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Article Contents
1 Introduction
2 The mid-plane potential in power-law discs from an ordinary differential equation (ODE)
3 Formal solution of the ODE
4 Potential at the disc edges
5 Solution of the ODE in the form of series
6 Potential inside the disc
7 Approximate formulae inside the disc
8 Discs with no inner/outer edges
9 Concluding remarks
Appendix A: Vanishing coefficient A for s $\in $ {-3,0}
Appendix B: Converged values of coefficient A, A1, and A$_\Delta $ for s $\in $ [-4,1]
Appendix C: Convergence acceleration for A
Appendix D: A basic algorithm
References

List of tables
List of figures

Copyright ESO 2008
Published by EDP Sciences