J/ApJ/811/32ivo://CDS.VizieR/J/ApJ/811/32doi:10.26093/cds/vizier.18110032CDSPagnotta A.Schaefer B.E.Clem J.L.Landolt A.U.Handler G.Page K.L.,Osborne J.P.Schlegel E.M.Hoffman D.I.Kiyota S.Maehara H.2017-06-30T05:49:15Z2016-01-20T09:12:27ZCDS support team

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

cds-question@unistra.frnovaeinfrared-photometryvisible-astronomybroad-band-photometryx-ray-sourcesThe recurrent nova U Scorpii most recently erupted in 2010. Our collaboration observed the eruption in bands ranging from the Swift XRT and UVOT w2 (193nm) to K-band (2200nm), with a few serendipitous observations stretching down to WISE W2 (4600nm). Considering the time and wavelength coverage, this is the most comprehensively observed nova eruption to date. We present here the resulting multi-wavelength light curve covering the two months of the eruption as well as a few months into quiescence. For the first time, a U Sco eruption has been followed all the way back to quiescence, leading to the discovery of new features in the light curve, including a second, as-yet-unexplained, plateau in the optical and near-infrared. Using this light curve we show that U Sco nearly fits the broken power law decline predicted by Hachisu & Kato (2006ApJS..167...59H), with decline indices of -1.71+/-0.02 and -3.36+/-0.14. With our unprecedented multi-wavelength coverage, we construct daily spectral energy distributions and then calculate the total radiated energy of the eruption, E_rad_=6.99^+0.83^_-0.57_x10^44^erg. From that, we estimate the total amount of mass ejected by the eruption to be m_ej_=2.10^+0.24^_-0.17_x10^-6^M_{sun}_. We compare this to the total amount of mass accreted by U Sco before the eruption, to determine whether the white dwarf undergoes a net mass loss or gain, but find that the values for the amount of mass accreted are not precise enough to make a useful comparison.2015ApJ...811...32Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/811/32CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)B/cb : Cataclysmic Binaries, LMXBs, and related objects (Ritter+, 2014)B/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)J/A+A/559/A121 : U Sco outburst & pre-outburst optical spectrum (Anupama, 2013)J/ApJS/197/31 : Swift X-ray obs. of classical novae. II. (Schwarz+, 2011)J/ApJ/742/113 : Photometry during the 2010 eruption of U Sco (Schaefer+, 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/811/32https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/811/32http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/811/32https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/811/32https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/811/32http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/811/32GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfraredX-raydefaultJ/ApJ/811/32/table4U Sco 2010 observations, X-ray count ratesPhaseOrbital Phasetime.phasefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date of observationdtime.epochdoubleCR[0.001/2.7] Swift/XRT 0.3-10keV count ratectphot.count;em.X-rayfloate_CR[0.0003/0.5] 1-sigma error on the XRT count ratectstat.errorfloatJ/ApJ/811/32/table3U Sco 2010 observations, infrared to ultraviolet magnituderecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date of observationdtime.epochdoublePhaseOrbital Phasetime.phasefloatObsPerson who made the observationobs.observercharTelTelescope usedinstr.setupcharFiltFilter used (UBVRcIcJHK, Stromgren by, w1, w2, and W1, W2) (1)instr.setup;instr.filtercharmag[7.5/20] Magnitude in Filtmagphot.magfloate_mag[0/0.3] 1-sigma error on the magnitudemagstat.error;phot.magfloat