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Betelgeuse's color may have changed from yellow (or possibly orange; i.e. a yellow supergiant) to red in the last few thousand years, based on a 2022 review of historical records. This color change combined with the CMD suggest a mass of 14 M ☉ and age of 14 Myr, and a distance from 125 to 150 parsecs (~400 to 500 light years). [12]
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 ...
Artist's illustration of Wezen, a yellow supergiant 1,600 light-years away in the Canis Major constellation. Delta Canis Majoris is a supergiant of class F8. Its surface temperature is around 5,818 K, [12] and it is 14 to 15 times more massive than the Sun. Its absolute magnitude is −6.77, [8] and it lies around 1,600 light-years away. It is ...
It has Arabic to English translations and English to Arabic, as well as a significant quantity of technical terminology. It is useful to translators as its search results are given in context. [ 6 ] Almaany offers correspondent meanings for Arabic terms with semantically similar words and is widely used in Arabic language research. [ 7 ]
It is a yellow-white supergiant of spectral type F8Iab and magnitude 1.84, around 1605 light-years from Earth. [42] With a traditional name meaning "the weight", Wezen is 17 times as massive and 50,000 times as luminous as the Sun.
In 1983, Olin J. Eggen reported that HD 271182 was a pseudo-Cepheid variable, [17] a supergiant in the Hertzsprung gap with less periodic light variations than true Cepheids. [18] This star in particular showed an amplitude of 0.25 mag in the V band. Similarities were noted between it and two other pseudo-Cepheids, namely R Puppis and HD 269879 ...
The FDIC is an independent government agency charged with maintaining stability and public confidence in the U.S. financial system and providing insurance on consumer deposit accounts.
The most luminous member is the ~2nd magnitude yellow supergiant Mirfak, also known as Alpha Persei. Bright members also include Delta, Sigma, Psi, 29, 30, 34, and 48 Persei. The Hipparcos satellite and infrared color-magnitude diagram fitting have been used to establish a distance to the cluster of ~560 light-years (172 pc).