J/AJ/146/112ivo://CDS.VizieR/J/AJ/146/112doi:10.26093/cds/vizier.51460112CDSRodriguez J.E.Pepper J.Stassun K.G.Siverd R.J.Cargile P.,Beatty T.G.Gaudi B.S.2017-07-06T06:25:28Z2014-07-17T09:01:57ZCDS support team

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

cds-question@unistra.frpre-main-sequence-starsvariable-starsvisible-astronomybroad-band-photometryRW Aur A is a classical T Tauri star, believed to have undergone a reconfiguration of its circumstellar environment as a consequence of a recent flyby of its stellar companion, RW Aur B. This interaction stripped away part of the circumstellar disk of RW Aur A, leaving a tidally disrupted "arm" and a short truncated circumstellar disk. We present photometric observations of the RW Aur system from the Kilodegree Extremely Little Telescope survey showing a long and deep dimming that occurred from 2010 September until 2011 March. The dimming has a depth of ~2mag, a duration of ~180 days, and was confirmed by archival observations from American Association of Variable Star Observers. We suggest that this event is the result of a portion of the tidally disrupted disk occulting RW Aur A, specifically a fragment of the tidally disrupted arm. The calculated transverse linear velocity of the occulter is in excellent agreement with the measured relative radial velocity of the tidally disrupted arm. Using simple kinematic and geometric arguments, we show that the occulter cannot be a feature of the RW Aur A circumstellar disk, and we consider and discount other hypotheses. We also place constraints on the thickness and semimajor axis of the portion of the arm that occulted the star.2013AJ....146..112Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/146/112CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)J/ApJS/196/4 : New young star candidates in Taurus-Auriga (Rebull+, 2011)J/A+A/519/A83 : T Tau stars toward the Taurus-Auriga region (Takita+ 2010)J/ApJS/147/305 : IUE atlas of pre-main-sequence stars (Valenti+, 2003)J/ApJ/581/1194 : Taurus-Auriga PMS stars ages and Teff (Palla+, 2002)J/A+A/376/982 : Near-IR observations of young binaries (Woitas+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/146/112https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/146/112http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/146/112https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/146/112https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/146/112http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/146/112GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap3.322582951404819e-19 3.852589004194616e-19OpticaldefaultJ/AJ/146/112/table1KELT-North photometric observations of RW AurigarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarcentric Julian Date of observation (TDB)dtime.epochdoubleVmagRelative KELT instrumental V band magnitude (1)magphot.mag;em.opt.Vfloate_VmagPoisson error in Vmagmagstat.error;phot.mag;em.opt.Vfloat