helium burning
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Helium flash — A helium flash is the runaway fusion of helium in the core of low mass stars of less than about 2.25 solar masses and greater than about 0.5 solar mass, or on the surface of an accreting white dwarf star. They may also occur in the outer layers… … Wikipedia
helium flash — noun The sudden beginning of the burning of helium in the core of stars of intermediate mass or on the surface of an accreting white dwarf … Wiktionary
Carbon burning process — The carbon burning process is a set of nuclear fusion reactions that take place in massive stars (at least 4 MSun at birth) that have used up the lighter elements in their cores. It requires high temperatures (6 times;108 K) and densities (about… … Wikipedia
Deuterium burning — is a nuclear fusion reaction that occurs in stars and some substellar objects, in which a deuterium nucleus and a proton combine to form a helium 3 nucleus. It occurs as the second stage of the proton–proton chain reaction, in which a deuterium… … Wikipedia
Oxygen-burning process — The oxygen burning process is a set of nuclear fusion reactions that take place in massive stars that have used up the lighter elements in their cores. It occurs at temperatures around 1.5×109 K / 130 keV and densities of 1010 kg/m3. The… … Wikipedia
Silicon burning process — In astrophysics, silicon burning is a two week [http://arxiv.org/pdf/astro ph/0601261 The physics of core collapse supernovae, Woosley and Janka] ] sequence of nuclear fusion reactions that occur in massive stars with a minimum of about 8–11… … Wikipedia
Neon-burning process — The neon burning process is a set of nuclear fusion reactions that take place in massive stars (at least 8 Solar masses). Neon burning requires high temperatures and densities (around 1.2×109 K or 100 KeV and 4×109 kg/m3). At such high… … Wikipedia
Oxygen burning process — The oxygen burning process is a set of nuclear fusion reactions that take place in massive stars that have used up the lighter elements in their cores. It occurs at 1.5 times;109 K and densities of 1010 kg/m3.The principal reactions are: :With… … Wikipedia
Lithium burning — Lithium is generally present in brown dwarfs and not in low mass stars. Stars, which achieve the high temperature (2,500,000 K) necessary for fusing hydrogen, rapidly deplete their lithium. This occurs by a collision of Lithium 7 and a proton… … Wikipedia
Hydrogen burning process — In the context of stellar nucleosynthesis, a hydrogen burning process can refer to either the proton proton chain reactions dominant in main sequence stars lighter than at most 5 solar masses, or to the CNO cycle dominant in heavier stars. Both… … Wikipedia
