1. If a contracting protostar is five times the radius of the sun and has a temperature of only… 1 answer below »

1. If a contracting protostar is five times the radius of the sun and has a temperature of only 2000 K, how luminous will it be? (Hint: See the relation between luminosity, radius, and temperature for stars, Chapter 13.) 2. If a T Tauri star is the same temperature as the sun but is ten times more luminous, what is its radius? (Hint: See the relation between luminosity, radius and temperature for stars, Chapter 13.)  

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