Uncovering a Supernova Remnant Hidden Near LMCX-1
Abstract
In a kinematic study of LMC \hii\ regions, we serendipitously found a fast-expanding (velocity offsets up to $\sim$200 \kms) shell in the northern lobe of the luminous \hii\ region N159. The expansion pattern and the \sii/\ha\ ratio of the shell are consistent with those seen in supernova remnants (SNRs). Confirmation of this SNR candidate in radio and X-ray wavelengths has been hampered by thermal emission of the luminous \hii\ region N159 itself and scattered X-rays from the nearby luminous source LMC\,X-1. Recent {\em ROSAT} observations finally resolved N159 from LMC\,X-1, thus confirming the identification of this as a newly identified SNR, which we designate as SNR 0540$-$697. (SECTION: Interstellar Medium and Nebulae)
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- May 1997
- DOI:
- 10.1086/133913
- Bibcode:
- 1997PASP..109..554C
- Keywords:
-
- SUPERNOVA REMNANTS;
- HII REGIONS;
- MAGELLANIC CLOUDS