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Table A.1.

Flux density, size, temperature, and spectral index results.

Frequency Obs. date Fν θmaj Axis ratio PA Tb Spectral
(GHz) (mJy) (mas) q(=θmin/θmaj) (°) (K) index
Mira A 2.07 ± 0.16 (a)
129.33 2017-09-21 34.22 ± 0.10 44.59 ± 0.60 0.98 ± 0.11 −40 ± 122 1845 ± 209 1.86 ± 0.14
131.28 35.13 ± 0.08 45.57 ± 0.47 0.95 ± 0.08 −42 ± 47 1826 ± 157
141.42 φ = 0.65 40.24 ± 0.08 44.71 ± 0.37 0.97 ± 0.06 −52 ± 80 1822 ± 111
143.31 41.13 ± 0.13 44.62 ± 0.65 0.97 ± 0.11 −13 ± 72 1835 ± 221
213.00 (b) 2017-09-22 83.73 ± 0.52 44.32 ± 0.26 0.90 ± 0.05 −15 ± 11 1842 ± 97 (c)
215.00 (b) φ = 0.65 87.69 ± 0.50 42.65 ± 0.26 0.99 ± 0.04 4 ± 18 1853 ± 73
227.21 (b) 98.66 ± 0.46 43.38 ± 0.20 0.95 ± 0.04 −25 ± 17 1880 ± 76
229.13 (b) 99.61 ± 0.54 43.26 ± 0.22 0.95 ± 0.04 −26 ± 21 1872 ± 87
330.12 (b) 2017-11-09 232.89 ± 0.41 42.36 ± 0.08 0.98 ± 0.01 −18 ± 15 2141 ± 33 1.75 ± 0.14
332.00 (b) φ = 0.81 234.21 ± 0.32 42.55 ± 0.07 0.98 ± 0.01 −18 ± 15 2102 ± 29
342.25 (b) 248.50 ± 0.28 42.46 ± 0.06 0.98 ± 0.01 −16 ± 12 2110 ± 27
344.12 (b) 249.18 ± 0.31 42.39 ± 0.06 0.99 ± 0.01 −20 ± 15 2093 ± 27
R Dor 2.06 ± 0.16 (a)
129.35 2017-09-26 79.16 ± 0.11 65.29 ± 0.48 0.98 ± 0.04 4 ± 43 1999 ± 76 1.99 ± 0.29
131.29 φ = 0.46 81.37 ± 0.09 64.89 ± 0.41 0.99 ± 0.02 17 ± 68 1999 ± 53
141.43 93.15 ± 0.09 64.78 ± 0.39 0.98 ± 0.02 2 ± 28 1995 ± 50
143.32 95.39 ± 0.10 64.54 ± 0.39 0.98 ± 0.02 10 ± 38 1998 ± 49
213.03 2017-09-25 211.38 ± 0.12 62.38 ± 0.16 0.99 ± 0.01 −1 ± 28 2131 ± 33 (c)
215.03 φ = 0.46 215.59 ± 0.13 62.53 ± 0.17 0.98 ± 0.01 −0 ± 20 2134 ± 34
227.24 241.21 ± 0.12 62.16 ± 0.15 0.99 ± 0.01 1 ± 20 2156 ± 30
229.16 245.36 ± 0.12 62.09 ± 0.15 0.99 ± 0.01 10 ± 24 2158 ± 29
330.15 2017-11-09 531.57 ± 0.13 62.29 ± 0.07 0.94 ± 0.01 44 ± 2 2355 ± 25 2.05 ± 0.05
332.03 φ = 0.57 539.89 ± 0.13 62.22 ± 0.07 0.94 ± 0.01 43 ± 2 2370 ± 25
342.30 573.25 ± 0.13 62.16 ± 0.07 0.94 ± 0.01 43 ± 1 2375 ± 25
344.17 579.94 ± 0.13 62.06 ± 0.07 0.94 ± 0.01 44 ± 2 2376 ± 25
W Hya 1.87 ± 0.15 (a)
129.33 2017-10-28 67.74 ± 0.09 53.45 ± 0.32 1.00 ± 0.03 − 2483 ± 73 1.83 ± 0.01
131.29 φ = 0.02 69.60 ± 0.06 53.07 ± 0.30 1.00 ± 0.02 − 2488 ± 58
141.42 79.71 ± 0.06 52.81 ± 0.28 1.00 ± 0.02 − 2511 ± 51
143.32 81.72 ± 0.07 52.64 ± 0.29 1.00 ± 0.02 − 2524 ± 55
