior of young stellar objects. Here we provide an overview of the observations, focusing on results from Spitzer and CoRoT. The highlight of this work is detailed analysis of 162 classical T Tauri stars for which we can probe optical and mid-infrared flux variations to 1% amplitudes and sub-hour timescales. We present a morphological variability census and then use metrics of periodicity, stochasticity, and symmetry to statistically separate the light curves into seven distinct classes, which we suggest represent different physical processes and geometric effects. We provide distributions of the characteristic timescales and amplitudes and assess the fractional representation within each class. The largest category (>20%) are optical "dippers" with discrete fading events lasting ~1-5 days. The degree of correlation between the optical and infrared light curves is positive but weak; notably, the independently assigned optical and infrared morphology classes tend to be different for the same object. Assessment of flux variation behavior with respect to (circum)stellar properties reveals correlations of variability parameters with H{alpha} emission and with effective temperature. Overall, our results point to multiple origins of young star variability, including circumstellar obscuration events, hot spots on the star and/or disk, accretion bursts, and rapid structural changes in the inner disk.2014AJ....147...82Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/147/82CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/corot : CoRoT observation log Release 13 (CoRoT, 2009-2014)J/AJ/138/1116 : A Spitzer view of NGC 2264 (Sung+, 2009)J/ApJ/648/1090 : Radial velocities of NGC 2264 stars (Furesz+, 2006)J/AJ/129/829 : H{alpha} emission stars in NGC 2264 (Dahm+, 2005)J/AJ/127/2228 : VRI photometry of PMS stars in NGC 2264 OB (Makidon+, 2004)J/A+A/417/557 : Rotation & variability of PMS Stars in NGC 2264 (Lamm, 2004)J/AJ/123/1528 : UBV(RI)_C_ and JHK photometry in NGC 2264 (Rebull+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/147/82https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/147/82http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/147/82https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/147/82https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/147/82http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/147/82GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/147/82/stars (Photometry , and variability properties of the NGC 2264 members monitored with CoRoT and Spitzer)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/147/82/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/147/82/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/147/82/stars?GETtext/xml+votable180.050000true100.4719.96744440.0055555555555555566/23636 23637 236396.772611666688002e-21 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/147/82?format=asciiInfrareddefaultJ/AJ/147/82/starsPhotometry , and variability properties of the NGC 2264 members monitored with CoRoT and SpitzerCSI[7/6491] CSI Mon identifier (1)meta.id;meta.mainintprimarySpTSpectral type (5)src.spTypecharu_S[*] few data points (12)meta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_CSI[I] Indicates an object with IRAC staring datameta.notechar2MASS2MASS identifier (JHHMMSSss+DDMMSSs)meta.idcharCoRoTCoRoT identifier (from the SRa05 run) (2)meta.idlongJmag? 2MASS J band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? Error in Jmagmagstat.error;phot.mag;em.IR.JfloatnullableHmag? 2MASS H band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? Error in Hmagmagstat.error;phot.mag;em.IR.HfloatnullableKmag? 2MASS Ks band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? Error in Kmagmagstat.error;phot.mag;em.IR.Kfloatnullable[3.6]Spitzer/IRAC 3.6{mu}m band magnitude (3)magphot.mag;em.IR.3-4umfloate_[3.6]? Error in [3.6]magstat.errorfloatnullable[4.5]Spitzer/IRAC 4.5{mu}m band magnitude (3)magphot.mag;em.IR.4-8umfloate_[4.5]? Error in [4.5]magstat.errorfloatnullable[5.8]Spitzer/IRAC 5.8{mu}m band magnitude (3)magphot.flux.density;em.IR.4-8umfloate_[5.8]Error in [5.8]magstat.errorfloat[8.0]? Spitzer/IRAC 8.0{mu}m band magnitude (3)magphot.flux.density;em.IR.8-15umfloatnullablee_[8.0]? Error in [8.0]magstat.errorfloatnullable[24]? Spitzer/MIPS 24{mu}m band magnitude (3)magphot.flux.density;em.IR.15-30umfloatnullablee_[24]? Error in [24]magstat.errorfloatnullableClassDisk class (I, II, II/III, or flat) (4)src.classcharEWHa? Equivalent width of the H{alpha} line (6)0.1nmspect.line.eqWidth;em.line.HalphafloatnullableC[YN] Denotes whether the object appears to have a Companion within 1'' (Y=Yes, N=No) (7)meta.code.multipcharSimbadSimbad column added by the CDSmeta.ref.urlcharF[e] Denotes Faint (R>15.5) variables that were detected only by eyemeta.codecharsOpt[0.004/0.33] Root-mean-square (rms) deviation of optical light curvemagstat.fit.paramfloats3.6[0.008/0.15]? rms deviation in 3.6{mu}m bandmagstat.fit.paramfloatnullables4.5[0.008/0.18]? rms deviation in 4.5{mu}m bandstat.fit.paramfloatnullableOPer[AQP N] Optical periodicity flag (8)meta.code;src.varcharIPer[AQP N] Infrared periodicity flag (8)meta.code;src.varcharOtau1[0.6/77]? Optical time scale (9)dtime.scalefloatnullableOtau2[0.8/7.5]? Second optical timescale value (9)dtime.scalefloatnullableItau1[1/57]? Infrared timescale (9)dtime.scalefloatnullableItau2[5/6]? Second infrared timescale value (9)dtime.scalefloatnullableOvarOptical morphological variability type (10)meta.code;src.varcharIvarInfrared morphological variability type (10)meta.code;src.varcharS[-1.1/7] Median running Stetson index (degree of optical/infrared correlation) (11)src.var.indexfloatTypeVariability type (pv=periodic, iv=irregular) (13)meta.notechar_RAPositions from 2MASS names (right ascension part)degpos.eq.ra;meta.main_DEPositions from 2MASS names (declination part)degpos.eq.dec;meta.main