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Table A.1

Photospheric parameters from fitting the continuum visibility data, with the uvfit task in the Miriad software, of Mira A and B in different continuum and spectral line windows of ALMA Band 6.

SPWs Freq. range Mira A uniform disk model Mira A Gaussian model Mira B Gaussian model
SνSν) θmaj × θmin, PA SνSν) θmaj × θmin, PA SνSν) θmaj × θmin, PA
(GHz) (mJy) (mas × mas, °) (mJy) (mas × mas, °) (mJy) (mas × mas, °)

2, 9 213.982214.100 84(36) 51.2 × 39.1, −48.3 45(37) 27.4 × 23.5, 38.2 9.4(1.8) 25.7 × 19.0, −81.4
1, 8 214.279214.397 76(37) 53.1 × 39.1, −55.1 56(37) 29.2 × 24.5, 17.6 9.4(1.9) 25.6 × 19.0, −60.1
3, 10 215.489215.607 97(40) 50.8 × 40.6, −50.0 35(41) 26.8 × 20.4, 31.9 9.2(1.7) 23.4 × 19.1, 82.3
4, 11 216.995217.113 90(35) 52.2 × 38.8, −41.8 43(36) 29.1 × 22.6, 48.0 9.8(1.9) 24.7 × 19.7, −89.6
0, 7 228.681230.417 102(9) 51.2 × 41.0, −45.0 47(9) 26.4 × 22.4, 34.0 11.3(0.5) 25.5 × 22.5, 72.7
6, 13 231.788231.906 91(40) 52.1 × 40.6, −57.1 61(41) 29.5 × 23.7, 17.9 11.3(2.2) 28.1 × 22.4, 12.3
5, 12 232.574232.692 95(36) 51.1 × 39.5, −60.4 59(36) 31.8 × 23.5, 21.3 11.1(2.1) 25.8 × 24.7, 43.1

Notes. The columns are (from left to right): ALMA Band 6 spectral windows (SPWs), rest frequency range of the continuum data (GHz), and the total flux (Sν, mJy) and the formal error of the fitting in the parenthesis (ΔSν, mJy), major and minor axes (θmaj, θmin, mas) and the position angle (PA, degrees) of each component adopted in the visibility fitting. Mira A was fitted with an elliptical uniform disk together with an elliptical Gaussian component, and Mira B with an elliptical Gaussian model. The formal errors for the major and minor axes are typically ≲ 1 mas for the models of Mira A, and ≲ 2 mas for Mira B, except for the continuum windows (spw= 0,7) in which the errors are ≲ 0.2 mas for Mira A and ~0.3 mas for Mira B. The choices of model components are the similar to those adopted by Matthews et al. (2015) and Vlemmings et al. (2015).

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