Zachary J. Smeaton, M. D. Filipović, B. Koribalski, S. Lazarević, R. Alsaberi, Werner Becker, K. Dage, Yjan A. Gordon, Andrew M. Hopkins, R. Kothes, D. Leahy, Ana Mitras̆inović
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引用次数: 0
摘要
我们介绍了偶然发现的低表面亮度银河系超新星残余候选者 "独轮车"（Unicycle，G312.65+2.87）。Unicycle最初是在943.5 MHz的宇宙演化图大规模射电巡天中被发现的。我们测量到了一个弥漫壳（D = 288″ × 300″），综合通量密度为 S I 944 MHz = 150 ± 20 mJy。我们估计其最可能的固有直径为 30 < D < 36 pc 或 42 < D < 47 pc，对应的距离为 10 < d < 12 kpc 或 14 < d < 16 kpc，将其置于Scutum-Centaurus旋臂或人马座外旋臂内。
ASKAP-EMU Discovery of New Galactic SNR Candidate: Unicycle (G312.65+2.87)
We present the serendipitous discovery of a low surface brightness Galactic supernova remnant candidate, Unicycle (G312.65+2.87). Unicycle was initially discovered in the Evolutionary Map of the Universe large-scale radio survey at 943.5 MHz. We measure a diffuse shell (D = 288″ × 300″) and an integrated flux density of S I 944 MHz = 150 ± 20 mJy. We estimate the most likely intrinsic diameters of 30 < D < 36 pc or 42 < D < 47 pc, corresponding to distances of 10 < d < 12 kpc or 14 < d < 16 kpc, placing it within either the Scutum–Centaurus or outer Sagittarius spiral arms.
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