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Flatland
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Is it possible for some brown dwarves to be more massive than some stars?
If the fusible nuclei are there.Chronos said:Fusion occurs in the core of a star.
No, it wouldn´t. The speed of iron falling into a star is enough to evaporate the iron, which would mix with hydrogen. Once hot iron vapour is mixed with hydrogen, there will be no efficient way to unmix them, unless they are cooled below the boiling point of iron, which is not the case inside even a brown dwarf.Chronos said:If you could somehow infuse a large amount of iron into a star, the denser iron would displace hydrogen from the core
Again no.Chronos said:- effectively serving as a stellar fusion extinguisher.
A brown dwarf is a type of substellar object that is too small to sustain nuclear fusion reactions in its core, making it different from a star. It has a mass between that of a large gas giant planet and a small star.
A brown dwarf can have a mass up to 75-80 times the mass of Jupiter, which is the upper limit for a substellar object. Beyond this mass, the object would be considered a low-mass star.
A brown dwarf forms when a large cloud of gas and dust collapses under its own gravity. However, unlike a star, the collapsing cloud does not reach high enough temperatures and pressures to ignite nuclear fusion and become a star.
Yes, a brown dwarf can emit light, but the majority of its radiation is in the infrared part of the electromagnetic spectrum. This is because it does not have enough mass to sustain nuclear fusion, which is the process that produces most of a star's light.
Brown dwarfs are often detected using infrared telescopes, as they emit most of their radiation in this part of the spectrum. They can also be detected through their gravitational influence on other objects, such as stars, in their vicinity.