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A Study of Optical Observing Techniques for Extra-Galactic Supernova Remnants: Case of NGC300

Millar, W. C.; White, G. L.; Filipovic, M. D.

We present the results of a study of observational and identification techniques used for surveys and spectroscopy of candidate supernova remnants (SNRs) in the Sculptor Group galaxy NGC300. The goal of this study was to investigate the reliability of using [SII]/H_alpha > 0.4 in optical SNR surveys and spectra as an identifying feature of extr…