What are iron stars? - Astronomy Stack Exchange
2015年9月2日 · "Iron stars" are a hypothetical kind of stellar remnant - similar to a neutron star or white dwarf - that are hypothesized to form in the far future of a Universe undergoing heat …
Does any iron fuse in stars before they go supernova?
2015年9月22日 · It is a secondary process because it needs iron nuclei to be present already - that is, the iron that is used for the seed nuclei is not produced inside the star, it was already …
How much iron does a star fuse before going supernova?
When the star starts to fuse iron, the amount of energy released is less than the amount of energy it to takes to fuse the atoms. This creates an energy deficiency and the core is unable to …
star - Why aren't there galaxy-sized balls of iron out there ...
2016年10月1日 · This means that iron spheres considerably heavier than the solar mass cannot form because the iron nuclei of heavier objects will be crushed to mostly neutrons or some …
explosion - Why is iron responsible for causing a supernova ...
2014年4月22日 · Iron-56 provides no way to produce heat by nuclear reactions. Hence core collapse is unavoidable. If the star isn't large enough, nuclear fusion may stop, before the core …
nucleosynthesis - Why do stars usually stop fusion at iron, even …
Contrary to common myth, the addition of alpha particles to iron-peak nuclei is exothermic. However, in the nickel/iron core of a massive star, there are no free alpha particles, they must …
star - Why does iron consume more energy in the fusion process …
As for why iron-peak elements are at the peak of the BE per nucleon curve, you need to look at the basic nuclear physics. The strong nuclear force is highly attractive but only operates …
supernova - Why does fusing iron in a stellar core use more …
The reactions up to and including the production of nickel-56 are exothermic (i.e., they release heat). The production of zinc-60 is endothermic (it consumes heat, in the form of a gamma …
How to calculate the number of neutrinos during neutron star …
2024年11月1日 · Formation of the iron peak elements Fe,Co and Ni by nuclear fusion marks the end of energy production in a star. If the mass of the iron core is greater than the …
Does a star fuse helium to beryllium on the main sequence?
2018年11月5日 · When a star has finished fusing all its hydrogen into helium, it will then start fusing helium into beryllium and so on and so forth up until iron. When the star is fusing to …