Two new x-ray/optical/radio supernova remnants in M31

Benjamin F. Williams, Loránt O. Sjouwerman, Albert K H Kong, Joseph (Yosi) Gelfand, Michael R. Garcia, Stephen S. Murray

    Research output: Contribution to journalArticle

    Abstract

    We compare a deep (37 ks) Chandra ACIS-S image of the M31 bulge to Local Group Survey narrowband optical data and Very Large Array (VLA) radio data of the same region. Our precisely registered images reveal two new optical shells with X-ray counterparts. These shells have sizes, [S II]/Hα flux ratios, and X-ray spectral properties typical of supernova remnants (SNRs) with ages of 9-4 +3 and 17-9 +6 kyr. Analysis of complementary VLA data reveals the radio counterparts, further confirming that they are SNRs. We discuss and compare the properties and morphologies of these SNRs at the different wavelengths.

    Original languageEnglish (US)
    Pages (from-to)720-726
    Number of pages7
    JournalAstrophysical Journal
    Volume615
    Issue number2 I
    DOIs
    StatePublished - Nov 10 2004

    Fingerprint

    supernova remnants
    Very Large Array (VLA)
    radio
    shell
    x rays
    narrowband
    wavelength
    wavelengths

    Keywords

    • Galaxies: individual (M31)
    • Supernova remnants
    • Techniques: image processing

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Nuclear and High Energy Physics

    Cite this

    Williams, B. F., Sjouwerman, L. O., Kong, A. K. H., Gelfand, J. Y., Garcia, M. R., & Murray, S. S. (2004). Two new x-ray/optical/radio supernova remnants in M31. Astrophysical Journal, 615(2 I), 720-726. https://doi.org/10.1086/424589

    Two new x-ray/optical/radio supernova remnants in M31. / Williams, Benjamin F.; Sjouwerman, Loránt O.; Kong, Albert K H; Gelfand, Joseph (Yosi); Garcia, Michael R.; Murray, Stephen S.

    In: Astrophysical Journal, Vol. 615, No. 2 I, 10.11.2004, p. 720-726.

    Research output: Contribution to journalArticle

    Williams, BF, Sjouwerman, LO, Kong, AKH, Gelfand, JY, Garcia, MR & Murray, SS 2004, 'Two new x-ray/optical/radio supernova remnants in M31', Astrophysical Journal, vol. 615, no. 2 I, pp. 720-726. https://doi.org/10.1086/424589
    Williams BF, Sjouwerman LO, Kong AKH, Gelfand JY, Garcia MR, Murray SS. Two new x-ray/optical/radio supernova remnants in M31. Astrophysical Journal. 2004 Nov 10;615(2 I):720-726. https://doi.org/10.1086/424589
    Williams, Benjamin F. ; Sjouwerman, Loránt O. ; Kong, Albert K H ; Gelfand, Joseph (Yosi) ; Garcia, Michael R. ; Murray, Stephen S. / Two new x-ray/optical/radio supernova remnants in M31. In: Astrophysical Journal. 2004 ; Vol. 615, No. 2 I. pp. 720-726.
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    AU - Garcia, Michael R.

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