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

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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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