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The massive RSGC1 cluster contains 14 red supergiants and one yellow supergiant. [8]Yellow supergiants have a relatively narrow range of temperatures corresponding to their spectral types, from about 4,000 K to 7,000 K. [9] Their luminosities range from about 1,000 L ☉ upwards, with the most luminous stars exceeding 100,000 L ☉.
Intrinsic variable types in the Hertzsprung–Russell diagram showing the Yellow Hypergiants above (i.e. more luminous than) the Cepheid instability strip. A yellow hypergiant (YHG) is a massive star with an extended atmosphere, a spectral class from A to K, and, starting with an initial mass of about 20–60 solar masses, has lost as much as half that mass.
While it is frequently described as a yellow supergiant, especially in evolutionary terms, [2] it is classified as a bright giant based on spectrum. [3] Sargas (θ Scorpii A) 329 ± 9 [5] F0Ib-F1III [6] or F0 II [7] 35.5 × 26.3 [5] 3.1 +0.37 −0.32 [5] 1.862 [8] Either a lower luminosity supergiant or a (bright) giant, formed after stellar ...
HD 271182, occasionally referred to as G266 and R92, is a rare yellow hypergiant (YHG) and an Alpha Cygni variable.It is one of the brightest stars in the Large Magellanic Cloud (LMC), [10] positioned in the deep southern constellation of Dorado.
Rigel, the brightest star in the constellation Orion is a typical blue-white supergiant; the three stars of Orion's Belt are all blue supergiants; Deneb is the brightest star in Cygnus, another blue supergiant; and Delta Cephei (itself the prototype) and Polaris are Cepheid variables and yellow supergiants. Antares and VV Cephei A are red ...
Rho Cassiopeiae (/ ˌ r oʊ k æ s i ə ˈ p iː aɪ,-s i oʊ-,-iː /; ρ Cas, ρ Cassiopeiae) is a yellow hypergiant star in the constellation Cassiopeia.It is about 8,150 light-years (2,500 pc) from Earth, yet can still be seen by the naked eye as it is over 300,000 times brighter than the Sun.
Under ideal conditions, onlookers can count as many as 100 shooting stars per hour, but hourly rates will not be quite as high this year as a nearly full moon will shine bright on the night of Aug ...
Notable examples of hypergiants include the Pistol Star, a blue hypergiant located close to the Galactic Center and one of the most luminous stars known; Rho Cassiopeiae, a yellow hypergiant that is one of the brightest to the naked eye; and Mu Cephei (Herschel's "Garnet Star"), one of the largest and brightest stars known.