Starlight - Main Sequence - O - B - A - F - G - K - M - Luminosity Classes - Spectral Class Codes
B class main sequence stars are found, along with O class stars, in star forming regions of galaxies. They are relatively short lived. The heavier stars in the class have timelines like O class stars - they blast apart as supernovae at the end of their lives, leaving a neutron star remnant behind. The cores of the lighter stars in the class collapse to white dwarfs and puff out planetary nebulae in the process. More Information.
