Uncovering a supernova remnant hidden near LMC X-1

You Hua Chu, Robert C. Kennicutt, Steven L. Snowden, R. Chris Smith, Rosa Murphy Williams, Dominik J. Bomans

Research output: Contribution to journalArticlepeer-review


In a kinematic study of LMC H II regions, we serendipitously found a fast-expanding (velocity offsets up to ∼200 km s-1) shell in the northern lobe of the luminous H II region N159. The expansion pattern and the [S II]/Hα ratio of the shell are consistent with those seen in supernova remnants (SNRs). Confirmation of this SNR candidate in radio and X-ray wavelengths has been hampered by thermal emission of the luminous H II region N159 itself and scattered X rays from the nearby luminous source LMCX-1. Recent ROSAT observations finally resolved N159 from LMCX-1, thus confirming the identification of this as a newly identified SNR, which we designate as SNR 0540-697.

Original languageEnglish (US)
Pages (from-to)554-558
Number of pages5
JournalPublications of the Astronomical Society of the Pacific
Issue number735
StatePublished - May 1997

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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