Red giant - Wikipedia, the free encyclopedia
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A red giant is a luminous giant star of low or intermediate mass (roughly 0.5–10 solar masses) that is in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the ...
en.wikipedia.org/wiki/Red_giant
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Star - Wikipedia, the free encyclopedia
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A star is a massive, luminous ball of plasma that is held together by gravity. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth. Other stars are visible in th...
en.wikipedia.org/wiki/Star
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Evolution of clusters ... The N-15 collects another proton, and then falls apart into the original carbon-12 and a helium nucleus. ... There are many kinds and classes of stars. Those that are actively fusing hydrogen into helium in the middle, that is, in their cores (either through the proton-proton chain or the carbon cycle),
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stars.astro.illinois.edu/sow/star_intro.html
stars.astro.illinois.edu/sow/star_intro.html
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The core helium fusing phase of a star's life is called the horizontal branch in metal-poor stars, so named because these stars lie on a nearly horizontal line in the H-R diagram of many star clusters. Metal-rich helium-fusing stars instead lie on the so-called red clump in the H-R diagram.
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www.optcorp.com/edu/articleDetailEDU.aspx?aid=1630
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Stage 5: Subgiant, Red Giant, ... If the star is massive enough, gravity can compress the core enough to create high enough temperatures (around 100 million K) to start fusing helium (or heavier elements if it is repeating this stage). ... In low mass stars (like the Sun), the onset of helium fusion can be very rapid,
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www.astronomynotes.com/evolutn/s5.htm
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Other stars will end their lives in different ways. Some will not go through a red giant stage. Instead, they will merely cool to become white dwarfs, then black dwarfs. ... A star develops from a giant, slowly rotating cloud that consists almost entirely of the chemical elements hydrogen and helium. The cloud also...
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www.nasa.gov/worldbook/star_worldbook.html
www.nasa.gov/worldbook/star_worldbook.html
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7. We know that giant stars are larger in diameter than the sun because a. ... 52. __________ is the thermonuclear fusion of hydrogen to form helium operating in the cores of massive stars on the main sequence. a. ... 77. Star cluster are important to our study of stars because a. all stars formed in star clusters. b.
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hoth.ncat.edu/~michael/moonstruck/astrotrivia/stars.htm...
hoth.ncat.edu/~michael/moonstruck/astrotrivia/stars.html
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B. giant stars ... C. the result of globular clusters ... 40. Ninety percent of all stars fuse helium to form carbon and lie on the main sequence.
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www2.potsdam.edu/islamma/Phys335test4_S01.htm
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A small fraction of stars (perhaps 5 percent) do not obey the ordinary relationship between color and size. These stars, called giants, are much, much larger than ordinary stars of the same temperature. Why? Because giant stars are not simply fusing hydrogen to helium in their cores; ... Globular clusters have many more stars,
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spiff.rit.edu/classes/phys240/lectures/hr/hr.html
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