J/other/RAA/23.Givo://CDS.VizieR/J/other/RAA/23.G5015CDSWang X.-L.Fang M.Herczeg G.J.Gao Y.Tian H.-J.Zhou X.-Y.,Zhang H.-X.Chen X.-P.2024-10-21T14:21:34Z2023-11-16T13:38:01ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectsvariable-starsphotometryvisible-astronomyWe present an analysis of 288 young stellar objects (YSOs) in the Perseus molecular cloud that have well defined g and r-band lightcurves from the Zwicky Transient Facility. Of the 288 YSOs, 238 sources (83% of our working sample) are identified as variables based on the normalized peak-to-peak variability metric, with variability fraction of 92% for stars with disks and 77% for the diskless populations. These variables are classified into different categories using the quasiperiodicity (Q) and flux asymmetry (M) metrics. Fifty-three variables are classified as strictly periodic objects that are well phased and can be attributed to spot modulated stellar rotation. We also identify 22 bursters and 25 dippers, which can be attributed to accretion burst and variable extinction, respectively. YSOs with disks tend to have asymmetric and non-repeatable lightcurves, while the YSOs without disks tend to have (quasi)periodic lightcurves. The periodic variables have the steepest change in g versus g-r, while bursters have much flatter changes than dippers in g versus g-r. Periodic and quasiperiodic variables display the lowest variability amplitude. Simple models suggest that the variability amplitudes of periodic variables correspond to changes of the spot coverage of 30%-40%, burster variables are attributed to accretion luminosity changes in the range of Lacc/L*=0.1-0.3, and dippers are due to variable extinction with AV changes in the range of 0.5-1.3mag.2023RAA....23g5015Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/RAA/23.G5015CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/RAA/23.G5015https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/RAA/23.G5015http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/RAA/23.G5015https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/RAA/23.G5015https://vizier.iucaa.in/viz-bin/votable?-source=J/other/RAA/23.G5015http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/RAA/23.G5015GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/RAA/23.G5015/tableb1 (Properties of Variables in the Perseus Molecular Cloud)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/RAA/23.G5015/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/other/RAA/23.G5015/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/RAA/23.G5015/tableb1?GETtext/xml+votable180.050000true51.2454288931.010398060.0055555555555555566/855 857 859-862 881 1537-1540 1542 1544-1545https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/RAA/23.G5015?format=asciiOpticaldefaultJ/other/RAA/23.G5015/tableb1Properties of Variables in the Perseus Molecular CloudTypeCategory (5)src.classcharn_Type[c] Note on Type (6)meta.notecharAngle? Slope angledegpos.posAngfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIdentifiermeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainSpTypeSpectral typesrc.spTypecharDisk[YN] Disked? (1)meta.codecharCTTS[YN-] CTTSs or WTTSs? (2)meta.codecharrmagMean r magnitudemagphot.mag;em.opt.RfloatvNormalized peak-to-peak variability metric (3)src.var.indexfloatAmpAmplitude of variationmagarith.rate;phot.magfloatTimescaleTimescaledtime.intervalfloatQQ metric that quantifying quasiperiodicity (4)stat.fit.paramfloatMM metric that quantifying flux asymmetry (4)stat.fit.paramfloatSimbadNameSimbad column added by the CDSmeta.idcharnullable