EXTENSIVE SPECTROSCOPY AND PHOTOMETRY OF THE TYPE IIP SUPERNOVA 2013ej

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dc.contributor.authorDhungana, G.
dc.contributor.authorKehoe, R.
dc.contributor.authorVinko, J.
dc.contributor.authorSilverman, J. M.
dc.contributor.authorWheeler, J. C.
dc.contributor.authorZheng, W.
dc.contributor.authorMarion, G. H.
dc.contributor.authorFox, O. D.
dc.contributor.authorAkerlof, C.
dc.contributor.authorBiro, B. I.
dc.contributor.authorBorkovits, T.
dc.contributor.authorCenko, S. B.
dc.contributor.authorClubb, K. I.
dc.contributor.authorFilippenko, A. V.
dc.contributor.authorFerrante, F. V.
dc.contributor.authorGibson, C. A.
dc.contributor.authorGraham, M. L.
dc.contributor.authorHegedus, T.
dc.contributor.authorKelly, P.
dc.contributor.authorKelemen, J.
dc.contributor.authorLee, W. H.
dc.contributor.authorMarschalko, G.
dc.contributor.authorMolnár, L.
dc.contributor.authorNagy, A. P.
dc.contributor.authorOrdasi, A.
dc.contributor.authorPal, A.
dc.contributor.authorSarneczky, K.
dc.contributor.authorShivvers, I.
dc.contributor.authorSzakats, R.
dc.contributor.authorSzalai, T.
dc.contributor.authorSzegedi-Elek, E.
dc.contributor.authorSzékely, P.
dc.contributor.authorSzing, A.
dc.contributor.authorTakáts, K.
dc.contributor.authorVida, K.
dc.date.accessioned2016-06-23T20:44:44Z
dc.date.available2016-06-23T20:44:44Z
dc.date.issued2016
dc.descriptionIndexación: Web of Sciencees
dc.description.abstractWe present extensive optical (UBV RI, g' r' i' z', and open CCD) and near-infrared (ZY JH) photometry for the very nearby Type IIP SN. 2013ej extending from + 1 to + 461 days after shock breakout, estimated to be MJD 56496.9 +/- 0.3. Substantial time series ultraviolet and optical spectroscopy obtained from + 8 to + 135 days are also presented. Considering well-observed SNe IIP from the literature, we derive UBV RIJHK bolometric calibrations from UBV RI and unfiltered measurements that potentially reach 2% precision with a B - V color-dependent correction. We observe moderately strong Si II lambda 6355 as early as + 8 days. The photospheric velocity (vph) is determined by modeling the spectra in the vicinity of Fe II lambda 5169 whenever observed, and interpolating at photometric epochs based on a semianalytic method. This gives vph= 4500. 500 km s(-1) at + 50 days. We also observe spectral homogeneity of ultraviolet spectra at + 10-12 days for SNe IIP, while variations are evident a week after explosion. Using the expanding photosphere method, from combined analysis of SN 2013ej and SN 2002ap, we estimate the distance to the host galaxy to be 9.0(-0.6)(+0.4) Mpc, consistent with distance estimates from other methods. Photometric and spectroscopic analysis during the plateau phase, which we estimated to be 94 +/- 7 days long, yields an explosion energy of 0.9 +/- 0.3 x 10(51) erg, a final pre-explosion progenitor mass of 15.2 +/- 4.2 M-circle dot and a radius of 250 +/- 70 R-circle dot. We observe a broken exponential profile beyond + 120 days, with a break point at + 183 +/- 16 days. Measurements beyond this break time yield a Ni-56 mass of 0.013 +/- 0.001. M-circle dot.es
dc.description.urihttp://iopscience.iop.org/article/10.3847/0004-637X/822/1/6/meta
dc.identifier.citationThe Astrophysical Journal, Volume 822, Number 1es
dc.identifier.issn0004-637X
dc.identifier.otherDOI: 10.3847/0004-637X/822/1/6
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/838
dc.language.isoenes
dc.publisherIOP PUBLISHINGes
dc.subjectGalaxies: distances and redshiftses
dc.subjectSupernovae: generales
dc.subjectSupernovae: individual (SN 2013ej)es
dc.subjectTechniques: photometrices
dc.subjectEXPANDING PHOTOSPHERE METHODes
dc.subjectCORE-COLLAPSE SUPERNOVAEes
dc.subjectDIGITAL SKY SURVEYes
dc.subjectLIGHT-CURVESes
dc.subjectP SUPERNOVAEes
dc.subjectSN 2013EJes
dc.subjectDISTANCE DETERMINATIONes
dc.subjectPLATEAU SUPERNOVAEes
dc.subjectSHOCK BREAKOUTes
dc.subjectULTRAVIOLET SPECTROSCOPYes
dc.titleEXTENSIVE SPECTROSCOPY AND PHOTOMETRY OF THE TYPE IIP SUPERNOVA 2013ejes
dc.typeArtículoes
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