The sun is a G type star, having spectral lime of H and K or ca II thus pronounced as G2, they ionized metals and neutral metals. The class g consists of a yellow evolutionary void, supergiants often occur between O or B (blue), K or M (red).
Different From yellow supergiant which is an extremely unstable place for a supergiant star to be. Electromagnetic radiation coming out from the star is needed to analyze this sequence in which the sun appears to have dark spots.
The spectral class of a star is a shortcode for summarizing his ionized state, to measure the photospheric temperature. Have surface temperatures of 6000 K and around 150% of Sol's luminosity.
