| 释义 |
- Properties
- Naming
- References
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{{Starbox begin
| name=λ Aquarius
}}{{Starbox image
| image={{Location mark
|image=Aquarius constellation map.svg|alt=|float=center|width=280
|label=|position=right
|mark=Red circle.svg|mark_width=10|mark_link=λ Aqr
|x=341|y=437
}}
|caption=Location of λ Aquarius (circled)
}}{{Starbox observe
| epoch = J2000
| ra = {{RA|22|52|36.87441}}
| dec = {{DEC|−07|34|46.5542}}
| appmag_v = 3.722[3]
| constell = Aquarius
}}{{Starbox character
| class = {{nowrap|M2.5 IIIa Fe–1}}[4]
| b-v = +1.641[3]
| u-b = +1.721[3]
| variable = Lb[1]
}}{{Starbox astrometry
| radial_v = {{nowrap|−10.46 ± 0.53}}[8]
| prop_mo_ra = +17.02
| prop_mo_dec = +33.03
| parallax = 8.47
| p_error = 0.66
| parallax_footnote =
| absmag_v = –1.5[12]
}}{{Starbox detail
| mass = 3.6[13]
| radius =
| luminosity =
| temperature = 3,835[13]
| metal_fe = –2.25[12]
| rotational_velocity =
| age_gyr =
}}{{Starbox catalog
| names=73 Aquarii, BD–08°968, FK5 864, HD 216386, HIP 112961, HR 8698, SAO 146362.[16]
}}{{Starbox reference
| Simbad = lam+Aqr
}}{{Starbox end}}Lambda Aquarii (λ Aqr, λ Aquarii), also known as Hydor[17][18] is the Bayer designation for a star in the equatorial constellation of Aquarius. The apparent visual magnitude of this star is 3.722,[3] which is bright enough to be visible with the naked eye. It is roughly {{convert|390|ly|pc|lk=on}} from Earth.PropertiesLambda Aquarii is a red giant star with a stellar classification of M2.5 III.[4] It is classified as slow irregular variable and pulsation periods of 24.5, 32.0, and 49.5 days have been identified.[22] This star is on the asymptotic giant branch and is generating energy through the nuclear fusion of hydrogen and helium along concentric shells surrounding an inert core of carbon and oxygen.[23] NamingHydor[2] is from Greek Ὕδωρ, meaning "water", is a name given by Proclus, according to Richard Hinckley Allen.[3]In Chinese, {{lang|zh|壘壁陣}} ({{lang|zh-Latn|Lěi Bì Zhèn}}), meaning Line of Ramparts, refers to an asterism consisting of λ Aquarii, κ Capricorni, ε Capricorni, γ Capricorni, δ Capricorni, ι Aquarii, σ Aquarii, φ Aquarii, 27 Piscium, 29 Piscium, 33 Piscium and 30 Piscium.[4] Consequently, λ Aquarii itself is known as {{lang|zh|壘壁陣七}} ({{lang|zh-Latn|Lěi Bì Zhèn qī}}, {{lang-en|the Seventh Star of Line of Ramparts}}.)[5] References1. ^{{cite journal|bibcode=2009yCat....102025S|title=VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)|journal=VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S|volume=1|display-authors=etal|author1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009}}
2. ^1 {{cite web |title=Hydor |first=Jim|last=Kaler |authorlink=Jim Kaler |url=http://stars.astro.illinois.edu/sow/hydor.html |accessdate=2017-08-17}}
3. ^1 {{cite web |title=Star Names: Their Lore and Meaning |first=Richard Hinckey|last=Allen |authorlink=Richard Hinckley Allen |url=http://penelope.uchicago.edu/Thayer/E/Gazetteer/Topics/astronomy/_Texts/secondary/ALLSTA/Aquarius*.html |accessdate=2017-08-17}}
4. ^{{zh icon}} 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, {{ISBN|978-986-7332-25-7}}.
