Mathematics – Logic
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21943911r&link_type=abstract
American Astronomical Society, AAS Meeting #219, #439.11
Mathematics
Logic
Scientific paper
We report on the statistical analyses of three morphologically asymmetric low-count supernova remnants, designated IKT 5, IKT 25, and DEM S 128 in the Small Magellanic Cloud (SMC). These remnants have been previously identified as Type Ia candidates based on the presumed overabundance of iron in their XMM CCD spectra. We have used archived Chandra data to perform spectral analyses on these three remnants. Their tentative Type Ia designation and morphological asymmetry is in contrast to more recent findings that soft x-ray morphology is generally more symmetric in Type Ia remnants in the Large Magellanic Cloud and Milky Way. We combine the Chandra data with Spitzer data to show that the morphology is affected by complicated environmental interactions with these remnants. Moreover, by performing a maximum-likelihood analysis fitting technique on the soft X-ray spectra of these remnants, we find that these remnants are dominated by surrounding ISM emission, as opposed to being iron ejecta-dominated, as expected for younger Type Ia supernova remnants.
DeRoo Cailah
McEntaffer Randall
Roper Quentin
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