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Mothra consists of two supergiant stars, a yellow supergiant and a blue supergiant.Mothra A is a yellow supergiant or yellow hypergiant.It has a size of 271 solar radii, based on a luminosity of 50,000 solar luminosities and a temperature of 5,250 kelvin.
Front cover Albireo, a well-known coloured double star.Compare the colour of other stars in . On the coloured light of the binary stars and some other stars of the heavens or in the original German Über das farbige Licht der Doppelsterne und einiger anderer Gestirne des Himmels is a treatise by Christian Doppler (1842) [1] in which he postulated his principle that the observed frequency ...
Its brightest star, Alpha Andromedae, is a binary star that has also been counted as a part of Pegasus, while Gamma Andromedae is a colorful binary and a popular target for amateur astronomers. Only marginally dimmer than Alpha, Beta Andromedae is a red giant , its color visible to the naked eye.
Theta Leonis, Latinized from θ Leonis, formally named Chertan, [10] is a star in the constellation of Leo.With an apparent visual magnitude of +3.324 [2] it is visible to the naked eye and forms one of the brighter stars in the constellation.
In stellar evolution, an isochrone is a curve on the Hertzsprung-Russell diagram, representing a population of stars of the same age but with different mass. [1] The Hertzsprung-Russell diagram plots a star's luminosity against its temperature, or equivalently, its color. Stars change their positions on the HR diagram throughout their life.
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Eta Herculis is a G-type star. With a stellar classification G7.5IIIb, it is considerably larger than the Sun , having a mass that is 2.3 times solar and a radius 9.8 times . [ 6 ] Though it only shines with an apparent magnitude of 3.48, it is part of the "Keystone" asterism , visible overhead in the mid-summer night sky to northern observers ...