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Table 3

Parameters that provide the best GRaTer models fitting the IRDIS BB_H KLIP science image with two HG phase functions.

NE side SW side Full disk
i (°) 88.0 88.2 ± 0.2 88.2 ± 0.2 (88.0)
R0 (au) 132.4 ± 8.3 128.5 ± 8.6 134.4 ± 8.5 (140)
αin 5.2 ± 2.8 6.0 ± 4.0 6.0 ± 4.0 (2)
αout −6.0 ± 1.0 −6.0 ± 1.0 −6.0 ± 1.0 (−6)
g1 0.68 ± 0.05 0.69 ± 0.06 0.69 ± 0.06 (0.7)
g2 −0.3 ± 0.2 −0.3 ± 0.2 −0.3 ± 0.2 (−0.4)
w1 0.82 ± 0.04 0.80 ± 0.06 0.81 ± 0.05 (0.80)
h 0.025 ± 0.005 0.022 ± 0.003 0.022 ± 0.002 (0.020)

Notes. The model parameters corresponding to least χ2 are provided in bracket in the fourth coloumn.The mean value of the distribution and the dispersion is used for i, αin, αout, g2 and h as they have either flat distribution or small parameter space.

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