Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apjs...51..345m&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 51, April 1983, p. 345-355.
Astronomy and Astrophysics
Astronomy
242
Astronomical Catalogs, Light (Visible Radiation), Magellanic Clouds, Radio Sources (Astronomy), Supernova Remnants, X Ray Sources, High Resolution, Proportional Counters, Spectral Resolution, Stellar Evolution
Scientific paper
The present updated catalog of SNRs in the Large and Small Magellanic Clouds (LMC and SMC) incorporates remnants recently discovered as a result of coordinated X-ray, optical, and radio surveys, and contains 25 confirmed SNRs in the LMC and six in the SMC. Optical images are included for all of the new SNRs, together with X-ray isophotes for 24 of the SNRs in the LMC which have been obtained with the high resolution imager and imaging proportional counter of the Einstein Observatory. The cumulative number-diameter relation for Type II SNRs with D smaller than 50 pc in the LMC is N(D)= 0.36 D exp 1.0 + or 0.2, suggesting that the SNRs have evolved much faster than expected from Sedov theory and that the free expansion phase dominates their evolution up to diameters of 30-40 pc. SNR production frequencies in the LMC and SMC are calculated to be 1/275 and 1/800 years, respectively, or nearly equal to the galaxies' luminosity ratios.
Dopita Mike A.
Ford V. L.
Helfand David J.
Long Knox S.
Mathewson D. S.
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