Английская Википедия:Gamma Serpentis
Шаблон:Short description Шаблон:Starbox begin Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox end Gamma Serpentis (γ Serpentis, γ Ser) is a star in the equatorial constellation Serpens, in the part of the constellation that represents the serpent's head (Serpens Caput). It has an apparent visual magnitude +3.85,[1] which means it is visible to the naked eye. Based upon parallax measurements by the Hipparcos spacecraft, this star is approximately 36.7 light years from Earth.[2]
Properties
Gamma Serpentis is an ordinary F-type main sequence star with a stellar classification of F6 V.[1] It is larger and more massive than the Sun, with three times the solar luminosity.[3] Based upon its mass, it may have a convection zone in its core region.[4] The projected rotational velocity along the equator is 10.2[3] km/s. It is younger than the Sun with an estimated age of 3.5 billion years.[5] The effective temperature of the star's outer atmosphere is 6,350 K,[1] giving it the yellow-white-hued glow of an F-type star.[6]
Occasionally Gamma Serpentis is listed as having two 10th magnitude companions, but it appears that these stars are just optical neighbours.
Etymology
It was a member of indigenous Arabic asterism al-Nasaq al-Sha'āmī, "the Northern Line" of al-Nasaqān "the Two Lines",[7] along with β Her (Kornephoros), γ Her (Hejian, Ho Keen) and β Ser (Chow).[8]
According to the catalogue of stars in the Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars, al-Nasaq al-Sha'āmī or Nasak Shamiya were the title for three stars:β Ser as Nasak Shamiya I, γ Ser as Nasak Shamiya II, γ Her as Nasak Shamiya III (exclude β Her).[9] The star was later given the proper name Ainalhai, from the Arabic عين الحية ‘Ayn al-Ḥayyah "the Serpent's Eye".
In Chinese, Шаблон:Lang (Шаблон:Lang), meaning Right Wall of Heavenly Market Enclosure, refers to an asterism which represents eleven old states in China and which marks the right borderline of the enclosure, consisting of γ Serpentis, β Herculis, γ Herculis, κ Herculis, β Serpentis, δ Serpentis, α Serpentis, ε Serpentis, δ Ophiuchi, ε Ophiuchi and ζ Ophiuchi.[10] Consequently, the Chinese name for γ Serpentis itself is Шаблон:Lang (Шаблон:Lang, Шаблон:Lang-en), representing the state Zheng (鄭) (or Ching),[11][12][13] together with 20 Capricorni (according to Ian Ridpath version[14]) in Twelve States (asterism).
References
External links
- Gamma Serpentis by Professor Jim Kaler.
- ↑ 1,0 1,1 1,2 Ошибка цитирования Неверный тег
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не указан текст - ↑ Jack W. Rhoads - Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars, Jet Propulsion Laboratory, California Institute of Technology; November 15, 1971
- ↑ Шаблон:In lang 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, Шаблон:ISBN.
- ↑ Star Names - R.H.Allen p.376
- ↑ Шаблон:In lang AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 6 月 24 日
- ↑ Шаблон:In lang English-Chinese Glossary of Chinese Star Regions, Asterisms and Star Name Шаблон:Webarchive, Hong Kong Space Museum. Accessed on line November 23, 2010.
- ↑ Ian Ridpath's Startales - Capricornus the Sea Goat
- Английская Википедия
- Bayer objects
- Serpens
- F-type main-sequence stars
- Solar-type stars
- Triple stars
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- Suspected variables
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- Henry Draper Catalogue objects
- Durchmusterung objects
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