Optical spectra of supernova remnant candidates in the Sculptor Group galaxy NGC 300

Millar, William C., White, Graeme L., Filipović, Miroslav D., Payne, Jeffrey L., Crawford, Evan J., Pannuti, Thomas G., and Staggs, Wayne D. (2011) Optical spectra of supernova remnant candidates in the Sculptor Group galaxy NGC 300. Astrophysics and Space Science, 332 (2). pp. 221-239.

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Abstract

We present moderate-resolution (<5 Å) long-slit optical spectra of 51 nebular objects in the nearby Sculptor Group galaxy NGC 300 obtained with the 2.3 meter Advanced Technology Telescope at Siding Spring Observatory, Australia. Adopting the criterion of [S II]Total:Hα ≥ 0.4 to confirm supernova remnants (SNRs) from optical spectra, we find that of 28 objects previously proposed as SNRs from optical observations, 22 meet this criterion with six showing [S II]Total:Hα of less than 0.4. Of 27 objects suggested as SNRs from radio data, four are associated with the 28 previously proposed SNRs. Of these four, three (included in the 22 above) meet the criterion. In all, 22 of the 51 nebular objects meet the [S II]Total:Hα criterion as SNRs while the nature of the remaining 29 objects remains undetermined by these observations.

Item ID: 21792
Item Type: Article (Refereed Research - C1)
Keywords: galaxies: individual: NGC 300, galaxies: ISM, supernova remnants
ISSN: 1572-946X
Date Deposited: 30 Apr 2012 05:37
FoR Codes: 02 PHYSICAL SCIENCES > 0201 Astronomical and Space Sciences > 020103 Cosmology and Extragalactic Astronomy @ 50%
02 PHYSICAL SCIENCES > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 100%
Citation Count from Web of Science Web of Science 2
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