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The high-metallicity explosion environment of the relativistic supernova 2009bb1

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dc.contributor.author Levesque, E. M.
dc.contributor.author Soderberg, A. M.
dc.contributor.author Foley, R. J.
dc.contributor.author Berger, E.
dc.contributor.author Kewley, L. J.
dc.contributor.author Chakraborti, A. Ray
dc.contributor.author Torres, M. A. P.
dc.contributor.author Challis, P.
dc.contributor.author Kirshner, R. P.
dc.contributor.author Barthelmy, S. D.
dc.contributor.author Bietenholz, M. F.
dc.contributor.author Chandra, P.
dc.contributor.author Chaplin, V.
dc.contributor.author Chevalier, R. A.
dc.contributor.author Chugai, N.
dc.contributor.author Connaughton, V.
dc.contributor.author Copete, A.
dc.contributor.author Fox, O.
dc.contributor.author Fransson, C.
dc.contributor.author Grindlay, J. E.
dc.contributor.author Hamuy, M. A.
dc.contributor.author Milne, P. A.
dc.contributor.author Pignata, G.
dc.contributor.author Stritzinger, M. D.
dc.contributor.author Wieringa, M. H.
dc.date.accessioned 2013-10-22T18:50:33Z
dc.date.accessioned 2016-05-24T20:13:27Z
dc.date.available 2013-10-22T18:50:33Z
dc.date.available 2016-05-24T20:13:27Z
dc.date.issued 2011
dc.identifier.uri http://repositorio.unab.cl/xmlui/handle/ria/1915
dc.description.abstract We investigate the environment of the nearby (d 40 Mpc) broad-lined Type Ic supernova SN 2009bb. This event was observed to produce a relativistic outflow likely powered by a central accreting compact object. While such a phenomenon was previously observed only in long-duration gamma-ray bursts (LGRBs), no LGRB was detected in association with SN 2009bb. Using an optical spectrum of the SN 2009bb explosion site, we determine a variety of ISM properties for the host environment, including metallicity, young stellar population age, and star formation rate. We compare the SN explosion site properties to observations of LGRB and broad-lined SN Ic host environments on optical emission line ratio diagnostic diagrams. Based on these analyses, we find that the SN 2009bb explosion site has a metallicity between 1.7Z⊙ and 3.5Z⊙, in agreement with other broadined SN Ic host environments and at odds with the low-redshift LGRB host environments and recently proposed maximum metallicity limits for relativistic explosions. We consider the implications of these findings and the impact that SN 2009bb’s unusual explosive properties and environment have on our understanding of the key physical ingredient that enables some SNe to produce a relativistic outflow. en
dc.language.iso en
dc.subject Supernovae: individual (SN 2009bb)
dc.subject Galaxies: ISM
dc.subject Gamma rays: bursts
dc.title The high-metallicity explosion environment of the relativistic supernova 2009bb1
dc.type Artículo de revista

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