Why Does Stellar Main- Sequence Lifetime Decrease with Increasing Stellar

question 141

Multiple Choice

Why does stellar main- sequence lifetime decrease with increasing stellar mass?

• A)It doesn't; higher mass stars have more hydrogen available for fusion, and thus have longer lifetimes.
• B)Higher outward pressure prevents the core hydrogen from being replenished by the star's outer layers.
• C)Higher core temperatures cause fusion to proceed much more rapidly.
• D)Strong stellar winds cause higher mass stars to lose mass quickly.

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