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    A newly recognized very young supernova remnant in M83

    238109_238109.pdf (935.6Kb)
    Access Status
    Open access
    Authors
    Blair, W.
    Winkler, P.
    Long, K.
    Whitmore, B.
    Kim, H.
    Soria, Roberto
    Kuntz, K.
    Plucinsky, P.
    Dopita, M.
    Stockdale, C.
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Blair, W. and Winkler, P. and Long, K. and Whitmore, B. and Kim, H. and Soria, R. and Kuntz, K. et al. 2015. A newly recognized very young supernova remnant in M83. Astrophysical Journal. 800 (2).
    Source Title
    Astrophysical Journal
    DOI
    10.1088/0004-637X/800/2/118
    ISSN
    0004-637X
    School
    Department of Physics and Astronomy
    Remarks

    This is an author-created, un-copy edited version of an article accepted for publication in Astrophysical Journal. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://doi.org/10.1088/0004-637X/800/2/118

    URI
    http://hdl.handle.net/20.500.11937/17774
    Collection
    • Curtin Research Publications
    Abstract

    As part of a spectroscopic survey of supernova remnant candidates in M83 using the Gemini-South telescope and Gemini Multi-Object Spectrograph, we have discovered one object whose spectrum shows very broad lines at Hα, [O I] λλ6300, 6363, and [O III] λλ4959, 5007, similar to those from other objects classified as "late time supernovae". Although six historical supernovae have been observed in M83 since 1923, none were seen at the location of this object. Hubble Space Telescope (HST) Wide Field Camera 3 images show a nearly unresolved emission source, while Chandra and ATCA data reveal a bright X-ray source and nonthermal radio source at the position. Objects in other galaxies showing similar spectra are only decades post-supernova, which raises the possibility that the supernova that created this object occurred during the last century but was missed. Using photometry of nearby stars from the HST data, we suggest the precursor was at least 17 M ☉, and the presence of broad Hα in the spectrum makes a type II supernova likely. The supernova must predate the 1983 Very Large Array radio detection of the object. We suggest examination of archival images of M83 to search for evidence of the supernova event that gave rise to this object, and thus provide a precise age.

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