G203.2 - 12.3 - A new optical supernova remnant in Orion

Details G203.2 - 12.3 - A new optical supernova remnant in Orion G203.2 - 12.3 - A new optical supernova remnant in Orion

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...389l..25w&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 389, April 10, 1992, p. L25-L28.

Astronomy and Astrophysics

Astronomy

2

Charge Coupled Devices, H Alpha Line, Light Emission, Supernova Remnants, Milky Way Galaxy, Orion Constellation, Sky Surveys (Astronomy)

Scientific paper

The discovery is reported of what appears to be an SNR at unusually high latitude near the Galactic anticenter. CCD images in the light of both forbidden S II and H-alpha show patchy filaments scattered over a 3-arcmin region, but with relative strengths in the two lines which vary by a factor of 20 from one filament to another. Spectra confirm the line identification and variable intensities. The most extreme filaments have line flux ratios forbidden S II/H-alpha of roughly 5, among the highest observed in SNR. The position of G203.2 - 12.3 coincides with that of a 'guest star' recorded by Chinese astronomers in A.D. 483.

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