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Table 1

Sgr B2(N) continuum sources detected at 1.3 mm with ALMA (see Fig. 4 and Sect. 3.2) and fluxes at different frequencies.

ALMA211−275 VLAa ALMA220 ALMA235 ALMA250 ALMA265 SMAb
RA Dec. I ν F ν θ s F ν F ν F ν F ν F ν F ν
ID (h: m: s) (°: ′: ′′) (Jy beam-1) (Jy) (′′) (Jy) (Jy) (Jy) (Jy) (Jy) (Jy) Spectral indexc
AN01 17:47:19.87 −28:22:18.43 1.454 ± 0.101 25.74 ± 2.97 1.45 0.24 19.7 22.0 29.2 32.2 50.0 + 2.81 ± 0.19 2.54
AN02 17:47:19.86 −28:22:13.17 0.502 ± 0.071 1.836 ± 0.307 0.64 < 0.01 1.45 1.50 2.20 2.22 3.93 + 3.07 ± 0.36 > 2.83
AN03 17:47:19.90 −28:22:13.52 0.337 ± 0.055 1.404 ± 0.240 0.70 0.02 1.11 1.03 1.73 1.75 4.32 + 3.17 ± 0.48 2.57
AN04 17:47:19.80 −28:22:16.32 0.258 ± 0.031 1.236 ± 0.154 0.77 < 0.01 1.03 0.99 1.57 1.36 2.42 + 2.43 ± 0.41 > 2.64
AN05 17:47:19.77 −28:22:16.04 0.234 ± 0.020 1.019 ± 0.092 0.84 < 0.01 0.80 0.80 1.35 1.12 1.51 + 2.65 ± 0.44 > 2.54
AN06 17:47:19.96 −28:22:13.94 0.175 ± 0.024 1.017 ± 0.112 0.90 < 0.02 0.88 0.70 1.22 1.26 2.44 + 2.37 ± 0.62 > 2.23
AN07 17:47:19.91 −28:22:15.48 0.151 ± 0.009 0.305 ± 0.032 0.44 < 0.01 0.29 0.23 0.37 0.34 0.75 + 2.18 ± 0.71 > 1.93
AN08 17:47:19.25 −28:22:14.92 0.094 ± 0.016 0.308 ± 0.054 0.59 < 0.02 0.26 0.31 0.32 0.34 < 0.30 + 1.45 ± 0.55 –
AN09 17:47:19.64 −28:22:24.37 0.074 ± 0.007 0.416 ± 0.067 0.98 < 0.01 0.37 0.31 0.54 0.45 < 0.30 + 2.00 ± 1.12 –
AN10 17:47:19.78 −28:22:20.74 0.073 ± 0.010 0.213 ± 0.035 0.64 0.05 0.31 0.24 0.15 0.16 < 0.30 − 2.60 ± 0.55 < 0.85
AN11 17:47:19.68 −28:22:14.99 0.066 ± 0.007 0.235 ± 0.037 0.84 < 0.01 0.078 0.16 0.47 0.24 < 0.30 + 5.18 ± 1.48 –
AN12 17:47:19.22 −28:22:11.98 0.063 ± 0.007 0.413 ± 0.074 1.09 < 0.01 0.49 0.23 0.46 0.47 < 0.30 − 1.02 ± 0.88 –
AN13 17:47:19.54 −28:22:32.49 0.060 ± 0.007 1.039 ± 0.198 2.01 < 0.01 1.08 0.82 1.50 0.75 < 0.93 + 1.89 ± 1.27 –
AN14 17:47:18.97 −28:22:13.38 0.054 ± 0.007 0.493 ± 0.092 1.48 < 0.01 0.38 0.26 0.61 0.73 < 1.19 + 3.13 ± 0.94 –
AN15 17:47:19.50 −28:22:14.57 0.049 ± 0.006 0.147 ± 0.028 0.80 < 0.01 0.088 0.13 0.21 0.16 < 0.30 + 2.29 ± 0.84 –
AN16 17:47:20.01 −28:22:04.56 0.047 ± 0.007 0.468 ± 0.089 1.59 < 0.03 0.55 0.37 0.57 0.38 < 0.30 − 0.74 ± 1.07 –
AN17 17:47:19.99 −28:22:16.18 0.047 ± 0.008 0.076 ± 0.016 0.53 < 0.01 0.069 0.059 0.082 0.096 < 0.30 + 2.08 ± 0.75 –
AN18 17:47:20.09 −28:22:04.84 0.047 ± 0.006 0.359 ± 0.066 1.35 < 0.01 0.29 0.20 0.56 0.38 < 0.30 + 2.10 ± 1.25 –
AN19 17:47:19.16 −28:22:15.27 0.040 ± 0.006 0.118 ± 0.022 0.83 < 0.01 0.12 0.11 0.12 0.12 < 0.30 + 2.01 ± 0.82 –
AN20 17:47:19.88 −28:22:22.48 0.039 ± 0.007 0.043 ± 0.011 0.44 0.01 0.060 0.062 0.036 0.015 < 0.30 − 2.71 ± 1.04 < 2.39

Notes. Each source is numbered with an ID according to their intensity peak, from the brightest to the weakest. The intensity (Iν) and fluxes (Fν) for the different frequencies have been computed over the polygon defined by the 3σ contour level on the ALMA211−275 image, with σ being the rms noise of the map, 8 mJy beam-1. The deconvolved size (θS) is determined from the 50% contour level. See Sect. 3.2 for details.

(a)

VLA data at 40 GHz from Rolffs et al. (2011).

(b)

SMA data at 345 GHz from Qin et al. (2011).

(c)

The first spectral index is computed from all the continuum measurements in the ALMA frequency coverage (from 211 to 275 GHz) listed in Table B.1. The second value is derived from the continuum measurements at 40 GHz (VLA), 242 GHz (ALMA) and 345 GHz (SMA).

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