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Table B.2

Small scale structure: dust density components in Sgr B2.

ID 1 Model 2 RA 3 Dec 4 dz5 r0 6 nc 7 η 8 Star 9
[h:m:s, J2000] [d:m:s, J2000] [105 au] [103 au] [107 H2 cm-3]

M-SMA-1a ABCD 17:47:20.197 28:23:04.36 1.0 20 3.0 5.0 B0
M-SMA-1b ABCD 17:47:20.170 28:23:04.60 1.0 35 3.1 5.0 B0.5
M-SMA-1c ABCD 17:47:20.158 28:23:05.08 1.0 10 3.6 5.0 B0.5
M-SMA-1d ABCD 17:47:20.148 28:23:05.48 1.0 20 3.6 5.0 B0.5
M-SMA-2a ABCD 17:47:20.152 28:23:04.18 0.0 19 3.2 5.0 B0.5
M-SMA-2b ABCD 17:47:20.124 28:23:04.45 0.0 14 3.3 5.0 B0.5
M-SMA-3 ABCD 17:47:20.100 28:23:04.04 0.0 14 2.8 5.0 B0.5
M-SMA-4 ABCD 17:47:20.152 28:23:03.30 0.0 7 3.4 5.0 none
M-SMA-5 ABCD 17:47:20.212 28:23:04.90 0.0 7 3.2 5.0 B0.5
M-SMA-6 ABCD 17:47:20.175 28:23:06.08 0.0 35 3.0 5.0 none
M-SMA-7 ABCD 17:47:20.118 28:23:06.35 0.0 30 2.9 5.0 B0.5
M-SMA-8 ABCD 17:47:20.215 28:23:06.43 0.0 4 3.6 5.0 none
M-SMA-9 ABCD 17:47:20.250 28:23:07.10 0.0 9 2.8 5.0 B0.5
M-SMA-10 ABCD 17:47:20.005 28:23:05.79 0.0 15 3.3 5.0 none
M-SMA-11 ABCD 17:47:20.108 28:23:03.10 1.0 20 3.2 5.0 B0.5
M-SMA-12 ABCD 17:47:20.136 28:23:02.24 1.0 50 3.8 5.0 B0
N-SMA-1a A 17:47:19.912 28:22:18.25 5.0 45 9.0 5.0 none
BCD 6.95 45 9.0 5.0 none
N-SMA-1b A 17:47:19.900 28:22:19.51 2.0 75 4.0 5.0 none
BCD 6.98 75 4.0 5.0 none
N-SMA-2a A 17:47:19.944 28:22:13.64 3.0 10 6.9 5.0 B0.5
BCD 6.97 10 6.9 5.0 B0.5
N-SMA-2b A 17:47:19.880 28:22:13.80 30 10 6.8 5.0 B0.5
BCD 6.97 10 6.8 5.0 B0.5

Notes.

(1)

ID is the identifier used in the model. These identifiers are identical to the ones introduced by Qin et al. (2011). Note: some of these objects identified by Qin et al. (2011) show an elongated intensity structure. We recover these objects with a superposition of several spherical symmetric clumps. We distinguish these components by adding additional lowercase letters to the identifier introduced by Qin et al. (2011).

(2)

Model refers to one of the four model described in this paper.

(3)

RA is the right ascension of the density component given in units of hours:minutes:seconds in the equatorial coordinate system.

(4)

Dec is the declination of the density component given in units of degrees:arcminutes:arcseconds in the equatorial coordinate system.

(5)

dz is the displacement along the line of sight with respect to the model center. The z-axis is oriented such that it points towards the observer.

(6)

r0 is the radius defining the component, as described in Eq. (4).

(7)

nc is the central density.

(8)

η is the exponent of the dust density profile.

(9)

This column indicates whether an additional heating source had to be included inside the dust component. If this is the case, the spectral type of the star is given.

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