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A G-type main-sequence star (spectral type: G-V), also often, and imprecisely, called a yellow dwarf, or G star, is a main-sequence star (luminosity class V) of spectral type G. Such a star has about 0.9 to 1.1 solar masses and an effective temperature between about 5,300 and 6,000 K (5,000 and 5,700 °C; 9,100 and 10,000 °F).
Yellow supergiants generally have spectral types of F and G, although sometimes late A or early K stars are included. [1] [2] [3] These spectral types are characterised by hydrogen lines that are very strong in class A, weakening through F and G until they are very weak or absent in class K. Calcium H and K lines are present in late A spectra, but stronger in class F, and strongest in class G ...
A yellow hypergiant star, similar to V382 Carinae, that is also visble to the naked eye. CW Leonis: 560 [74] L/T eff: The nearest carbon star. V509 Cassiopeiae: 511 ± 112 [35] AD A variable yellow hypergiant whose size varied from around 680 R ☉ in 1950–1970 to 910 R ☉ in 1977, and later decreased to 390 R ☉ in the 1990s. [75] V382 ...
Yellow star labeled Juif, the French term for Jew, that was worn during the Nazi occupation of France. The yellow badge, also known as the yellow patch, the Jewish badge, or the yellow star (German: Judenstern, lit. ' Jew's star '), was an accessory that Jews were required to wear
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Marginal cases are allowed; for example, a star may be either a supergiant or a bright giant, or may be in between the subgiant and main-sequence classifications. In these cases, two special symbols are used: A slash (/) means that a star is either one class or the other. A dash (-) means that the star is in between the two classes.
Billy Joel took the state at Madison Square Garden wearing a Star of David on his jacket, just as Jews in Germany were forced to do during World War II.
An example of the nebulae that can result is IRAS 17163-3907, known as the Fried Egg, which has expelled several solar masses of material in just a few hundred years. [29] The yellow hypergiant is an expected phase of evolution as the most luminous red supergiants evolve bluewards, but they may also represent a different sort of star.