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Fig. 1
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Top panel: FAST total-intensity map of HB 9 of subband2 at a central frequency of 1385 MHz. The angular resolution is 4′. Bottom panel: FAST subband2 polarized-intensity map of HB 9 at 1385 MHz. Contours show the total intensities of HB 9 at 150, 400, 700, and 1100 mK and further increase in steps of 500 mK.
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