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Table 3

Required dust overdensities in the added optically thick regions inside a ring between 50 and 60 AU from the central star.



γ = 1 γ = 0.5 γ = 0
rc = 20 AU rc = 200 AU rc = 20 AU rc = 200 AU rc = 20 AU rc = 200 AU

Mdust,unperturb = 10-5   M 2700 2300 5700 2700 62 000 3400
Mdust,unperturb = 10-4   M 270 230 570 270 6200 340
Mdust,unperturb = 10-3   M 27 23 57 27 620 34

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