SIMBAD references

2010AJ....140..177S - Astron. J., 140, 177-183 (2010/July-0)

A Chandra observation of SNR 0540-697.

SEWARD F.D., WILLIAMS R.M., CHU Y.-H., GRUENDL R.A. and DICKEL J.R.

Abstract (from CDS):

This paper describes a Chandra observation of SNR 0540-697 within the H II complex N159 in the Large Magellanic Cloud (LMC). Scattering from the nearby bright source LMC X-1, which obscures the western edge of the remnant, has been removed. Larger than previously believed, the 2'.0x2'.8 remnant is defined by optical filaments and two lobes of X-ray emission. A band of intervening material absorbs X-rays from the central part of the remnant. The N Lobe of the remnant is relatively bright and well defined, while emission from the S Lobe is much weaker. There is structure within the N Lobe but no clear X-ray emission from an outer shell indicating a shock in the interstellar medium. The X-ray spectrum is thermal with emission lines from Fe, Mg, and Si. The observed temperature and luminosity of the hot gas are 0.6 keV and 6x1035 erg/s, respectively. These are consistent with characteristics expected for older remnants. There is also diffuse thermal X-ray emission north of N159 extending into N160, evidence for a larger remnant or bubble.

Abstract Copyright:

Journal keyword(s): dust, extinction - H II regions - ISM: supernova remnants - Magellanic Clouds - techniques: image processing - X-rays: individual: SNR 0540-697

Simbad objects: 17

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