Long-slit optical spectroscopy of Large Magellanic Cloud radio supernova remnants
Article
Article Title | Long-slit optical spectroscopy of Large Magellanic Cloud radio supernova remnants |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Payne, J. L., White G. L. and Filipovic, M. D. |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 383 (3), pp. 1175-1194 |
Number of Pages | 20 |
Year | 2008 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1111/j.1365-2966.2007.12620.x |
Web Address (URL) | https://academic.oup.com/mnras/article/383/3/1175/1037760 |
Abstract | We use long-slit spectra from shocked regions of radio supernova remnants (SNRs) in the Large Magellanic Cloud to estimate electron density and derive an average 'metal' abundance of 10-3.9 based on diagnostic line ratio plots. These simple diagnostics may be especially useful to determine abundances in more distant galaxies. Abundance values listed in this paper, in units of log(x/H) + 12, for nitrogen (7.3) and oxygen (8.2) agree with those reported in the literature. These estimates - which we assume to be dominated by the interstellar medium with little evolutionary interference - were obtained from spectral analysis of ∼50 per cent of known radio SNRs using the double beam spectrograph on the 2.3-m Advanced Technology Telescope at Siding Spring Observatory in Australia and the Cassegrain spectrograph on the 1.9-m Radcliffe telescope at the South African Astronomical Observatory. We also found optical evidence of shocked regions near 2 of 20 radio SNR candidates (J053620-693136 and J053731-662740), strengthening their identification as true remnants. © 2007 RAS. |
Keywords | Magellanic Clouds; Supernova remnants |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | James Cook University |
University of Western Sydney |
https://research.usq.edu.au/item/yy6vv/long-slit-optical-spectroscopy-of-large-magellanic-cloud-radio-supernova-remnants
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