There are stars with spectral classes of O & B (e.g. Rigel) R136a1 is a star of the spectral class WN5h. Wolf Rayet stars have this kind of spectral type.
stars in spectral classes O, B, or A would be a bright bluish color, leaning towards a purplish color as you go from A to O.
Massive stars. See related question: 2nd Answer: Yes, massive stars, but ones with another star like a red giant orbiting each other. The to-be supernova 'sucks' material from the other star near it until its mass is large enough to make the star collapse and burst.
T Tauri stars are pre-Main Sequence stars which are large but not as hot as O and B Main Sequence stars. They mainly fall in the categories of F, G, K or M, and they are not yet on the Main Sequence because they are still accreting mass and are still very young and unstable.
The most massive stars will form ultra large stars, which will collapse into black holes upon their demise.
Spectral types O, B and A.
The correct classification for the stars is O,B,A,F,G,M,K.
3 stars in orians belt
O, B, A, F, G, K, and M
The massive stars turn into gas
Some massive stars will become neutron stars. When massive stars die they will either become neutron stars or black holes depending on how much mass is left behind.
A The temperature of star B is lower B The temperature of star A is lower C Star A is more massive D Star B is more massive E Not enough information to conclude anything
stars in spectral classes O, B, or A would be a bright bluish color, leaning towards a purplish color as you go from A to O.
What I have learned about massive stars is...
O, B, A, F, G, K, and M.
Massive stars are most likely to explode faster than smaller stars.
Massive Stars Use Their Hydrogen Much Faster Than Stars Like The Sun Do.
See related question