Uncovering A Supernova Remnant Hidden Near LMCX-1

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

In a kinematic study of LMC Hii regions, we serendipitously found a fast-expanding shell in the luminous Hii region N159. The expansion pattern and the [Sii]/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 Hii 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 the new SNR, designated SNR0540-697.

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