Schematic view of a double ringed thick disk. Observed at inclination i, circular rings will appear elliptical. The height of the scattering surface of Ring 1 (Hτ = 1(R1)) can be found by determining the semi-minor axis (b), i and the distance between the star and the center of the ellipse (u). Note that this figure has the purpose of explaining how to determine Hτ = 1 for the different rings, not to portray ideas about the radial density distribution.
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