330.95 2017-11-25 391.37 ± 0.13 49.38 ± 0.06 0.97 ± 0.01 90 ± 5 2668 ± 32 1.87 ± 0.01
332.84 φ = 0.10 392.98 ± 0.15 49.19 ± 0.07 0.96 ± 0.01 90 ± 4 2694 ± 34
342.96 421.25 ± 0.12 49.59 ± 0.06 0.95 ± 0.01 90 ± 3 2691 ± 31
344.96 421.32 ± 0.18 49.93 ± 0.07 0.94 ± 0.01 −68 ± 4 2667 ± 33
R Leo 1.92 ± 0.28 (a)
129.35 2017-09-30 38.96 ± 0.09 43.20 ± 0.33 1.00 ± 0.05 − 2204 ± 111 1.68 ± 0.03
131.29 φ = 0.41 39.73 ± 0.07 45.18 ± 0.31 0.91 ± 0.04 −16 ± 9 2186 ± 101
141.42 45.13 ± 0.07 43.68 ± 0.28 0.96 ± 0.04 78 ± 58 2172 ± 88
143.32 46.16 ± 0.08 42.23 ± 0.27 1.00 ± 0.03 − 2220 ± 72
215.19 (b) 2017-10-03 90.97 ± 0.17 43.75 ± 0.11 0.93 ± 0.01 −8 ± 4 1940 ± 34 2.13 ± 0.20
217.99 φ = 0.42 95.92 ± 0.07 41.80 ± 0.10 1.00 ± 0.01 − 2038 ± 27
230.23 106.24 ± 0.07 42.05 ± 0.10 0.99 ± 0.01 −87 ± 4 2020 ± 31
232.53 107.83 ± 0.07 41.88 ± 0.10 0.98 ± 0.01 −87 ± 14 2048 ± 29
139.18 (b) 2017-10-05 40.97 ± 0.04 43.76 ± 0.24 0.99 ± 0.02 20 ± 6 1967 ± 41 1.40 ± 0.04
141.07 (b) φ = 0.43 41.65 ± 0.03 45.76 ± 0.24 0.92 ± 0.01 −10 ± 4 1912 ± 37
151.23 (b) 45.80 ± 0.08 45.07 ± 0.24 0.92 ± 0.01 −9 ± 3 1883 ± 35
153.16 (b) 46.88 ± 0.11 45.03 ± 0.25 0.92 ± 0.02 −9 ± 4 1880 ± 40
145.88 2017-10-09 43.03 ± 0.03 46.01 ± 0.24 0.93 ± 0.01 −3 ± 4 1819 ± 34 1.80 ± 0.03
147.80 φ = 0.44 43.98 ± 0.03 45.90 ± 0.24 0.93 ± 0.01 −3 ± 4 1813 ± 31
157.98 49.53 ± 0.03 44.47 ± 0.23 0.98 ± 0.01 −27 ± 6 1803 ± 28
159.86 50.80 ± 0.04 45.64 ± 0.24 0.93 ± 0.01 −0 ± 4 1798 ± 31
213.04 2017-10-11 96.56 ± 0.16 45.40 ± 0.16 0.92 ± 0.02 6 ± 7 1977 ± 54 1.83 ± 0.09
215.04 φ = 0.45 98.68 ± 0.18 44.96 ± 0.18 0.93 ± 0.03 7 ± 9 2009 ± 61
227.25 109.45 ± 0.16 45.02 ± 0.15 0.92 ± 0.02 4 ± 7 1995 ± 49
229.16 110.00 ± 0.17 44.92 ± 0.15 0.92 ± 0.02 6 ± 7 1989 ± 50
129.34 2017-10-13 36.59 ± 0.09 47.03 ± 0.42 0.92 ± 0.05 5 ± 19 1886 ± 114 1.79 ± 0.02
131.30 φ = 0.46 37.59 ± 0.07 46.12 ± 0.37 0.94 ± 0.05 0 ± 19 1918 ± 99
141.43 42.88 ± 0.08 45.03 ± 0.32 0.98 ± 0.03 −17 ± 21 1900 ± 64
143.33 44.04 ± 0.08 46.55 ± 0.34 0.92 ± 0.04 0 ± 13 1886 ± 85

Notes.

(a)

Spectral index fit combining all epochs/bands.

(b)

Fit restricted to baseline lengths > 2 Mλ (Band 4) and > 3 Mλ (Bands 6 and 7).

(c)

Combined spectral index fit with previous epoch.

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