>>7836024 >Any star emitting mostly green will be putting out lots of red and blue as well, making the star look white. Changing the star's temperature will make it look orange, or yellow, or red, or blue, but you just can't get green. Our eyes simply won't see it that way. That's why there are no green stars.
Stars give off a broad spectrum. If the peak of that spectrum is "green," then it will look white, because green is right on the middleof the visible spectrum, so it will be giving off a lot of red and blue also.
I think I remember reading something that theorized that some very late stage stars, so late stage that none could possibly exist at the current time in the universe, since the universe is too young compared to how old the stars would have to be, would appear green. But it's a matter of perspective, since how a telescope like hubble sees light is usually color-independent.
There are metal rich stars. A star rich in Ba or Cu would have a pale green colour. Basically there would be a black body radiation spectrum on which there would be emission and absorption lines. So it would have to be a star from the blue - yellow segment of the H-R diagram.
The vast majority of the photons emitted from a star are due to incandescent matter producing a black body radiation curve. Stars emitting in the visible spectrum will produce a distribution of light including green but never exclusively green thus no green stars. You will always get lots of blue and red light in a star which peeks in green, enough that it will simply appear white.
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