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Dwarf Stars
Dwarf stars are low light stars. They are classes by color, which helps to determine which stage they have entered.
68 Questions
What is the luminosity of a white dwarf star?
The luminosity of a white dwarf star can vary depending on its mass and age, but typically ranges from about 0.001 to 0.1 times the luminosity of the Sun. These stars are small and dense, with surface temperatures ranging from 8,000 to 100,000 Kelvin, which affects their brightness.
What causes stars to change during the white and black dwarf phases?
A white dwarf no longer produces energy through fusion but remains hot from the residual heat of the star it once was. It will radiate that energy away and slowly cool as a result, eventually becoming a black dwarf.
How many red dwarf stars are there?
Impossible to answer because they are dim stars so we can only see the close ones.
Why would white dwarf stars have less amount hydrogen?
A white dwarf is the remnant of a star that has fused all the hydrogen and helium in its core, leaving mostly carbon and oxygen nuclei.
Is a white dwarf capable of fusing elements?
Not normally. A white dwarf is the remnant of a star in which fusion has stopped. If, however, a white dwarf has a close binary companion star it can accrete gas from that companion. If enough gas collects on the white dwarf it can ignite a complex reaction change between the hydrogen gas and the carbon, nitrogen, and oxygen of the surface. Unlike the steady fusion in a main sequence star, the fusion on a white dwarf is a runaway reaction that results in a massive explosion called a nova, which drives away the accreted gas and ends fusion. If the white dwarf is massive enough the accretion of gas can trigger carbon fusion inside the white dwarf, resulting in an even larger explosion called a type Ia supernova, which destroys the white dwarf.
Want happens when Red dwarf stars die?
Red dwarf stars have such long lifetimes that none of them ever have yet. Presumably, they will eventually go through the white dwarf phase before cooling entirely and becoming "black dwarfs".
- A star on "main sequence" is a period in a stars evolution.
- A white dwarf is a stellar remain
- A supergiant star is the size of a very big star.
So they are completely different and not even related.
Why are there no white dwarfs among the 100 brightest stars?
White dwarfs have very small surface areas compared to main sequence stars and therefore cannot emit as much light.
What is the difference between red and brown dwarf stars?
Red dwarf stars are massive enough to undergo nuclear fusion, so they would burn a long time before they run out of fuel. Brown dwarves are not massive enough for nuclear fusion, so almost all of its light come from the time when the brown dwarf was formed. Over a long period of time, a brown dwarf would cool down into a gas giant similar to Jupiter.
Why are white dwarfs important?
Well, they don't affect us directly... But it's interesting to know that most stars - and pressumably that will include our Sun - will end up as a white dwarf, eventually. The exception is the most massive stars, which become neutron stars or black holes.
When a red dwarf dies does it make a nebula?
Yes, but it can also make a black hole or a white dwarf.
Why would a white dwarf become a red dwarf?
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.
Why are dwarf plants are hot but dim?
I assume you mean a DWARF STAR. There are different types of dwarf stars; the white dwarfs are fairly hot - but the reason they are dim is that they have a very small surface area.
How Big Are White Dwarf Stars exact number in kilometres?
The universe is a much more complicated place than you seem to believe.
The radius of a white dwarf star (I assume you mean a degenerate dwarf, not a main sequence star that happens to be white, which could also be called a "white dwarf") depends on its mass. An interesting property is that higher-mass stars have smallerradii.
While we can't provide "an exact number in kilometers" (or any other unit), we can say that the majority of white dwarfs have radii between 0.008 and 0.02 solar radii (5600 to 14000 kilometers).
What causes a giant star to turn into a white dwarf?
A giant star would experience a supernova explosion, in order to become a white dwarf.
What is the evolution sequence of a red dwarf star?
Your red dwarfs are stars (fusion in core). Objects of .4-8 solar masses will all become stars and then go through the red giant, planetary nebula and white dwarf stages (just like the Sun), but so will red dwarfs which have .08 - .4 solar masses (it just takes them "forever").
The reason a can, can implode on itself is because there is either too much heat or too much pressure either will result in a failure in the cans structural make up.
