A helium flash is a very brief thermal runaway nuclear fusion of large quantities of helium into carbon through the triple-alpha process in the core of... 13 KB (1,613 words) - 05:07, 25 March 2024 |
Stellar nucleosynthesis (section Helium fusion) sufficient helium in its core to ignite it. In stars around the mass of the Sun, this begins at the tip of the red giant branch with a helium flash from a... 36 KB (4,152 words) - 11:49, 22 March 2024 |
Nova (redirect from Helium nova) brightest nova of this millennium, reaching magnitude 3.3. A helium nova (undergoing a helium flash) is a proposed category of nova events that lacks hydrogen... 24 KB (2,673 words) - 04:23, 25 March 2024 |
so-called helium flash. In more-massive stars, the collapsing core will reach 108 K before it is dense enough to be degenerate, so helium fusion will... 26 KB (3,361 words) - 21:59, 21 March 2024 |
Triple-alpha process (redirect from Helium fusion) burn helium at its core for about a billion years after the helium flash). For higher mass stars, carbon collects in the core, displacing the helium to... 20 KB (2,595 words) - 09:32, 10 March 2024 |
rocks Helium fusion, a type of nuclear fusion in stars Helium flash, the sudden beginning of helium fusion in certain kinds of stars Isotopes of helium Helium-3... 2 KB (256 words) - 12:58, 23 July 2022 |
as their core hydrogen is depleted and they begin to burn helium in core in a helium flash; they develop a degenerate carbon-oxygen core later on the... 145 KB (16,225 words) - 00:24, 1 March 2024 |
helium core during a red giant phase, undergo a helium flash before fusing helium on the horizontal branch, evolve along the AGB while burning helium... 33 KB (4,208 words) - 21:51, 21 March 2024 |
sequence. After this, the star's degenerate helium core abruptly ignites in a helium flash fusing helium, and the star passes on to the horizontal branch... 12 KB (1,133 words) - 06:50, 25 March 2024 |
to do so until it accumulates a large enough degenerate helium core to ignite the helium flash. It has likely exhausted the hydrogen from its core and... 53 KB (5,300 words) - 18:15, 22 March 2024 |
allow for energy production through thermonuclear fusion of hydrogen into helium. This energy in turn counterbalances the mass of the star pressing inward;... 15 KB (1,845 words) - 05:26, 29 January 2024 |
Nucleosynthesis Deuterium burning Lithium burning Proton–proton chain CNO cycle Helium flash Triple-alpha process Alpha process C burning Ne burning O burning Si... 7 KB (415 words) - 21:15, 17 April 2023 |
only happen early in the development of the Universe before hydrogen and helium were contaminated by heavier elements; thus, they may have been very massive... 9 KB (972 words) - 17:52, 18 March 2024 |
the star expands so that the helium fusion ceases, and the hydrogen shell burning restarts. During these shell helium flashes, the mass loss from the star... 23 KB (2,162 words) - 17:26, 9 March 2024 |
W Deupree, Robert G.; Wallace, Richard K. (June 1, 1987). "The Core Helium Flash and Surface Abundance Anomalies". The Astrophysical Journal. 317: 724... 52 KB (2,634 words) - 21:17, 26 March 2024 |
as iron, simply sink beneath the surface, leaving only light nuclei like helium and hydrogen. If the surface temperature exceeds 106 kelvins (as in the... 101 KB (11,766 words) - 19:59, 21 March 2024 |
associated with GRB 980425. Its spectrum showed no hydrogen and no clear helium features, but strong silicon lines identified it as a type Ic supernova... 20 KB (2,185 words) - 12:48, 15 March 2024 |