True , but Antares small companion looks very green to me every time I've managed to spot it , a contrast effect ?
Brian.
Quote:
Originally Posted by sheeny
Do you ever wonder why there are no green stars?
The colour of a star is determined by the peak in the continuum of the star's spectrum according to Wien's Law.
For our sun, the peak is in the green part of the spectrum. We have however evolved to perceive the particular blend of frequencies our sun puts out as white. So we perceive all stars with similar spectra as white, and we do not recognise green stars.
Therefore the correct colour of the sun is green, based on Wien's Law, however, stars of this temperature have historically been called yellow.
Al.
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