Abstract
We present the results of 12CO J=1–0 line observations of eleven Galactic supernova remnants (SNRs) obtained using the Seoul Radio Astronomy Observatory (SRAO) 6-m radio telescope. The observation was made as a part of the SRAO CO survey of SNRs between l=70∘ and 190∘, which is intended to identify SNRs interacting with molecular clouds. The mapping areas for the individual SNRs are determined to cover their full extent in the radio continuum. We used half-beam grid spacing (60″) for 9 SNRs and full-beam grid spacing (120″) for the rest. We detected CO emission towards most of the remnants. In six SNRs, molecular clouds showed a good spatial relation with their radio morphology, although no direct evidence for the interaction was detected. Two SNRs are particularly interesting: G85.4+0.7, where there is a filamentary molecular cloud along the radio shell, and 3C434.1, where a large molecular cloud appears to block the western half of the remnant. We briefly summarize the results obtained for individual SNRs.
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Notes
In the Green’s 2009 catalog (Green 2009), the number has increased to 37.
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Acknowledgements
This work is supported in part by the Korean Research Foundation under grant KRF-2008-313-C00372. This research used the facilities of the Canadian Astronomy Data Centre operated by the National Research Council of Canada with the support of the Canadian Space Agency. The GB6 4850 MHz and WENSS 325 MHz radio images were retrieved from NASA’s SkyView and we acknowledge the use of NASA’s SkyView facility (http://skyview.gsfc.nasa.gov) located at NASA Goddard Space Flight Center.
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Jeong, IG., Byun, DY., Koo, BC. et al. SRAO CO observation of 11 supernova remnants in l=70∘ to 190∘ . Astrophys Space Sci 342, 389–399 (2012). https://doi.org/10.1007/s10509-012-1196-1
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DOI: https://doi.org/10.1007/s10509-012-1196-1