The Size, Structure, and Variability of Late-Type Stars Measured ...
The Size, Structure, and Variability of Late-Type Stars Measured ...
The Size, Structure, and Variability of Late-Type Stars Measured ...
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89<br />
R gas = 1.0R ∗<br />
Spectral Line Depth<br />
R gas = 1.2R ∗<br />
R gas = 2.0R ∗<br />
Figure 5.2: Fractional Absorption or Emission for a Thin Shell <strong>of</strong> Gas <strong>of</strong> Radius, R gas , as<br />
a Function <strong>of</strong> its Optical Depth, τ gas , <strong>and</strong> the Intensity Ratio, B ν (T gas )/B ν (T ∗ ), for Three<br />
Values <strong>of</strong> R gas .<br />
τ gas