The discovery of optical emission from the SNR G126.2 + 1.6

Details The discovery of optical emission from the SNR G126.2 + 1.6 The discovery of optical emission from the SNR G126.2 + 1.6

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...242..592b&link_type=abstract

Astrophysical Journal, Part 1, vol. 242, Dec. 1, 1980, p. 592-595. Research supported by the Alfred P. Sloan Foundation

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19

Light Emission, Supernova Remnants, Forbidden Transitions, Nitrogen Ions, Spectrum Analysis, Sulfur

Scientific paper

Interference filter photographs have been used to identify an arc of nebulosity that is coincident with the radio contours of the galactic supernova remnant G126.2 + 1.6. Spectrophotometry of the filament shows that the emission-line spectrum matches the spectra of other galactic supernova remnants. In particular, the arc shows the usual strong forbidden S II and forbidden N II emission lines seen in other remnants and unusually strong forbidden O III emission as seen in a few remnants. The spectrum can be adequately matched by a shock of velocity near 100 km/s in an interstellar cloud of density 3. If the SNR is at a distance of 4.5 kpc as indicated by the ratio Sigma-D relation, then the observed pressure in the filament requires an initial energy near 4 x 10 to the 51st (d/4.5 kpc)-cubed ergs.

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