Supernova Remnants:  Then Again
	* Although significantly lower in spectral resolution than the earlier FPCS, the ASCA SIS covered a much broader spectral range, which opened up new diagnostic opportunities. * Hughes et al. showed that the raw ASCA spectra of young LMC remnants could be used to distinguish Type Ia explosions from Type II’s.  The Type Ia’s, as illustrated below are dominated by Fe L-shell and Si and S K emission, as opposed to the primary products of alpha-burning reactions (O, Ne, Mg).
				Hughes et al., 1995, Ap. J., 444, L81.