5. ^{{zh icon}} AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 7 日
6. ^1 2 {{cite conference | last1=Tsuji | first1=Takashi | contribution=Isotopic abundances of Carbon and Oxygen in Oxygen-rich giant stars | title=Convection in Astrophysics, Proceedings of IAU Symposium #239 held 21-25 August, 2006 in Prague, Czech Republic | journal=Proceedings of the International Astronomical Union | volume=2 | editor1-first=F. | editor1-last=Kupka | editor2-first=I. | editor2-last=Roxburgh | editor3-first=K. | editor3-last=Chan | pages=307–310 |date=May 2007 | doi=10.1017/S1743921307000622 | bibcode=2007IAUS..239..307T | arxiv=astro-ph/0610180 | postscript=. }}
7. ^1 {{citation | last1=Lebzelter | first1=T. | last2=Hron | first2=J. | title=BRITE stars on the AGB | journal=Communications in Asteroseismology | volume=152 | pages=178–181 |date=January 2008 | doi=10.1553/cia152s178 | bibcode=2008CoAst.152..178L | postscript=. }}
8. ^1 {{citation | display-authors=1 | last1=Famaey | first1=B. | last2=Pourbaix | first2=D. | last3=Frankowski | first3=A. | last4=van Eck | first4=S. | last5=Mayor | first5=M. | last6=Udry | first6=S. | last7=Jorissen | first7=A. | title=Spectroscopic binaries among Hipparcos M giants. I. Data, orbits, and intrinsic variations | journal=Astronomy and Astrophysics | volume=498 | issue=2 | pages=627–640 |date=May 2009 | doi=10.1051/0004-6361/200810698 | bibcode=2009A&A...498..627F | postscript=. |arxiv = 0901.0934 }}
9. ^1 2 3 4 {{citation | display-authors=1 | last1=Gutierrez-Moreno | first1=Adelina | last2=Moreno | first2=H. | last3=Stock | first3=J. | last4=Torres | first4=C. | last5=Wroblewski | first5=H. | title=A System of photometric standards | journal=Publ. Dept. Astron. Univ. Chile | publisher=Publicaciones Universidad de Chile, Department de Astronomy | volume=1 | pages=1–17 | year=1966 | bibcode=1966PDAUC...1....1G | postscript=. }}
10. ^1 {{cite simbad | title=* lam Aqr | accessdate=2012-07-01 | postscript=. }}
11. ^1 {{citation | display-authors=1 | last1=Tabur | first1=V. | last2=Bedding | first2=T. R. | last3=Kiss | first3=L. L. | last4=Moon | first4=T. T. | last5=Szeidl | first5=B. | last6=Kjeldsen | first6=H. | title=Long-term photometry and periods for 261 nearby pulsating M giants | journal=Monthly Notices of the Royal Astronomical Society | volume=400 | issue=4 | pages=1945–1961 |date=December 2009 | doi=10.1111/j.1365-2966.2009.15588.x | bibcode=2009MNRAS.400.1945T | postscript=. |arxiv = 0908.3228 }}
12. ^1 2 {{citation | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869–879 |date=September 2008 | doi=10.1111/j.1365-2966.2008.13596.x | bibcode=2008MNRAS.389..869E | postscript=. |arxiv = 0806.2878 }}
13. ^1 2 {{citation | last1=Dupree | first1=A. K. | last2=Li | first2=Timothy Q. | last3=Smith | first3=Graeme H. | title=Hubble Space Telescope Observations of Chromospheres in Metal-Deficient Field Giants | journal=The Astronomical Journal | volume=134 | issue=4 | pages=1348–1359 |date=October 2007 | doi=10.1086/520925 | bibcode=2007AJ....134.1348D | postscript=. |arxiv = 0709.1709 }}
}}External links- Image Lambda Aquarii
- [https://web.archive.org/web/20080926185552/http://www.purplehell.com/riddletools/stars.htm Named Stars ]
{{Stars of Aquarius}} 10 : Stars with proper names|Henry Draper Catalogue objects|Bayer objects|Aquarius (constellation)|Slow irregular variables|M-type giants|Flamsteed objects|HR objects|Hipparcos objects|Durchmusterung objects |