Английская Википедия:Gamma Eridani

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Gamma Eridani (γ Eridani, abbreviated Gamma Eri, γ Eri), formally named Zaurak Шаблон:IPAc-en, is a variable star in the constellation of Eridanus. It is visible to the naked eye with an apparent visual magnitude that varies around 2.9, and lies at a distance of about 203 light years from the Sun, as determined by the Hipparcos astrometry satellite.

Description

Файл:GammaEriLightCurve.png

A light curve for Gama Eridani, plotted from Hipparcos data

Gamma Eridani has been defined as a standard star for the spectral class M0III-IIIb. It is a red giant on the asymptotic giant branch, fusing hydrogen and helium in separate shells outside its core. Observations published in 1960 showed it to vary in brightness by a few hundredths of a magnitude. In 1977, it was officially listed as a variable star in the General Catalogue of Variable Stars although the class of variable is uncertain.

Nomenclature

Gamma Eridani is the star's Bayer designation. It has the traditional name Zaurak, alternatively spelled Zaurac, which is one of the Persian words for 'boat'. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars. The WGSN's first bulletin of July 2016 included a table of the first two batches of names approved by the WGSN; which included Zaurak for this star.

In Chinese, Шаблон:Lang (Шаблон:Lang), meaning Celestial Meadows, refers to an asterism consisting of γ Eridani, δ Eridani, π Eridani, ε Eridani, ζ Eridani, η Eridani, π Ceti, τ¹ Eridani, τ² Eridani, τ³ Eridani, τ⁴ Eridani, τ⁵ Eridani, τ⁶ Eridani, τ⁷ Eridani, τ⁸ Eridani and τ⁹ Eridani. Consequently, the Chinese name for γ Eridani itself is Шаблон:Lang (Шаблон:Lang, Шаблон:Lang-en.)

USS Zaurak (AK-117) was a United States Navy Crater class cargo ship named after the star. Шаблон:Clear left