NASA/IPAC EXTRAGALACTIC DATABASE
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   NED object is NGC 6251; Reference is 1977MNRAS.181..465W

   Figure 1. (a) 151-MHz total intensity 1. Beam size 3.7 X 3.7 arcmin FWHM.
 The contour interval is 70 mJy per (beam area), ~ 2{sigma}. Zero and negative
 contours are omitted. Peak values are given in units of the contour interval. 

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