Which luminosity class is assigned to Main-Sequence Stars?
Answer
Class V
Luminosity class V is specifically assigned to stars residing on the Main Sequence. Stars in this class are characterized by fusing hydrogen into helium in their cores, a stable process during which the majority of a star's existence is spent. Our own Sun, for instance, is designated as a G2V star, confirming its status as a typical main-sequence object currently undergoing core hydrogen fusion.
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