Spatially Resolved Chandra Spectroscopy of Supernova Remnant DEM L71 in
  the Large Magellanic Cloud
  We present a detailed X-ray spectroscopic study of the supernova remnant DEM
L71 in the Large Magellanic Cloud. Based on deep $\sim 103$ ks archival {\it
Chandra} data, we perform a detailed spatially resolved spectral analysis of
DEM L71. We analyze regional spectra extracted from thin-sliced regions along
several different azimuthal directions of the SNR to construct radial profiles
of elemental abundances for O, Ne, Mg, Si, and Fe. Our elemental abundance
measurements reveal an asymmetrical spatial distribution of metal-rich ejecta
gas. Especially the asymmetry on the western part of the central Fe
distribution is remarkable. While the location of the contact discontinuity is
generally at $\sim 5$ pc from the geometric center of the X-ray emission of DEM
L71, it is uncertain in western part of the remnant. Fe is enhanced in the
ejecta while O and Ne abundances are generally negligible. This finding
confirms the Type Ia origin of DEM L71. We estimate an upper limit on the Sedov
age of $\sim 6,660\pm 770$ yr and explosion energy of $\sim 1.74\pm 0.35\times
10^{51}$ erg for the remnant. This explosion energy estimate is consistent with
a canonical explosion of a Type Ia supernova remnant.
