Epsilon Andromedae
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Epsilon Andromedae is a star in the constellation of Andromeda.[5] Its identifier is a Bayer designation that is Latinized from ε Andromedae, and abbreviated eps And or ε And, respectively. This star can be seen with the naked eye, having an apparent visual magnitude of 4.4.[2] Based upon an annual parallax shift of 19.2 mas as seen from Earth,[1] it is located approximately 169 light years from the Sun. The system is moving closer to the Sun with a radial velocity of −84 km/s.[7] Its orbit in the Milky Way is highly eccentric, causing it to move rapidly relative to the Sun and its neighboring stars.[9]
This is an evolved G-type giant star with a stellar classification of G6 III Fe−3 CH1.[4] The suffix notation indicates there is a strong underabundance of iron in the spectrum, and an overabundance of cyanogen (CN). ε Andromedae is believed to be a red clump[3] star which is fusing helium in its core. It has about the same mass as the Sun, but has expanded to nine times the Sun's radius. The star is radiating 51 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,082 K.[7]
Naming
In Chinese, Script error: No such module "Lang". (Script error: No such module "Lang".), meaning Legs (asterism), refers to an asterism consisting of ε Andromedae, η Andromedae, 65 Piscium, ζ Andromedae, δ Andromedae, π Andromedae, ν Andromedae, μ Andromedae, β Andromedae, σ Piscium, τ Piscium, 91 Piscium, υ Piscium, φ Piscium, χ Piscium and ψ¹ Piscium. Consequently, the Chinese name for ε Andromedae itself is Script error: No such module "Lang". (Script error: No such module "Lang"., Template:Langx.)[10]
References
External links
Template:Sky Template:Stars of Andromeda
- ↑ a b c d e Template:Cite Gaia EDR3
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- ↑ HR 163, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line August 28, 2008.
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<ref>tag; no text was provided for refs namedkaler - ↑ Template:In lang AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 5 月 19 日 Template:Webarchive