Red, very small and cold.
Spectral type M Stars
evolving into a later stage. For example, a G2 star going into a red giant (M type)
Betelgeuse has a spectral type of M2lab signifying that it is a red class M star. the "lab" refers to it being an intermediate luminous supergiant. It has a luminosity of 140,000L. Referring to the H-R diagram [See related link] we can see that an M class star with a luminosity of 140,000 will appear in the very top right corner - above la supergiants.
the sun is NOT a dwarf star, it is a g-type star. a dwarf is a s-type starThe Sun is a G2V star G2 means the second hottest of the yellow G class and V (the Roman numeral five) identifies the Sun as a main sequence DWARF STAR (so yes it is a dwarf star) A star with spectral S is a late-type giant star (similar to class K5-M).
The main types of star in order of temperature are A, F, G, K, M (A is the hottest). A G2 star is two tenths of the way from G to K, in other words slightly cooler than the standard G-type.
Barnard's star is a red dwarf, M-type main sequence star.
M star
Neither - Eltanin is a K type star
Enif is a class K2 orange giant star.
Teegarden's Star is an M-type red dwarf star located about 12 light years away in the constellation Aries.
Red stars (Red dwarfs and red giants) have a spectral class of M.
Red stars (Red dwarfs and red giants) have a spectral class of M.
Spectral type M Stars
It's a class K0-IIIa .
evolving into a later stage. For example, a G2 star going into a red giant (M type)
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Stars are classified according to temperature, with type O stars being the hottest, then B, A, F, G, K, M. The Sun is a type G star.