why do the smallest luminous objects lie along a line on the HR diagram corresponding to radius of 1 Earth radius?(adsbygoogle = window.adsbygoogle || []).push({});

I'm kinda lost on this question its from past exam..

I think it has to do with degeneracy pressure but that does not sound right to me...

could someone help me out?

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# Why do the smallest luminous objects lie along a line corresponding to

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