Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21725631r&link_type=abstract
American Astronomical Society, AAS Meeting #217, #256.31; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
Supernova Remnant (SNR) 0104-72.3 is a highly asymmetric SNR discovered in the Small Magellanic Cloud. Its metallicity-poor environment led Hughes and Smith et al. (1994) to conclude that 0104-72.3 was formed by a Type 2 supernova. However, in a recent Chandra observation, Fe-L emission was identified in the spectrum of 0104-72.3, and, when combined with its asymmetry, led Park et al. to conclude that 0104-72.3 was formed by a Type 1-a supernova. We, through this presentation, will support the findings of Park et al., and also introduce new results in the discovery of Ne IX ejecta emission, which is inconsistent with many of the extant explosion models of Type I-a supernovae. We will discuss the atypical nature of this SNR's birth, including the possibility of a doubly-degenerate merger of C-O white dwarves, or the possibility that this was formed by accretion onto an O-Ne-Mg white dwarf.
McEntaffer Randall L.
Roper Quentin
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