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If a 1 M_⨀protostar Starts Out on the Hayashi Track

Question 80

Multiple Choice

If a 1 M_⨀protostar starts out on the Hayashi track with a temperature of 3300 K and a luminosity of 320 L_⨀,what is its approximate radius?

A) 25 R_⨀
B) 55 R_⨀
C) 75 R_⨀
D) 105 R_⨀
E) 125 R_⨀

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