How is the categorization of K-type stars described when compared to the most common, smallest stars in the galaxy?
Answer
They are considered mid-to-high-mass when compared to the most common, smallest stars in the galaxy.
The designation of 'low-mass' is relative in astronomy. While K-type stars are indeed less massive than solar-type G-stars, the text clarifies their position relative to the absolute minimum mass stars, the M-dwarfs. Since M-dwarfs constitute the vast majority of stars and occupy the bottom of the mass scale (below $0.5 M_ ext{sun}$), the K-type stars, which generally range from $0.5 M_ ext{sun}$ to $0.8 M_ ext{sun}$, occupy a higher position within that lowest mass bracket. Thus, relative to the smallest population, they are situated in the mid-to-high mass section of that group.
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