Abstract
The opacity of water vapor has been calculated in the spectral region between 0.8 and 12.5 for temperatures of 16S0 , 2016 , 2520 , and 3360 K and for turbulent velocities of 2, 4, and 8 km/sec. The positions and the strengths of a total of approximately 2.3 X 108 spectral lines were calculated, and the water-vapor spectrum was reconstructed by summing the contributions of these lines. The harmonic mean of the opacity was calculated over intervals of 100 . For stars with solar abundances water vapor is an important source of opacity for T = 3360 K and is the dominant source of opacity for T < 2520 K. Th results of the calculations are presented in Table 4 in such a way that the harmonic mean opacity including the opacity due to water can be calculated in intervals of 100 for arbitrary values of the continuous opacity. 0
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