Question

what are the factors that determine the colour of a star???????????????¿

Answer 1

surface temperature of star. 

by mass & age also. older stars get cooler
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Answer 2

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Your answer ....

The factors are →

☑️Surface Temperature →it is the most important factor . When an atom gets excited it jumps to higher energy level it requires energy which it gets from the temperature of the star . Once excited, it goes back to lower energy state thus emitting radiation.

☑️Human Vision →cones & rods , pupil size , purkinje effect determine this factor .

☑️Interstellar reddening and extinction

☑️Metallicity

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