J/ApJ/742/113ivo://CDS.VizieR/J/ApJ/742/113doi:10.26093/cds/vizier.17420113CDSSchaefer B.E.Pagnotta A.LaCluyze A.P.Reichart D.E.Ivarsen K.M.,Haislip J.B.Nysewander M.C.Moore J.P.Oksanen A.Worters H.L.,Sefako R.R.Mentz J.Dvorak S.Gomez T.Harris B.G.Henden A.A.,Tan T.G.Templeton M.Allen W.H.Monard B.Rea R.D.Roberts G.,Stein W.Maehara H.Richards T.Stockdale C.Krajci T.Sjoberg G.,McCormick J.Revnivtsev M.Molkov S.Suleimanov V.Darnley M.J.,Bode M.F.Handler G.Lepine S.Shara M.M.2017-06-28T06:58:05Z2013-05-27T12:20:33ZCDS support team

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

cds-question@unistra.frnovaeinfrared-photometryvisible-astronomyWide-band photometryThe eruption of the recurrent nova U Scorpii on 2010 January 28 is now the all-time best observed nova event. We report 36776 magnitudes throughout its 67 day eruption, for an average of one measure every 2.6 minutes. This unique and unprecedented coverage is the first time that a nova has had any substantial amount of fast photometry. With this, two new phenomena have been discovered: the fast flares in the early light curve seen from days 9-15 (which have no proposed explanation) and the optical dips seen out of eclipse from days 41-61 (likely caused by raised rims of the accretion disk occulting the bright inner regions of the disk as seen over specific orbital phases). The expanding shell and wind cleared enough from days 12-15 so that the inner binary system became visible, resulting in the sudden onset of eclipses and the turn-on of the supersoft X-ray source. On day 15, a strong asymmetry in the out-of-eclipse light points to the existence of the accretion stream. The normal optical flickering restarts on day 24.5. For days 15-26, eclipse mapping shows that the optical source is spherically symmetric with a radius of 4.1R_{sun}_. For days 26-41, the optical light is coming from a rim-bright disk of radius 3.4R_{sun}_. For days 41-67, the optical source is a center-bright disk of radius 2.2R_{sun}_. Throughout the eruption, the colors remain essentially constant. We present 12 eclipse times during eruption plus five just after the eruption.2011ApJ...742..113Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/742/113CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2013)B/cb : Cataclysmic Binaries, LMXBs, and related objects (Ritter+, 2013)V/123 : Catalog of Cataclysmic Variables (Downes+ 2001-2006)II/237 : Stellar Photometry in Johnson's 11-color system (Ducati, 2002)J/ApJS/197/31 : Swift observations of classical novae. II. (Schwarz+, 2011)J/AJ/140/925 : Pre-eruption light curves for Nova U Sco (Schaefer+, 2010)J/AJ/140/34 : Classification of nova light curves (Strope+, 2010)J/ApJS/187/275 : Photometric histories of recurrent novae (Schaefer, 2010)J/ApJ/565/511 : Cataclysmic variables in the 2MASS 2IDR (Hoard+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/742/113https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/742/113http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/742/113https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/742/113https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/742/113http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/742/113GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap3.322582951404819e-19 3.852589004194616e-19OpticalInfrareddefaultJ/ApJ/742/113/table3UBVRI fast photometry from PROMPT 0.41mrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoublePhasePhasetime.phasefloatBandBand used in the observation (VI for table 4)instr.setup;obscharmagObserved magnitude in Bandmagphot.magfloate_magUncertainty in magmagstat.error;phot.magfloatJ/ApJ/742/113/table4Post-eruption eclipse time seriesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoublePhasePhasetime.phasefloatBandBand used in the observation (VI for table 4)instr.setup;obscharmagObserved magnitude in Bandmagphot.magfloate_magUncertainty in magmagstat.error;phot.magfloatTelTelescope (only for table 4)meta.id;instr.telcharJ/ApJ/742/113/table1Photometry observers and sitesOff1Offset 1magphot.mag;arith.zpfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsObserver name(s)meta.id;obs.observercharf_Obs[a] a: Munari et al. 2010IBVS.5930....1Mmeta.codecharSiteTelescope siteobs.paramcharTelTelescope identificationmeta.id;instr.telcharFiltFilter(s)meta.id;instr.filtercharStartHJD start (HJD-2455000)dtime.startfloatStopHJD stop (HJD-2455000)dtime.endfloatNmags[12/11543] Number of observed magnitudesmeta.numberintOff2? Offset 2magphot.mag;arith.zpfloatnullableJ/ApJ/742/113/table2Observed V-band magnitudes for U Sco eruptionObsObserver namemeta.id;obs.observercharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoublePhasePhasetime.phasefloatVmag[7.83/18.48] V band magnitudemagphot.mag;em.opt.Vfloate_Vmag[0.01/0.31] Uncertainty in Vmagmagstat.error;phot.mag;em.opt.VfloatV-VtDetrended V band magnitudephot.magfloat