The brightest stars in a young open cluster will be/

Red giants that are dusing helium into carbon. Yellow giants like our Sun, but much larger. Red T-tauri stars still heading for the main sequence. Massive blue stars at the top left on the H-R diagram. The core stars of planetary nebulae.
Question asked by: u00sxc6

Asked on: 23 Oct 2009

The massive stars will burn up their fuel quickest due to the huge gravity making the fusion happen quickly, therefore these will shine the brightest in the galaxy.

Stars like our sun that are a smaller size use their fuel much more slowly and therefore live longer, therefore the radiation they give out is not as bright.
By: knowitall
Replied at: 25 Oct 2009
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