J/ApJ/899/162ivo://CDS.VizieR/J/ApJ/899/162doi:10.26093/cds/vizier.18990162CDSWee J.Blagorodnova N.Penprase B.E.Facey J.P.Morioka T.Corbett H.,Barlow B.N.Kupfer T.Law N.M.Ratzloff J.K.Howard W.S.Chavez R.G.,Glazier A.Soto A.V.Horiuchi T.2022-03-14T07:11:01Z2021-11-09T06:27:07ZCDS support team

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

cds-question@unistra.frnovaeinfrared-photometryvisible-astronomyWe present optical and infrared photometry of the classical nova V906 Car, also known as Nova Car 2018 and ASASSN-18fv, which was discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN) on 2018 March 16.32 UT (MJD 58193.0). The nova reached its maximum on MJD 58222.56 at Vmax=5.84{+/-}0.09mag, and had decline times of t_2,V_=26.2days and t_3,V_=33.0days. The data from Evryscope shows that the nova had already brightened to g'~13mag five days before discovery, as compared with its quiescent magnitude of g=20.13{+/-}0.03. The extinction toward the nova, as derived from high-resolution spectroscopy, shows an estimate consistent with foreground extinction to the Carina Nebula of A_V_=1.11_-0.39_^+0.54^. The light curve resembles a rare C (cusp) class nova with a steep decline slope of {alpha}=-3.94 post-cusp flare. From the light-curve decline rate, we estimate the mass of the white dwarf to be MWD=<0.8M{sun}, consistent with M_WD_=0.71_-0.19_^+0.23^ derived from modeling the accretion disk of the system in quiescence. The donor star is likely a K-M dwarf of 0.23-0.43M_{odot}, which is heated by its companion.2020ApJ...899..162Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/899/162CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/183 : UBVRI Photometric Standards (Landolt 1992)I/322 : UCAC4 Catalogue (Zacharias+, 2012)II/341 : VPHAS+ DR2 survey (Drew+, 2016)I/337 : Gaia DR1 (Gaia Collaboration, 2016)I/345 : Gaia DR2 (Gaia Collaboration, 2018)II/358 : SkyMapper Southern Sky Survey. DR1.1 (Wolf+, 2018)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/AJ/140/34 : Classification of nova light curves (Strope+, 2010)J/AJ/143/41 : UBVIc CCD photometry of star clusters Tr14 & Tr16 (Hur+, 2012)J/MNRAS/440/2036 : VPHAS+ survey synthetic colours (Drew+, 2014)J/A+A/572/A116 : The VISTA Carina Nebula Survey (Preibisch+, 2014)J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)J/ApJS/227/1 : HST survey for novae in M87. I. VI LCs (Shara+, 2016)J/ApJ/863/90 : Optical and NIR LCs of the nearby SN 2017cbv (Wee+, 2018)http://www.astronomy.ohio-state.edu/ANDICAM/detectors.html : ANDICAM parametershttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/899/162https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/899/162http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/899/162https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/899/162https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/899/162http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/899/162GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap2.367228618189496e-19 4.920466254354166e-19OpticalInfrareddefaultJ/ApJ/899/162/fig3aANDICAM + CTIO Yale SMARTS 1.3m Telescope IR light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[58204/58329] Modified Julian Date; JD-2400000.5dtime.epochdoubleJmag[3.92/6.83] J band ANDICAM/1.3m magnitudemagphot.mag;em.IR.Jfloate_Jmag[0.03/0.2] Uncertainty in Jmagmagstat.error;phot.magfloatHmag[3.59/5.97] H band ANDICAM/1.3m magnitudemagphot.mag;em.IR.Hfloate_Hmag[0.04/0.4] Uncertainty in Hmagmagstat.error;phot.magfloatKmag[3.31/4.26] K band ANDICAM/1.3m magnitudemagphot.mag;em.IR.Kfloate_Kmag[0.05/0.2] Uncertainty in Kmagmagstat.error;phot.magfloatJ/ApJ/899/162/fig3bANDICAM + CTIO Yale SMARTS 1.3m Telescope optical light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[58203/58329] Modified Julian Date; JD-2400000.5dtime.epochdoubleBmag[6.34/10.2] Johnson B band ANDICAM/1.3m magnitudemagphot.mag;em.opt.BfloatE_Bmag[0.06/0.09] Upper uncertainty in Bmagmagstat.error;stat.maxfloate_Bmag[0.06/0.09] Lower uncertainty in Bmagmagstat.error;phot.magfloatVmag[5.78/9.77] Johnson V band ANDICAM/1.3m magnitudemagphot.mag;em.opt.VfloatE_Vmag[0.04/0.06] Upper uncertainty in Vmagmagstat.error;stat.maxfloate_Vmag[0.04/0.06] Lower uncertainty in Vmagmagstat.error;phot.magfloatRmag[4.9/7.8] Cousins R band ANDICAM/1.3m magnitudemagphot.mag;em.opt.RfloatE_Rmag[0.05/0.06] Upper uncertainty in Rmagmagstat.error;stat.maxfloate_Rmag[0.05/0.06] Lower uncertainty in Rmagmagstat.error;phot.magfloatImag[4.36/7.92] Cousins I band ANDICAM/1.3m magnitudemagphot.mag;em.opt.IfloatE_Imag[0.06/0.08] Upper uncertainty in Imagmagstat.error;stat.maxfloate_Imag[0.06/0.08] Lower uncertainty in Imagmagstat.error;phot.magfloatJ/ApJ/899/162/fig4g' band Evryscope light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[58192/58199] Modified Julian Date, JD-2400000.5dtime.epochdoublegmag[9.22/13.6] g'-band Evryscope magnitudemagphot.mag;em.opt.Rfloate_gmag[0/0.97] Uncertainty in g'magmagstat.error;phot.magfloat