Fig. 4

Effect of variation in the disc’s radial extent at i = 77°. Upper panel: the inner radius is fixed at 58 RWD and the outer radius varies: 84, 110, and 136 RWD. The C ii line disappears with decreasing outer radius. Lower panel: the outer radius is fixed at 110 RWD and the inner radius varies: 2, 30, and 58 RWD. Broad line wings develop when the inner radius becomes smaller.
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