Where does a 1-solar-mass protostar appear on an H-R diagram?
A)to the right of the main sequence,and lower down than the Sun
B)to the right of the main sequence,and higher up than the Sun
C)to the left of the main sequence,and higher up than the Sun
D)Nowhere-only stars that have fusion in their cores can be shown on H-R diagrams.

Question

Quizplus · Accepted Answer

Protostars, including those with a mass similar to the Sun's, appear on the H-R diagram to the right of the main sequence because they are cooler but still very luminous due to their large radii, placing them higher up than the Sun on the diagram.

Where Does a 1-Solar-Mass Protostar Appear on an H-R Diagram