Spectral identification of an ancient supernova using light echoes in the large magellanic cloud

A. Rest, T. Matheson, S. Blondin, M. Bergmann, D. L. Welch, N. B. Suntzeff, R. C. Smith, K. Olsen, J. L. Prieto, A. Garg, P. Challis, C. Stubbs, M. Hicken, M. Modjaz, W. M. Wood-Vasey, A. Zenteno, G. Damke, A. Newman, M. Huber, K. H. Cook & 9 others S. Nikolaev, A. C. Becker, A. Miceli, R. Covarrubias, L. Morelli, G. Pignata, A. Clocchiatti, D. Minniti, R. J. Foley

    Research output: Contribution to journalArticle

    Abstract

    We report the successful identification of the type of the supernova (SN) responsible for the supernova remnant SNR 0509-675 in the Large Magellanic Cloud (LMC) using Gemini spectra of surrounding light echoes. The ability to classify outbursts associated with centuries-old remnants provides a new window into several aspects of SN research and is likely to be successful in providing new constraints on additional LMC SNe, as well as their historical counterparts in the Milky Way (MW). The combined spectrum of echo light from SNR 0509-675 shows broad emission and absorption lines consistent with a SN spectrum. We create a spectral library consisting of 28 SNe Ia and 6 SNe Ib/c that are time-integrated, dust-scattered by LMC dust, and reddened by the LMC and MW. We fit these SN templates to the observed light echo spectrum using χ2 minimization, as well as correlation techniques, and we find that overluminous 1991 T-like SNe Ia with Δm15 < 0-9 match the observed spectrum best.

    Original languageEnglish (US)
    Pages (from-to)1137-1148
    Number of pages12
    JournalAstrophysical Journal
    Volume680
    Issue number2
    DOIs
    StatePublished - Jun 20 2008

    Fingerprint

    Magellanic clouds
    supernovae
    echoes
    dust
    supernova remnants
    outburst
    templates
    optimization

    Keywords

    • ISM: individual (SNR 0509-67.5)
    • Magellanic clouds
    • Supernova remnants
    • Supernovae: general

    ASJC Scopus subject areas

    • Space and Planetary Science

    Cite this

    Rest, A., Matheson, T., Blondin, S., Bergmann, M., Welch, D. L., Suntzeff, N. B., ... Foley, R. J. (2008). Spectral identification of an ancient supernova using light echoes in the large magellanic cloud. Astrophysical Journal, 680(2), 1137-1148. https://doi.org/10.1086/587158

    Spectral identification of an ancient supernova using light echoes in the large magellanic cloud. / Rest, A.; Matheson, T.; Blondin, S.; Bergmann, M.; Welch, D. L.; Suntzeff, N. B.; Smith, R. C.; Olsen, K.; Prieto, J. L.; Garg, A.; Challis, P.; Stubbs, C.; Hicken, M.; Modjaz, M.; Wood-Vasey, W. M.; Zenteno, A.; Damke, G.; Newman, A.; Huber, M.; Cook, K. H.; Nikolaev, S.; Becker, A. C.; Miceli, A.; Covarrubias, R.; Morelli, L.; Pignata, G.; Clocchiatti, A.; Minniti, D.; Foley, R. J.

    In: Astrophysical Journal, Vol. 680, No. 2, 20.06.2008, p. 1137-1148.

    Research output: Contribution to journalArticle

    Rest, A, Matheson, T, Blondin, S, Bergmann, M, Welch, DL, Suntzeff, NB, Smith, RC, Olsen, K, Prieto, JL, Garg, A, Challis, P, Stubbs, C, Hicken, M, Modjaz, M, Wood-Vasey, WM, Zenteno, A, Damke, G, Newman, A, Huber, M, Cook, KH, Nikolaev, S, Becker, AC, Miceli, A, Covarrubias, R, Morelli, L, Pignata, G, Clocchiatti, A, Minniti, D & Foley, RJ 2008, 'Spectral identification of an ancient supernova using light echoes in the large magellanic cloud', Astrophysical Journal, vol. 680, no. 2, pp. 1137-1148. https://doi.org/10.1086/587158
    Rest A, Matheson T, Blondin S, Bergmann M, Welch DL, Suntzeff NB et al. Spectral identification of an ancient supernova using light echoes in the large magellanic cloud. Astrophysical Journal. 2008 Jun 20;680(2):1137-1148. https://doi.org/10.1086/587158
    Rest, A. ; Matheson, T. ; Blondin, S. ; Bergmann, M. ; Welch, D. L. ; Suntzeff, N. B. ; Smith, R. C. ; Olsen, K. ; Prieto, J. L. ; Garg, A. ; Challis, P. ; Stubbs, C. ; Hicken, M. ; Modjaz, M. ; Wood-Vasey, W. M. ; Zenteno, A. ; Damke, G. ; Newman, A. ; Huber, M. ; Cook, K. H. ; Nikolaev, S. ; Becker, A. C. ; Miceli, A. ; Covarrubias, R. ; Morelli, L. ; Pignata, G. ; Clocchiatti, A. ; Minniti, D. ; Foley, R. J. / Spectral identification of an ancient supernova using light echoes in the large magellanic cloud. In: Astrophysical Journal. 2008 ; Vol. 680, No. 2. pp. 1137-1148.
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    AU - Blondin, S.

    AU - Bergmann, M.

    AU - Welch, D. L.

    AU - Suntzeff, N. B.

    AU - Smith, R. C.

    AU - Olsen, K.

    AU - Prieto, J. L.

    AU - Garg, A.

    AU - Challis, P.

    AU - Stubbs, C.

    AU - Hicken, M.

    AU - Modjaz, M.

    AU - Wood-Vasey, W. M.

    AU - Zenteno, A.

    AU - Damke, G.

    AU - Newman, A.

    AU - Huber, M.

    AU - Cook, K. H.

    AU - Nikolaev, S.

    AU - Becker, A. C.

    AU - Miceli, A.

    AU - Covarrubias, R.

    AU - Morelli, L.

    AU - Pignata, G.

    AU - Clocchiatti, A.

    AU - Minniti, D.

    AU - Foley, R. J.

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    N2 - We report the successful identification of the type of the supernova (SN) responsible for the supernova remnant SNR 0509-675 in the Large Magellanic Cloud (LMC) using Gemini spectra of surrounding light echoes. The ability to classify outbursts associated with centuries-old remnants provides a new window into several aspects of SN research and is likely to be successful in providing new constraints on additional LMC SNe, as well as their historical counterparts in the Milky Way (MW). The combined spectrum of echo light from SNR 0509-675 shows broad emission and absorption lines consistent with a SN spectrum. We create a spectral library consisting of 28 SNe Ia and 6 SNe Ib/c that are time-integrated, dust-scattered by LMC dust, and reddened by the LMC and MW. We fit these SN templates to the observed light echo spectrum using χ2 minimization, as well as correlation techniques, and we find that overluminous 1991 T-like SNe Ia with Δm15 < 0-9 match the observed spectrum best.

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