| 词条 | Zeta Capricorni |
| 释义 |
|name=Zeta Capricorni}}{{Starbox image | image = | caption=Location of ζ Capricorni (circled) }}{{Starbox observe |constell=Capricornus |epoch=J2000 | ra = {{RA|21|26|40.02634}}[1] | dec = {{DEC|-22|24|40.8042}}[1] |appmag_v=3.74[2] }}{{Starbox character |class=G8IIIp / DA2.2[4] |b-v=+0.99[3] |u-b=+0.57[3] }}{{Starbox astrometry |radial_v=2.10[2] |prop_mo_ra=-2.23[1] |prop_mo_dec=18.10[1] |parallax=8.46 |p_error=0.21 |parallax_footnote=[1] |absmag_v=−1.59[4] }}{{Starbox orbit |reference=[5] |primary=ζ Cap A |name=ζ Cap B |period_unitless=2378.2 d |axis_unitless=8.56 ± 4.3 mas |inclination=111.7 ± 20.7 |node=190.7 ± 50.0 |periastron=JD 2445996 |eccentricity=0.2821 |periarg=233.8 ± 19.8 }}{{Starbox detail |component1=ζ Cap A |temperature=5397 ± 82[6] |gravity=1.48 ± 0.16[6] |metal_fe=−0.14 ± 0.10[6] |luminosity=490[16] |radius=~29[7] |mass=3.99 ± 0.12[8] |component2=ζ Cap B |mass2=1[9] |temperature2=23000[9] }}{{Starbox catalog |names=ζ Cap, 34 Cap, CD-22° 15388, HD 204075, HIP 105881, SAO 190341, HR 8204, GC 30020, CCDM J21267-2225AB, WDS J21267-2225AB}}{{Starbox reference |Simbad=HD+204075 }}{{Starbox end}} Zeta Capricorni, Latinized from ζ Capricorni, is a fourth-magnitude star in the constellation Capricornus. ζ Capricorni is a binary star, with the primary component ζ Capricorni A being a yellow G-type giant with an apparent magnitude of +3.77. It is considered one of the prototypical examples of a Barium star, properties of which include overabundances of carbon molecules (such as C2) and s-process elements. Zeta Capricorni has an overabundance of the s-process element praseodymium. Its companion, ζ Capricorni B is a hydrogen-rich white dwarf. It is about as massive as the Sun, and its temperature is 23,000 K.[9] The ζ Capricorni binary system is approximately 390 light years from Earth, based on its parallax.[1] Chinese NameIn Chinese, {{lang|zh|十二國}} ({{lang|zh-Latn|Shíer Guó}}), meaning Twelve States, refers to an asterism which represents twelve ancient states in the Spring and Autumn period and the Warring States period, consisting of ζ Capricorni, φ Capricorni, ι Capricorni, 38 Capricorni, 35 Capricorni, 36 Capricorni, χ Capricorni, θ Capricorni, 30 Capricorni, 33 Capricorni, 19 Capricorni, 26 Capricorni, 27 Capricorni, 20 Capricorni, η Capricorni and 21 Capricorni.[10] Consequently, ζ Capricorni itself represents the state of Yan ({{lang|zh|燕}}).,[11] together with ν Ophiuchi in Left Wall of Heavenly Market Enclosure (asterism).[12] References
1. ^1 2 3 4 5 {{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }} Vizier catalog entry {{Stars of Capricornus}}2. ^1 {{cite simbad|title=zet Cap|access-date=28 December 2016}} 3. ^1 {{cite journal| author1=Mermilliod, J.-C.| title=Compilation of Eggen's UBV data, transformed to UBV (unpublished)| journal=Catalogue of Eggen's UBV data|date=1986|bibcode= 1986EgUBV........0M }} 4. ^{{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | postscript=. }} 5. ^{{cite journal|title=Re-processing the Hipparcos Transit Data and Intermediate Astrometric Data of spectroscopic binaries. I. Ba, CH and Tc-poor S stars|author1=Pourbaix, D.|journal=Astronomy and Astrophysics Supplement|volume=145|pages=161–183|date=2000|bibcode=2000A&AS..145..161P|doi=10.1051/aas:2000346|arxiv=astro-ph/0006175}} 6. ^1 2 {{cite journal|display-authors=1|last1=Prugniel|first1=Ph.|last2=Vauglin|first2=I.|last3=Koleva|first3=M.|title=The atmospheric parameters and spectral interpolator for the MILES stars|journal=Astronomy & Astrophysics|volume=531 |page=A165|date=July 2011|doi=10.1051/0004-6361/201116769|bibcode=2011A&A...531A.165P|postscript=.|arxiv=1104.4952}} 7. ^{{cite web|title=ZETA CAP (Zeta Capricorni)|url=http://stars.astro.illinois.edu/sow/zetacap.html|accessdate=30 December 2016}} 8. ^1 {{cite journal|bibcode=2010AN....331..349H|doi=10.1002/asna.200911355|arxiv=1003.2335|title=Masses and luminosities of O- and B-type stars and red supergiants|journal=Astronomische Nachrichten|volume=331|issue=4|pages=349|year=2010|last1=Hohle|first1=M.M.|last2=Neuhäuser|first2=R.|last3=Schutz|first3=B.F.}} 9. ^1 2 3 {{cite journal|bibcode=2013MNRAS.435.2077H|doi=10.1093/mnras/stt1433|arxiv=1307.8047|title=Where are all the Sirius-like binary systems?|journal=Monthly Notices of the Royal Astronomical Society|volume=435|issue=3|pages=2077|year=2013|last1=Holberg|first1=J. B.|last2=Oswalt|first2=T. D.|last3=Sion|first3=E. M.|last4=Barstow|first4=M. A.|last5=Burleigh|first5=M. R.}} 10. ^{{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}}. 11. ^Richard Hinckley Allen: Star Names — Their Lore and Meaning: Capricornus 12. ^{{zh icon}} AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 6 月 23 日 11 : G-type giants|White dwarfs|Barium stars|Spectroscopic binaries|Bayer objects|Capricornus (constellation)|Durchmusterung objects|Flamsteed objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects |
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