S^4MC Observations of Dust in the Small Magellanic Cloud Supernova Remnant 1E 0102.2-7219

Details S^4MC Observations of Dust in the Small Magellanic Cloud Supernova Remnant 1E 0102.2-7219 S^4MC Observations of Dust in the Small Magellanic Cloud Supernova Remnant 1E 0102.2-7219

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009eimw.confe..58s&link_type=abstract

"The Evolving ISM in the Milky Way and Nearby Galaxies, The Fourth Spitzer Science Center Conference, Proceedings of the confere

Physics

Galaxies: Ism, Infrared: Galaxies, Infrared: Ism, Ism: Dust, Extinction, Ism: Structure

Scientific paper

The quantity and composition of dust produced in core-collapse supernovae is a matter of much debate. Observations of dust around quasars at high redshift have been explained via models invoking efficient dust production, with typical yields of 0.1-1 msol\ of dust per supernova. Observations of supernovae and their remnants, however, have yet to provide evidence for efficient dust production. Observations by Stanimirović et al. (2005) of the young, oxygen rich, supernova remnant 1E 0102.2-7219 in the Small Magellanic Cloud placed an upper limit on the dust produced in the supernova of 8× 10-4 msol, far less than the amount predicted by models. We present 5-35 micron IRS spectral mapping observations of SNR E 0102 obtained as part of the Spitzer Spectroscopic Survey of the Small Magellanic Cloud (S^4MC). The spectral information allows us to quantify the contribution of the [O IV] emission line at 25.8 micron to the 24 micron MIPS flux--a major source of uncertainty for Stanimirović et al.--to be ˜ 10 % of the total 24 micron flux. From fits to the spectral continuum we find on the order of 5× 10-4 msol\ of sim 110 K dust in the remnant. We compare the spatial distribution of the hot dust continuum with that of to the line emission and infer the physical conditions in the remnant. We also discuss the composition of the hot dust as revealed by the infrared spectrum.

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