GALEX spectroscopy of SN 2005ay suggests ultraviolet spectral uniformity among Type II-P supernovae

A. Gal-Yam, F. Bufano, T. A. Barlow, E. Baron, S. Benetti, E. Cappellaro, P. J. Challis, R. S. Ellis, A. V. Filippenko, R. J. Foley, D. B. Fox, M. Hicken, R. P. Kirshner, D. C. Leonard, W. Li, D. Maoz, T. Matheson, P. A. Mazzali, M. Modjaz, K. NomotoE. O. Ofek, J. D. Simon, T. A. Small, G. P. Smith, M. Turatto, S. D. Van Dyk, L. Zampieri

    Research output: Contribution to journalArticle

    Abstract

    We present the initial results from our GALEX program designed to obtain ultraviolet (UV) spectra of nearby core-collapse supernovae (SNe). Our first target, SN 2005ay in the nearby galaxy NGC 3938, is a typical member of the SN II-P subclass. Our spectra show remarkable similarity to those of the prototypical Type II-P SN 1999em, and resemble also Swift observations of the recent Type II-P SN 2005cs. Taken together, the observations of these three events trace the UV spectral evolution of SNe II-P during the first month after explosion, as required in order to interpret optical observations of high-redshift SNe II-P, and to derive cross-filter K-corrections. While still highly preliminary, the apparent UV homogeneity of SNe II-P bodes well for the use of these events as cosmological probes at high redshift.

    Original languageEnglish (US)
    JournalAstrophysical Journal
    Volume685
    Issue number2 PART 2
    DOIs
    StatePublished - 2008

    Fingerprint

    supernovae
    spectroscopy
    homogeneity
    explosion
    probe
    filter
    ultraviolet spectra
    explosions
    galaxies
    filters
    probes
    programme

    Keywords

    • General
    • Individual (SN 2005ay)
    • Supernovae
    • Ultraviolet

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics

    Cite this

    Gal-Yam, A., Bufano, F., Barlow, T. A., Baron, E., Benetti, S., Cappellaro, E., ... Zampieri, L. (2008). GALEX spectroscopy of SN 2005ay suggests ultraviolet spectral uniformity among Type II-P supernovae. Astrophysical Journal, 685(2 PART 2). https://doi.org/10.1086/592744

    GALEX spectroscopy of SN 2005ay suggests ultraviolet spectral uniformity among Type II-P supernovae. / Gal-Yam, A.; Bufano, F.; Barlow, T. A.; Baron, E.; Benetti, S.; Cappellaro, E.; Challis, P. J.; Ellis, R. S.; Filippenko, A. V.; Foley, R. J.; Fox, D. B.; Hicken, M.; Kirshner, R. P.; Leonard, D. C.; Li, W.; Maoz, D.; Matheson, T.; Mazzali, P. A.; Modjaz, M.; Nomoto, K.; Ofek, E. O.; Simon, J. D.; Small, T. A.; Smith, G. P.; Turatto, M.; Van Dyk, S. D.; Zampieri, L.

    In: Astrophysical Journal, Vol. 685, No. 2 PART 2, 2008.

    Research output: Contribution to journalArticle

    Gal-Yam, A, Bufano, F, Barlow, TA, Baron, E, Benetti, S, Cappellaro, E, Challis, PJ, Ellis, RS, Filippenko, AV, Foley, RJ, Fox, DB, Hicken, M, Kirshner, RP, Leonard, DC, Li, W, Maoz, D, Matheson, T, Mazzali, PA, Modjaz, M, Nomoto, K, Ofek, EO, Simon, JD, Small, TA, Smith, GP, Turatto, M, Van Dyk, SD & Zampieri, L 2008, 'GALEX spectroscopy of SN 2005ay suggests ultraviolet spectral uniformity among Type II-P supernovae', Astrophysical Journal, vol. 685, no. 2 PART 2. https://doi.org/10.1086/592744
    Gal-Yam, A. ; Bufano, F. ; Barlow, T. A. ; Baron, E. ; Benetti, S. ; Cappellaro, E. ; Challis, P. J. ; Ellis, R. S. ; Filippenko, A. V. ; Foley, R. J. ; Fox, D. B. ; Hicken, M. ; Kirshner, R. P. ; Leonard, D. C. ; Li, W. ; Maoz, D. ; Matheson, T. ; Mazzali, P. A. ; Modjaz, M. ; Nomoto, K. ; Ofek, E. O. ; Simon, J. D. ; Small, T. A. ; Smith, G. P. ; Turatto, M. ; Van Dyk, S. D. ; Zampieri, L. / GALEX spectroscopy of SN 2005ay suggests ultraviolet spectral uniformity among Type II-P supernovae. In: Astrophysical Journal. 2008 ; Vol. 685, No. 2 PART 2.
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    AU - Gal-Yam, A.

    AU - Bufano, F.

    AU - Barlow, T. A.

    AU - Baron, E.

    AU - Benetti, S.

    AU - Cappellaro, E.

    AU - Challis, P. J.

    AU - Ellis, R. S.

    AU - Filippenko, A. V.

    AU - Foley, R. J.

    AU - Fox, D. B.

    AU - Hicken, M.

    AU - Kirshner, R. P.

    AU - Leonard, D. C.

    AU - Li, W.

    AU - Maoz, D.

    AU - Matheson, T.

    AU - Mazzali, P. A.

    AU - Modjaz, M.

    AU - Nomoto, K.

    AU - Ofek, E. O.

    AU - Simon, J. D.

    AU - Small, T. A.

    AU - Smith, G. P.

    AU - Turatto, M.

    AU - Van Dyk, S. D.

    AU - Zampieri, L.

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    N2 - We present the initial results from our GALEX program designed to obtain ultraviolet (UV) spectra of nearby core-collapse supernovae (SNe). Our first target, SN 2005ay in the nearby galaxy NGC 3938, is a typical member of the SN II-P subclass. Our spectra show remarkable similarity to those of the prototypical Type II-P SN 1999em, and resemble also Swift observations of the recent Type II-P SN 2005cs. Taken together, the observations of these three events trace the UV spectral evolution of SNe II-P during the first month after explosion, as required in order to interpret optical observations of high-redshift SNe II-P, and to derive cross-filter K-corrections. While still highly preliminary, the apparent UV homogeneity of SNe II-P bodes well for the use of these events as cosmological probes at high redshift.

    AB - We present the initial results from our GALEX program designed to obtain ultraviolet (UV) spectra of nearby core-collapse supernovae (SNe). Our first target, SN 2005ay in the nearby galaxy NGC 3938, is a typical member of the SN II-P subclass. Our spectra show remarkable similarity to those of the prototypical Type II-P SN 1999em, and resemble also Swift observations of the recent Type II-P SN 2005cs. Taken together, the observations of these three events trace the UV spectral evolution of SNe II-P during the first month after explosion, as required in order to interpret optical observations of high-redshift SNe II-P, and to derive cross-filter K-corrections. While still highly preliminary, the apparent UV homogeneity of SNe II-P bodes well for the use of these events as cosmological probes at high redshift.

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