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Table 2

Required dust overdensities in the added optically thick regions inside a ring between 30 and 40 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 630 1300 530 2000 680 3300
Mdust,unperturb = 10-4   M 63 130 53 200 68 330
Mdust,unperturb = 10-3   M 6.3 13 5.3 20 6.8 33

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