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Hace 4 días · The class D (for Degenerate) is the modern classification used for white dwarfs—low-mass stars that are no longer undergoing nuclear fusion and have shrunk to planetary size, slowly cooling down. Class D is further divided into spectral types DA, DB, DC, DO, DQ, DX, and DZ.
Hace 1 día · Sirius is a binary star system consisting of two white stars orbiting each other with a separation of about 20 AU (roughly the distance between the Sun and Uranus) and a period of 50.1 years.
17 de jun. de 2024 · Several of the stellar class of white dwarf stars, which have low luminosities and high densities, also are among the brightest stars. Sirius B is a prime example, having a radius one-thousandth that of the Sun, which is comparable to the size of Earth.
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14 de jun. de 2024 · Learn about the definition, size, mass, life cycles, and facts of white dwarf stars, the faint and dense remnants of intermediate- and low-mass stars. Find out how they are supported by degeneracy pressure, have a limiting mass, and cool down over time.
17 de jun. de 2024 · Star - Temperature, Spectral Types, Luminosity: Stars differ in colour. Most of the stars in the constellation Orion visible to the naked eye are blue-white, most notably Rigel (Beta Orionis), but Betelgeuse (Alpha Orionis) is a deep red.
17 de jun. de 2024 · The crystal clear water and fantastic scuba and snorkeling opportunities at White Star Quarry make it the perfect destination for water lovers this summer. At White Star Quarry, visitors will find designated snorkeling, scuba, and swimming areas.
