Английская Википедия:Beta Arae

Содержание

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Beta Arae (β Ara, β Arae), the brightest star in the constellation of Ara, is a very luminous, relatively young, giant star with an apparent visual magnitude of 2.8 (rounded). Parallax measurements place it at roughly Шаблон:Convert from Earth.

The spectrum of this star matches a stellar classification of K3 Ib-IIa, with the luminosity class notation 'Ib-IIa' indicating that the star lies part way between a higher luminosity bright giant (IIa) and a lower luminosity supergiant (Ib). This represents two of the evolutionary stages that a massive star passes through after it has exhausted the hydrogen at its core. Beta Arae is radiating energy from its outer envelope at an effective temperature of Шаблон:Val, which causes it to take on the orange hue of a K-type star. This enlarged star appears to be rotating slowly with a projected rotational velocity of about Шаблон:Val. The abundance of elements other than hydrogen and helium, its metallicity, is more than three times that of the Sun.Шаблон:Efn

Rarely, this star is called Vasat-ül-cemre a Turkisation of Arabic وسط الجمر (wasaṭ al-jamar), meaning "middle of the embers." The constellation is named in Arabic المجمرة (al-mijmarah), meaning brazier/incense-burner. In Chinese, Шаблон:Lang (Шаблон:Lang), meaning Pestle, refers to an asterism of β, σ and α Arae. The Chinese name for β Arae is Шаблон:Lang (Шаблон:Lang, Шаблон:Lang-en.)

External links

• Шаблон:Citation
• HR 6461
• Image Beta Arae