Table 3: Positions of the five IRAM/MAMBO sources in the map of GJ 628 at $\lambda =1.2$ mm (Fig. 2) and their nearest optical objects referenced in the USNO-B1.0 catalogue.
  MAMBO USNO-B1.0

Name		 $\alpha^a$ $\delta^a$ Fluxb Star-source Object-source Object      
  (J2000) (J2000) density separation separation   magnitudes  
      (mJy) ('') (AU) ('')            
MAMBO-W 16 30 07.5 -12 39 42 3.6 154    660 3.0   (1.0$\sigma $) B = 20.03 R = 19.12
MAMBO-NW 16 30 15.6 -12 39 11 2.7 53    230 13.3   (4.0$\sigma $) B = 20.50 R = 17.90
MAMBO-SW 16 30 13.9 -12 39 59 2.0 90    390 10.1  (3.0$\sigma $) B = 19.27 R = 18.23
MAMBO-NE 16 30 19.7 -12 39 32 2.4 83    360 9.1   (2.5$\sigma $) B = 20.06 R = 18.30
MAMBO-E 16 30 22.3 -12 39 25 1.8 68    290 6.9   (2.0$\sigma $) B = 21.63 I = 18.61
a The coordinates uncertainties are 3.5'' for MAMBO.
b Flux densities are the peak values unaffected by Gaussian smoothing of the map.

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