J/MNRAS/447/1661ivo://CDS.VizieR/J/MNRAS/447/1661doi:10.26093/cds/vizier.74471661CDSMunari U.Henden A.Banerjee D.P.K.Ashok N.M.Righetti G.L.,Dallaporta S.Cetrulo G.2024-08-14T20:19:34Z2019-11-06T10:13:36ZCDS support team

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

cds-question@unistra.frnovaeinfrared-photometryvisible-astronomybroad-band-photometryThe outburst of Nova Sgr 2011 N.2 (=V5588 Sgr) was followed with optical and near-IR photometric and spectroscopic observations for 3.5 yr, beginning shortly before the maximum. V5588 Sgr is located close to Galactic Centre, suffering from E(B-V)=1.56(+/-0.1) extinction. The primary maximum was reached at V=12.37 on UT 2011 April 2.5(+/-0.2), and the underlying smooth decline was moderately fast with t^V^_2_=38 and t^V^_3_=77 d. On top of an otherwise normal decline, six self-similar, fast evolving and bright secondary maxima (SdM) appeared in succession. Only very few other novae have presented so clear SdM. Both the primary maximum and all SdM occurred at later times with increasing wavelengths, by amounts in agreement with expectations from fireball expansions. The radiative energy released during SdM declined following an exponential pattern, while the breadth of individual SdM and the time interval between them widened. Emission lines remained sharp (FWHM~1000 km/s) throughout the whole nova evolution, with the exception of a broad pedestal with a trapezoidal shape ({Delta}vel=3600 km/s at the top and 4500 km/s at the bottom) which was only seen during the advanced decline from SdM maxima and was absent in between SdM. V5588 Sgr at maximum light displayed a typical FeII-class spectrum which did not evolve into a nebular stage. About 10 d into the decline from primary maximum, a typical high-ionization He/N-class spectrum appeared and remained visible simultaneously with the FeII-class spectrum, qualifying V5588 Sgr as a rare hybrid nova. While the FeII-class spectrum faded into oblivion, the He/N-class spectrum developed strong [FeX] coronal lines.2015MNRAS.447.1661Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/447/1661CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/vsx : AAVSO International Variable Star Index VSXJ/AJ/137/4186 : UBVRI standards around celestial equator (Landolt, 2009)J/AJ/140/34 : Classification of nova light curves (Strope+, 2010)J/A+A/554/A123 : Near-IR catalog of novae in VVV survey area (Saito+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/447/1661https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/447/1661http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/447/1661https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/447/1661https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/447/1661http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/447/1661GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap2.367228618189496e-19 4.920466254354166e-19OpticalInfrareddefaultJ/MNRAS/447/1661/table1BVR_C_I_C_ photometry of V5588 SgrrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoubleTelTelescope identifiermeta.id;instr.telcharVmag[11.304/17.667] V band magnitudemagphot.mag;em.opt.Vfloate_Vmag[0.002/0.118] Uncertainty in Vmagmagstat.error;phot.mag;em.opt.VfloatB-V[1.114/2.03]? B-V colour indexmagphot.color;em.opt.B;em.opt.Vfloatnullablee_B-V[0.003/0.261]? Uncertainty in B-Vmagstat.error;phot.color;em.opt.BfloatnullableV-Rc[1.389/3.697]? V-R_c_ colour indexmagphot.color;em.opt.V;em.opt.Rfloatnullablee_V-Rc[0.001/0.121]? Uncertainty in V-Rcmagstat.error;phot.color;em.opt.VfloatnullableV-Ic[1.841/3.115]? V-I_c_ colour indexmagphot.color;em.opt.V;em.opt.Ifloatnullablee_V-Ic[0.004/0.125]? Uncertainty in V-Icmagstat.error;phot.color;em.opt.VfloatnullableBmag[13.194/17.624]? B band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag[0.005/0.109]? Uncertainty in Bmagmagstat.error;phot.mag;em.opt.BfloatnullableRcmag[9.917/13.856]? R_c_ band magnitudemagphot.mag;em.opt.Rfloatnullablee_Rcmag[0.002/0.018]? Uncertainty in Rcmagmagstat.error;phot.mag;em.opt.RfloatnullableIcmag[9.08/13.952]? I_c_ band magnitudemagphot.mag;em.opt.Ifloatnullablee_Icmag[0.002/0.025]? Uncertainty in Icmagmagstat.error;phot.mag;em.opt.Ifloatnullable