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Red giant - Wikipedia, the free encyclopedia
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Supergiant - Wikipedia, the free encyclopedia
Supergiants are among the most massive stars. In the Hertzsprung-Russell diagram they occupy the top region of the diagram. In the Yerkes spectral classification supergiants are class Ia (most lumi...
en.wikipedia.org/wiki/Supergiant |
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The diffraction-limited seeing capability of the instrument on the GTC is of interest for the study of the physical characteristics of nearby red supergiant stars, such as Betelgeuse and Mira Ceti. Betelgeuse is surrounded by a huge cloud of warm dust, ejected from the star during its supergiant phase.
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What are the main by-products of helium nuclear "burning" in red giant stars? ... The characteristics of red supergiant stars are; ... that stars with characteristics similar to those of our Sun appeared to be absent in this "nebula.";
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Star Type Color Approximate Surface Temperature Average Mass (The Sun = 1) Average Radius (The Sun = 1) Average Luminosity (The Sun = 1) Main Characteristics Examples ... Proxima Centauri is a red dwarf. Giant and Supergiant Stars - Old, Large Stars; RED GIANT; A red giant is a relatively old star whose diameter is about...
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Stars of spectral type R are stars with spectral characteristics similar to those of K stars except that molecular bands of C2, ... A supergiant with spectral type M. Red supergiants are the largest stars in the universe: if put in place of the Sun, some would touch Saturn. The two brightest red supergiants in Earth's sky...
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Among the other types of variable stars, we must mention the Mira type, red supergiant stars that reach fluctuations of 10 magnitudes; the semi-regular stars, red giants like Betelgeuse and Antares; and, finally, the irregular variable stars, with luminosity fluctuations that do not exceed 2 magnitudes.
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