J/MNRAS/435/771ivo://CDS.VizieR/J/MNRAS/435/771doi:10.26093/cds/vizier.74350771CDSMunari U.Dallaporta S.Castellani F.Valisa P.Frigo A.Chomiuk L.,Ribeiro V.A.R.M.2024-08-06T20:17:25Z2015-03-05T07:29:36ZCDS support team

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

cds-question@unistra.frnovaecataclysmic-variable-starsinfrared-photometryvisible-astronomybroad-band-photometryWe present and discuss accurate and densely mapped BVR_C_I_C_ light curves of the neon Nova Mon 2012, supplemented by the evolution in Stromgren b and y bands and in the integrated flux of relevant emission lines. Our monitoring started with the optical discovery of the nova (50days past the first detection in gamma-rays by Fermi-LAT) and extend to day +270, well past the end of the super-soft phase in X-rays. The nova was discovered during the nebular decline, well past t_3_ and the transition to optically thin ejecta. It displayed very smoothly evolving light curves. A bifurcation between y and V light curves took place at the start of the super-soft X-ray source (SSS) phase, and a knee developed towards the end of the SSS phase. The apparent magnitude of the nova at the unobserved optical maximum is constrained to +3<=V<=4.5. The appearance, grow in amplitude and then demise of a 0.29585 (+/-0.00002) days orbital modulation of the optical brightness was followed along the nova evolution. The observed modulation, identical in phase and period with the analogue seen in the X-ray and satellite ultraviolet, has a near-sinusoidal shape and a weak secondary minimum at phase 0.5. We favour an interpretation in terms of super-imposed ellipsoidal distortion of the Roche lobe filling companion and irradiation of its side facing the WD. Similar light curves are typical of symbiotic stars where a Roche lobe filling giant is irradiated by a very hot WD. Given the high orbital inclination, mutual occultation between the donor star and the accretion disc could contribute to the observed modulation. The optical+infrared spectral energy distribution of Nova Mon 2012 during the quiescence preceding outburst is nicely fitted by an early K-type main-sequence star (~K3V) at 1.5kpc distance, reddened by E(B-V)=0.38, with a WD companion and an accretion disc contributing to the observed blue excess and moderate H{alpha} emission. A typical early K-type main-sequence star with a mass of ~0.75M_{sun}_ and a radius of ~0.8 R{sun} would fill its Roche lobe for a P=0.29585d orbital period and a more massive WD companion (as implied by the large Ne overabundance of the ejecta).2013MNRAS.435..771Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/435/771CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AZh/71/618 : UBVJHKLM Photometry of Nova Cygni 1992 (Kolotilov+, 1994)J/A+A/448/1107 : RI light curves of V1493 Aql (Dobrotka+, 2006)J/A+A/452/567 : Spectra of Nova Scuti 2005 N.2 (V477 Sct) (Munari+, 2006)J/A+A/459/875 : Early spectral evolution of Nova Sgr 2004 (Ederoclite+, 2006)J/A+A/486/855 : R light curve of DO Dra (Andronov+, 2008)J/A+A/492/145 : UBV(RI)c light curves of Nova Cygni 2006 (Munari+, 2008)J/MNRAS/387/344 : BVRcIC photometry of V2615 Oph (Munari+, 2008)J/other/CoSka/39.43 : Nova Tri UBV(RI)c light curves (Chochol+, 2009)J/A+A/497/437 : V light curves of DI UMa (Rutkowski+, 2009)J/AJ/140/925 : Pre-eruption light curves for Nova U Sco (Schaefer+, 2010)J/other/PZ/30.4 : BVRI photometry of nova V445 Pup (Goranskij+, 2010)J/ApJ/742/113 : Photometry during the 2010 eruption of U Sco (Schaefer+ 2011)J/AJ/141/121 : V446 Her V light curves (Honeycutt+, 2011)J/AJ/141/122 : DK Lac V light curves (Honeycutt+, 2011)J/A+A/539/A94 : Mean spectrum of CP Pup in 1996 (Bianchini+, 2012)J/A+A/543/A86 : Nova V1280 Sco BVRcIcy light curves (Naito+, 2012)J/A+A/544/A26 : CI Aql spectra during 2000 outburst (Iijima, 2012)J/PAZh/28/764 : UBVR photometry of Nova Mon 2002 (V838 Mon) (Goranskii+ 2002)J/other/CoSka/42.39 : UBVRI light curves of Dwarf nova Peg 2010 (Chochol+ 2012)J/A+A/559/A121 : U Sco outburst & pre-outburst optical spectrum (Anupama 2013)J/A+A/566/A101 : V893 Sco long-term photometry (Bruch, 2014)J/AJ/147/105 : Light curve of HR Lyr over 1991-2012 (Honeycutt+, 2014)J/ApJ/755/158 : Near-IR interferometry of nova Vul 2007 (Rajabi+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/435/771https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/435/771http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/435/771https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/435/771https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/435/771http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/435/771GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap2.367228618189496e-19 4.920466254354166e-19OpticalInfrareddefaultJ/MNRAS/435/771/table2Our merged photometry of Nova Mon 2012recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2450000)dtime.epochdoubleBmag? Johnson B magnitudemagphot.mag;em.opt.BfloatnullableVmagJohnson V magnitudemagphot.mag;em.opt.VfloatRcmag? Cousins R magnitudemagphot.mag;em.opt.RfloatnullableIcmag? Cousins I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope numbermeta.id;meta.mainint