AAS 207th Meeting, 8-12 January 2006
Session 132 Views of the Magellanic Clouds Across Wavelengths
Poster, Wednesday, 9:20am-6:30pm, January 11, 2006, Exhibit Hall

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[132.12] Supernova Remnants in the N19 Complex of the Small Magellanic Cloud

R.N.M. Williams, Y.-H. Chu, C-H. R. Chen, R. A. Gruendl (Univ. Illinois at Urbana-Champaign), S. D. Points, R. C. Smith (CTIO/NOAO)

We have analyzed Chandra data for supernova remnants (SNRs) within the N19 H~{\small II} complex in the Small Magellanic Cloud, supplemented by optical emission-line images and echelle spectroscopy. Our observations include the known SNR MCRX J0047.2-7308 (SNR B0045-73.4), confirm the SNR candidate MCRX J0046.6-7308 (SNR B0045-7325), and strengthen the case for a large, extended SNR identified as candidate MCRX J0047.5-7308.

We find that the abundances inferred from spectral model fits to the X-ray emission from these SNRs and SNR candidates are consistent in each case with remnants of massive-star progenitors. We observe a possible point source within J0047.2-7308, embedded in a region of hard emission, suggestive of a possible embedded PWN. As these three remnants, all with massive-star origins, appear to be spatially located within the N19 H~{\small II} complex, we infer that a small OB association may be the source of these phenomena. To expand on this assessment, we estimate the number of massive stars within N19 and project their energy input to the region. We find that a stellar-wind created superbubble is unlikely to have formed, but that the further expansion of the SNRs in the region may lead to superbubble formation on a timescale of < 0.3 Myr from the first supernova.

RMW gratefully acknowledges support from SAO grant G03-4094A, and NASA grant NNG05GC97G issued through the LTSA Program.

If you would like more information about this abstract, please follow the link to http://www.astro.uiuc.edu/~rosanina/preprints.html. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: rosanina@astro.uiuc.edu

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