K-type star

astronomy

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June 30, 2026

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K-type stars, also known as K stars, are a classification of stars characterized by their orange color and surface temperatures ranging from approximately 3,500 to 5,000 Kelvin. They are cooler than our Sun, which is a G-type star. K-type stars are common in the Milky Way Galaxy and are known for having relatively long lifespans. They are often studied for the potential presence of planets, as their spectral lines allow for precise measurements of stellar radial velocity, aiding in the detection of orbiting exoplanets. Aldebaran is an example of a K-type star.12345

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Classification of spectral types
In the somewhat hotter K-type stars, the TiO features disappear, and the spectrum exhibits a wealth of metallic lines. A few especially stable fragments of molecules such as cyanogen (CN) and the hydroxyl radical (OH) persist in these stars and even in G-type stars such as the Sun. The…
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In the somewhat hotter K-type stars, the TiO features disappear, and the spectrum exhibits a wealth of metallic lines. A few especially stable fragments of molecules such as cyanogen (CN) and the hydroxyl radical (OH) persist in these stars and even in G-type stars such as the Sun. The…
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stellar classification
Class K stars are yellow to orange, at about 3,500–5,000 K, and M stars are red, at about 3,000 K, with titanium oxide prominent in their spectra. L brown dwarfs have temperatures between about 1,500 and 2,500 K and have spectral lines caused by alkali…
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Class K stars are yellow to orange, at about 3,500–5,000 K, and M stars are red, at about 3,000 K, with titanium oxide prominent in their spectra. L brown dwarfs have temperatures between about 1,500 and 2,500 K and have spectral lines caused by alkali…
Read More