J/MNRAS/433/1871ivo://CDS.VizieR/J/MNRAS/433/1871doi:10.26093/cds/vizier.74331871CDSBose S.Kumar B.Sutaria F.Kumar B.Roy R.Bhatt V.K.Pandey S.B.,Chandola H.C.Sagar R.Misra K.Chakraborti S.2024-07-22T20:13:14Z2015-02-26T14:31:29ZCDS support team

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

cds-question@unistra.frsupernovaeinfrared-photometryvisible-astronomybroad-band-photometrysloan-photometryWe present densely sampled UBVRI/griz photometric and low-resolution (6-10{AA}) optical spectroscopic observations from 4 to 270d after explosion of a newly discovered Type II SN 2012aw in a nearby (~9.9Mpc) galaxy M95. The light-curve characteristics of apparent magnitudes, colours, bolometric luminosity and the presence and evolution of prominent spectral features are found to have striking similarity with the archetypal IIP SNe 1999em, 1999gi and 2004et. The early time observations of SN 2012aw clearly detect minima in the light curve of V, R and I bands near 37d after explosion and this we suggest to be an observational evidence for emergence of recombination phase. The mid-plateau M_V_ magnitude (-16.67+/-0.04) lies in between the bright (~-18) and subluminous (~-15) IIP SNe. The mass of nickel is 0.06+/-0.01M{sun}. The synow modelling of spectra indicate that the value and evolution of the photospheric velocity is similar to SN 2004et, but about ~600km/s higher than that of SNe 1999em and 1999gi at comparable epochs. This trend is more apparent in the line velocities of H{alpha} and H{beta}. A comparison of ejecta velocity properties with that of existing radiation-hydrodynamical simulations indicate that the energy of explosion lies in the range 1-2x10^51^ergs; a further comparison of nebular phase [OI] doublet luminosity with SNe 2004et and 1987A indicate that the mass of progenitor star is about 14 to 15M_{sun}_. The presence of high-velocity absorption features in the mid-to-late plateau and possibly in early phase spectra show signs of interaction between ejecta and the circumstellar matter; being consistent with its early time detection at X-ray and radio wavebands.2013MNRAS.433.1871Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/433/1871CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/433/1871https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/433/1871http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/433/1871https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/433/1871https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/433/1871http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/433/1871GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap2.040811542443644e-19 6.118840631666147e-19OpticalInfrareddefaultJ/MNRAS/433/1871/table3aPhotometric evolution of SN 2012aw, UBVRITelTelescope (G1)meta.id;instr.telcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObs.DateObservation date (YYYY-MM-DD.dd)time.epoch;obscharJD[6/272] Julian date (JD-2456000)dtime.epochfloatPhase[4/269] Phase, with reference to the explosion epoch JD=2456002.59dtime.epochintUmag? Johnson U magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? 1{sigma} rms error on Umagmagstat.error;phot.mag;em.opt.UfloatnullableBmag? Johnson B magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? 1{sigma} rms error on Bmagmagstat.error;phot.mag;em.opt.BfloatnullableVmag? Johnson V magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? 1{sigma} rms error on Vmagmagstat.error;phot.mag;em.opt.VfloatnullableRcmag? Cousins R magnitudemagphot.mag;em.opt.Rfloatnullablee_Rcmag? 1{sigma} rms error on Rcmagmagstat.error;phot.mag;em.opt.RfloatnullableIcmag? Cousins I magnitudemagphot.mag;em.opt.Ifloatnullablee_Icmag? 1{sigma} rms error on Icmagmagstat.error;phot.mag;em.opt.IfloatnullableSeeFWHM of the median stellar PSF at V-band framearcsecinstr.det.psf;stat.medianfloatJ/MNRAS/433/1871/table3bPhotometric evolution of SN 2012aw, grizrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObs.DateObservation date (YYYY-MM-DD.dd)time.epoch;obscharJDJulian date (JD-2456000)dtime.epochfloatPhasePhase, with reference to the explosion epoch JD=2456002.59dtime.epochintgmag? SDSS g magnitudemagphot.mag;em.opt.Bfloatnullablee_gmag? 1{sigma} rms error on gmagmagstat.error;phot.mag;em.opt.Bfloatnullablermag? SDSS r magnitudemagphot.mag;em.opt.Rfloatnullablee_rmag? 1{sigma} rms error on rmagmagstat.error;phot.mag;em.opt.Rfloatnullableimag? SDSS i magnitudemagphot.mag;em.opt.Ifloatnullablee_imag? 1{sigma} rms error on imagmagstat.error;phot.mag;em.opt.Ifloatnullablezmag? SDSS z magnitudemagphot.mag;em.opt.Ifloatnullablee_zmag? 1{sigma} rms error on zmagmagstat.error;phot.mag;em.opt.IfloatnullableTelTelescope (G1)meta.id;instr.telcharSeeFWHM of the median stellar PSF at V-band framearcsecinstr.det.psf;stat.medianfloat