High Resolution Spectra of Extragalactic Supernova Remnants

Details High Resolution Spectra of Extragalactic Supernova Remnants High Resolution Spectra of Extragalactic Supernova Remnants

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop..259c&link_type=abstract

Chandra Proposal ID #01500036

Physics

Chandra Proposal Id #01500036

Scientific paper

E0102-72 and N132D are the brightest remnants in the SMC and LMC (respectively) and are the best SNR candidates for grating observations as they are distant enough to subtend a small angular size yet bright enough to allow reasonable integration times. The ASCA spectrum of E0102-72 shows lines of He-like emission from O, Ne, and Mg. The line ratios of these elements cannot be explained using models with uniform abundances. Previous high-resolution studies of N132D using the Einstein Focal Plane Crystal Spectrometer (FPCS) have shown an oxygen overabundance. We plan to use plasma diagnostics of individual emmission lines to map the temperature, ionization and abundance structures of these two remnants.

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