What is the mass of a red dwarf?

Answer 1

Red dwarves have very low mass, less than 40% of that of our own sun. As a result, they have relatively low temperatures in their cores such that energy is generated at a very slow rate through hydrugen fusion into helium. Very little light is emitted, even the largest red dwarf emits less than 10% of that of our sun.

The biggest difference between a red dwarf and our own sun is the total absence of a metallic core.

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Mostly hydrogen, like any other star which is still burning.

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All stars are "mostly hydrogen, with some helium". Most stars have traces of heavier elements, and the exact proportion is different for every star and every stage of the star's life. When stars get large proportions of heavier elements, they are near the end of their lives.

Answer 2

Generally, the luminosity of red dwarfs are very low.

The largest red dwarf known (Lacaille 8760) has a luminosity 10% of our own Sun, whereas the coolest has a luminosity 1/10,000th that of our Sun.

Answer 3

The term "red dwarf" when used to refer to a star does not have a strict definition. When explicitly defined, it typically includes late K- and early to mid-M-class stars but in many cases it is restricted just to M-class stars.

If restricted to just M class stars, a typical range of sizes is between about 56,000 km and 431,000 km.

Answer 4

Red dwarfs range from about 0.5 to 0.075 solar masses.

Answer 5

A typical red dwarf will be about half the size of the Sun and a temperature less than 4,000K

Answer 6

the mass of a red giant is 300 asses