Where do more massive main-sequence stars map on the Hertzsprung-Russell (H-R) diagram?
Answer
Upper-left
The location of a main-sequence star on the Hertzsprung-Russell (H-R) diagram is a direct reflection of its initial mass. Stars that possess significantly greater mass generate higher core temperatures and fusion rates, resulting in a much higher surface temperature and far greater energy output (luminosity). Consequently, these massive stars occupy the upper-left quadrant of the main sequence branch on the diagram, contrasting sharply with the lower-right region where the coolest and dimmest, least massive stars reside.
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