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EXTENSIVE SPECTROSCOPY AND PHOTOMETRY OF THE TYPE IIP SUPERNOVA 2013ej

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dc.contributor.author Dhungana, G.
dc.contributor.author Kehoe, R.
dc.contributor.author Vinko, J.
dc.contributor.author Silverman, J. M.
dc.contributor.author Wheeler, J. C.
dc.contributor.author Zheng, W.
dc.contributor.author Marion, G. H.
dc.contributor.author Fox, O. D.
dc.contributor.author Akerlof, C.
dc.contributor.author Biro, B. I.
dc.contributor.author Borkovits, T.
dc.contributor.author Cenko, S. B.
dc.contributor.author Clubb, K. I.
dc.contributor.author Filippenko, A. V.
dc.contributor.author Ferrante, F. V.
dc.contributor.author Gibson, C. A.
dc.contributor.author Graham, M. L.
dc.contributor.author Hegedus, T.
dc.contributor.author Kelly, P.
dc.contributor.author Kelemen, J.
dc.contributor.author Lee, W. H.
dc.contributor.author Marschalko, G.
dc.contributor.author Molnár, L.
dc.contributor.author Nagy, A. P.
dc.contributor.author Ordasi, A.
dc.contributor.author Pal, A.
dc.contributor.author Sarneczky, K.
dc.contributor.author Shivvers, I.
dc.contributor.author Szakats, R.
dc.contributor.author Szalai, T.
dc.contributor.author Szegedi-Elek, E.
dc.contributor.author Székely, P.
dc.contributor.author Szing, A.
dc.contributor.author Takáts, K.
dc.contributor.author Vida, K.
dc.date.accessioned 2016-06-23T20:44:44Z
dc.date.available 2016-06-23T20:44:44Z
dc.date.issued 2016
dc.identifier.citation The Astrophysical Journal, Volume 822, Number 1 es
dc.identifier.issn 0004-637X
dc.identifier.other DOI: 10.3847/0004-637X/822/1/6
dc.identifier.uri http://repositorio.unab.cl/xmlui/handle/ria/838
dc.description Indexación: Web of Science es
dc.description.abstract We 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.uri http://iopscience.iop.org/article/10.3847/0004-637X/822/1/6/meta
dc.language.iso en es
dc.publisher IOP PUBLISHING es
dc.subject Galaxies: distances and redshifts es
dc.subject Supernovae: general es
dc.subject Supernovae: individual (SN 2013ej) es
dc.subject Techniques: photometric es
dc.subject EXPANDING PHOTOSPHERE METHOD es
dc.subject CORE-COLLAPSE SUPERNOVAE es
dc.subject DIGITAL SKY SURVEY es
dc.subject LIGHT-CURVES es
dc.subject P SUPERNOVAE es
dc.subject SN 2013EJ es
dc.subject DISTANCE DETERMINATION es
dc.subject PLATEAU SUPERNOVAE es
dc.subject SHOCK BREAKOUT es
dc.subject ULTRAVIOLET SPECTROSCOPY es
dc.title EXTENSIVE SPECTROSCOPY AND PHOTOMETRY OF THE TYPE IIP SUPERNOVA 2013ej es
dc.type Article es


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