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Table 3

Observations of R Scl, four background stars, the polarised shell, and the shell radius.

Day Set R Scl BG-S1 BG-S2 BG-E BG-N BG-AVG Shell Radius
IRScl σRScl Ibg−S1 σbg−S1 Ibg−S2 σbg−S2 Ibg−E σbg−E Ibg−N σbg−N Ibg σbg Ishell σshell [″]
Epoch 1 – June
16 set 2 41 622 9.0 1911.9 602.3 1338.4 611.9 1002.2 637.7 3777.3 643.6 2007 312 1.5 0.04 19.0
Ratio RRScl = 20.7 ± 3.2 Rshell = 0.75 ± 0.11
Epoch 2 – July
46 set 1 50 555 13.2 1593.8 43.6 1269.2 24.3 829.8 39.4 2892.3 97.2 1646 29 1.8 0.06 19.0
set 2 60 003 14.0 1960.5 27.4 1452.4 14.9 978.9 31.0 4008.3 92.1 2100 26 1.5 0.05 19.5
48 set 1 58 118 15.5 1375.9 63.6 1254.5 36.4 872.0 44.9 3664.4 190.5 1792 52 1.5 0.10 19.0
set 2 59 887 14.8 1705.9 45.2 1378.8 21.9 912.3 42.3 3918.7 145.6 1979 40 1.6 0.07 19.0
set 3 61 277 12.9 1724.5 39.5 1434.5 19.9 911.4 43.6 4365.8 172.3 2109 46 1.9 0.08 19.0
Ratio RRScl = 30.1 ± 0.3 Rshell = 0.88 ± 0.02
Epoch 3 – September I
96 set 1 95 159 23.7 2232.4 27.2 1540.5 11.8 903.9 54.4 5374.8 132.7 2513 37 4.4 0.10 19.1
set 2 95 814 27.7 2098.7 27.6 1444.7 12.1 893.8 37.8 4345.2 136.0 2196 36 4.4 0.10 19.1
97 set 1 99 705 23.5 2161.0 33.8 1567.8 18.0 965.5 41.6 4633.3 143.6 2332 39 4.4 0.09 19.2
set 2 98 577 22.2 2184.2 28.2 1369.9 13.7 946.6 45.4 3345.6 121.3 1962 33 4.5 0.11 19.2
98 set 1 98 347 34.6 2158.0 35.1 1546.2 17.6 944.4 37.3 4511.4 128.5 2290 35 4.5 0.10 19.2
set 2 98 382 32.0 2206.6 27.5 1385.2 12.3 1047.7 41.2 4011.0 115.4 2163 32 4.7 0.11 19.1
Ratio RRScl = 43.8 ± 0.3 Rshell = 2.01 ± 0.02
Epoch 4 – September II
107 set 1 103 100 31.7 1535.9 104.5 1344.4 48.0 911.2 82.5 3524.7 250.7 1829 72 4.4 0.12 19.1
set 2 102 010 31.7 1722.3 79.0 1448.7 38.3 813.2 80.0 3305.5 252.2 1822 70 4.6 0.13 19.0
set 3 100 470 28.3 1562.2 85.0 1448.9 29.5 1031.1 60.3 4349.7 287.5 2098 77 4.6 0.12 19.0
108 set 1 101 510 36.0 1901.2 79.0 1509.1 37.7 1053.3 71.9 3653.6 201.7 2029 58 4.7 0.13 19.0
set 2 103 140 41.3 1943.3 75.1 1565.3 33.8 891.8 67.7 4892.4 219.1 2323 61 4.9 0.12 19.1
set 3 102 920 47.9 1990.6 64.7 1491.1 29.9 908.8 70.4 3209.8 196.1 1900 55 5.0 0.13 19.1
set 4 98 752 54.2 1855.4 74.2 1518.3 28.4 1111.9 55.4 4435.4 246.7 2230 66 4.7 0.13 19.1
Ratio RRScl = 50.8 ± 0.7 Rshell = 2.33 ± 0.04
Epoch 5 – December
195 set 1 125 730 43.8 1680.1 65.8 1235.0 29.9 820.5 68.3 2892.6 160.1 1657 47 7.7 0.16 19.1
set 2 117 520 46.3 1483.4 85.7 1290.7 28.4 1028.3 52.3 3935.4 203.7 1934 57 7.5 0.16 19.2
196 set 1 119 830 29.9 1807.3 52.6 1241.1 18.9 911.9 50.1 3778.4 163.3 1935 45 7.6 0.15 19.2
set 2 113 920 28.5 1663.1 69.5 1282.3 22.3 805.3 50.4 4101.3 187.8 1963 52 7.4 0.15 19.2
197 set 1 122 550 42.3 2128.5 43.5 1258.3 18.1 745.0 57.2 2517.8 150.2 1662 42 8.2 0.16 19.2
set 2 116 960 40.9 1616.1 52.6 1328.2 20.6 738.9 49.5 4239.7 180.8 1981 49 7.6 0.15 19.2
Ratio RRScl = 64.9 ± 0.7 Rshell = 4.16 ± 0.06

Notes. The measurements are given in counts s−1. The days are relative to June 1, 2016 (JD 2457540.5).

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