J/A+A/409/169ivo://CDS.VizieR/J/A+A/409/169doi:10.26093/cds/vizier.34090169CDSBouvier J.Grankin K.N.Alencar S.H.P.Dougados C.Fernandez M.,Basri G.Batalha C.Guenther E.Ibrahimov M.A.Magakian T.Y.,Melnikov S.Y.Petrov P.P.Rud M.V.Zapatero Osorio M.R.2017-07-06T06:25:38Z2004-01-27T10:40:19ZCDS 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-photometryWe report the results of a synoptic study of the photometric and spectroscopic variability of the classical T Tauri star AA Tau on timescales ranging from a few hours to several weeks. The AA Tau light curve had been previously shown to vary with a 8.2d period, exhibiting a roughly constant brightness level, interrupted by quasi-cyclic fading episodes, which we interpreted as recurrent eclipses of the central star by the warped inner edge of its accretion disk (Bouvier et al. 1999, Cat. <J/A+A/349/619>). Our observations show the system is dynamic and presents non-stationary variability both in the photometry and spectroscopy.2003A&A...409..169Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/409/169CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/349/619 : UBVRI light curves of AA Tau in 1995 (Bouvier+, 1999)Table 1: Journal of observations.https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/409/169https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/409/169http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/409/169https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/409/169https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/409/169http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/409/169GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/A+A/409/169/ubvriUBVRI light curves of AA TauJDJulian datedtime.epochdoubleMagMagnitudemagphot.magfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinte_MagError on magnitudemagstat.errorfloatFilter[UBVRI] Filtermeta.code;instr.filterchar