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.
wierd shut up
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.
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.
Red dwarfs range from about 0.5 to 0.075 solar masses.
A typical red dwarf will be about half the size of the Sun and a temperature less than 4,000K
the mass of a red giant is 300 asses
A white dwarf could not become a red dwarf. A white dwarf is a remnant of a dead star. A red dwarf is a star with a very low mass.
A red dwarf.
It depends. The lower the mass of the star, the longer the lifespan. It is believed that the lifespan of these stars exceeds the expected 10 billion year lifespan of our Sun by the third or fourth power of the ratio of their masses to the solar mass, which means a red dwarf with 0.1 solar mass may continue burning for 10 trillion years
I don't think it's mass that defines those states. Whatever its mass, a star livesmost of its life on the main sequence like the Sun, swells to red gianthood in itsold age like Betelgeuse, and dies as a white dwarf like Sirius-B.They could certainly be arranged in the order of their density, however:least dense . . . red giantin the middle . . the Sunmost dense. . . white dwarf
Our Sun is a yellow dwarf, so it's mass will be comparable. See related questions for the mass of the Sun
A white dwarf could not become a red dwarf. A white dwarf is a remnant of a dead star. A red dwarf is a star with a very low mass.
A star does not turn into a red dwarf. A red dwarf is simply a star that has a low mass to begin with.
Not necessarily. A white dwarf is simply the remains of a low to medium mass star that has died. A red dwarf is a low mass star. Since red dwarfs last longer than medium mass stars, one could easily be older than a white dwarf.
Yes, far smaller. A red dwarf is a whole star in and of itself. A white dwarf is the collapsed remnant of the core of a low-to medium mass star. A white dwarf may be about the size of Earth.
A star with a low mass will go through these stages: 1. Protostar nebula 2. Main sequence (as a red dwarf) 3. Red giant 4. Planetary nebula 5. White dwarf (6. Black dwarf is theorized to occur after white dwarf)
Several times smaller than our Sun. Details vary, depending on the type of dwarf star (a red dwarf and a white dwarf are quite different things), and the exact mass.
Basically, none. Red dwarf stars have a lifetime that is much larger than the age of the Universe.Actually, if a lot of additional mass falls on a red dwarf star, it would start to burn more quickly. But then, of course, it would no longer be a red dwarf star.
A red dwarf.
No. A Red Dwarf is a very low mass star - less than our Sun. Only massive stars > 20 Suns will result in a supernova [See Related]
The mass of a red dwarf can go down to about 0.075 times the mass of the Sun. Anything smaller than that would be a brown dwarf, which is no longer considered a star.
Red dwarf, yellow dwarf, red dwarf
Red giant - then a white dwarf.