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Table 4.

Sgr A: fitted size dependence on frequency, different models.

Model Incl. 230 GHz? a b c d χ2/d.o.f.
Size-freq + scattering Yes 1.338 ± 0.012 0.502 ± 0.075 1.201 ± 0.138 1146.29/34
Size-freq + scattering + offset Yes 1.277 ± 0.110 0.600 ± 0.205 1.757 ± 0.320 0.055 ± 0.021 1107.79/33
Scattering + offset Yes 1.360 ± 0.009 0.139 ± 0.005 1873.88/35
Size-freq + offset c + d Yes 1.385 ± 0.019 1.980 ± 0.010 0.044 ± 0.005 1108.29/34
Size-freq only c Yes 1.537 ± 0.015 1.905 ± 0.008 3292.23/35
Scattering only 2 Yes 1.417 ± 0.024 15944.28/36
No 1.338 ± 0.012 0.502 ± 0.078 1.201 ± 0.143 1145.25/32
No 1.273 ± 0.128 0.606 ± 0.235 1.773 ± 0.337 0.057 ± 0.021 1102.07/31
No 1.360 ± 0.009 0.139 ± 0.005 1824.55/33
c + d No 1.385 ± 0.020 1.980 ± 0.010 0.044 ± 0.005 1104.63/32
c No 1.537 ± 0.015 1.905 ± 0.008 3290.05/33
2 No 1.417 ± 0.025 15940.55/34

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