Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21348807p&link_type=abstract
American Astronomical Society, AAS Meeting #213, #488.07; Bulletin of the American Astronomical Society, Vol. 41, p.463
Astronomy and Astrophysics
Astronomy
Scientific paper
The study of Galactic supernova remnants (SNRs) often faces crucial observational obstacles, such as significant absorption along Galactic lines of sight and large uncertainties in distance estimates. These obstacles serve to limit the insights that can be gained into both SNRs on the whole and SNR-related processes, such as cosmic-ray acceleration. By studying SNRs located in carefully-selected nearby galaxies (such as those with face-on orientations and locations at high Galactic latitudes), these obstacles may be addressed. With this motivation, we have been analyzing properties of the SNR populations of the six major spiral galaxies (NGC 45, NGC 55, NGC 247, NGC 253, NGC 300, NGC 7793) of the Sculptor Group, the nearest group of galaxies (each member spiral galaxy lies at a distance of approximately 2-4 Mpc). To conduct this research, we have drawn upon both original and archival X-ray observations made of these galaxies with the Chandra X-ray Observatory and XMM-Newton as well as complementary radio observations made with the Very Large Array to both detect resident SNRs and examine their properties. Initial results and conclusions will be presented and discussed.
Graves Carl D.
Pannuti Thomas
Schlegel Eric M.
Staggs Wayne D.
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