SNRs in the Magellanic Clouds: a Clear and Complete Sample

Details SNRs in the Magellanic Clouds: a Clear and Complete Sample SNRs in the Magellanic Clouds: a Clear and Complete Sample

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.3502w&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #35.02; Bulletin of the American Astronomical Society, Vol. 34, p.691

Astronomy and Astrophysics

Astronomy

Scientific paper

Increases in resolution and sensitivity for current optical, radio, and X-ray instrumentation have had the practical effect of bringing the Magellanic Cloud samples of supernova remnants (SNRs) into ever better focus. We can now study these SNRs at levels of detail previously only available for Galactic remnants. While they have the advantages of extragalactic datasets (samples at known and roughly equal distances, low obscuration), they remain close enough for detailed examination. This makes the sample an ideal ``stepping-stone" for the study of remnants in more distant galaxies; findings for Magellanic Cloud SNRs can be meaningfully compared and extrapolated to those SNRs for which we do not posess such high resolutions. Furthermore, the Magellanic Cloud remnants posess features of compelling interest in themselves. A sub-population of the faintest SNRs - invisible in the Galaxy and most extragalactic samples due to obscuration, confusion, and/or lack of sensitivity - are actually discernable in the Clouds. This important group holds the most potential to reveal details of late-stage SNR evolution and the long-term fate of the hot gas produced within them. In additon, the Magellanic Cloud remnants have characteristics unique to each sample, such as the Small Magellanic Cloud SNRs thought to be associated with starburst activity (including three with Be stars) and the Large Magellanic Cloud SNRs thought to be interacting with (or within) neighboring superbubbles and supershells.

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