Essay
The sequence of stellar spectral types is shown in the figure below.Explain why the hottest star (O5) has so little emission in the visible portion of the spectrum (450-700 nm), spectral types F-K show the most emission in the visible band, and still cooler stars (M type) once again show very little in the visible band. 
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O stars are very hot blackbodies (40,000...View Answer
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