天纪一：修订间差异

**天紀一（ξ CrB）**
觀測資料; 曆元 J2000.0
星座	北冕座
星官	天紀（天市垣）
赤經	16h 22m 05.82391s
赤緯	+30° 53′ 31.1837″
視星等（V）	4.85
特性
光谱分类	K0 III
U−B 色指数	+0.80
B−V 色指数	+0.97
天体测定
徑向速度 (Rv)	−29.20±0.16 km/s
自行 (μ)	赤经：−97.43 mas/yr ; 赤纬：+107.45 mas/yr
视差 (π)	17.78 ± 0.25 mas
距离	183 ± 3 ly ; (56.2 ± 0.8 pc)
绝对星等 (MV)	+1.04
詳細資料
質量	2.36 M☉
半徑	8 R☉
表面重力 (log g)	2.9
亮度	36 L☉
溫度	4,853±5 K
金属量 [Fe/H]	−0.08 dex
自轉速度 (v sin i)	2.8 km/s
年齡	676 Myr
其他命名
	ξ CrB、19 CrB、 BD+31° 2845、HD147677、HIP 80181、 HR 6103、SAO65254、WDS J16221+3054A
參考資料庫
SIMBAD	资料

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天紀一（ξ CrB）是在北天星座北冕座的一對聯星系統^[3]。它是肉眼可見的，綜合視星等為4.85^[2]。基於從地球上看每年偏移17.78mas的視差 ^[1]，它距離太陽約183光年。

截至 2009 年，該聯星對的角距離為91MAS，位置角為139.4°^[7]。較亮的成員，主星Aa^[7]，是一顆演化的K型巨星，恆星分類為K0 III^[3]。它是一顆紅群聚恆星，通過氦融合在其核心產生能量^[8]。估計這顆恆星的質量是太陽質量的2.36倍，並且已經膨脹到太陽半徑的8倍。它在4,853K的有效溫度下，從其光球輻射的光度是太陽光度的36倍^[4]。

參考資料

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357.
^ ^2.0 ^2.1 ^2.2 ^2.3 Johnson, H. L.; et al, UBVRIJKL photometry of the bright stars, Communications of the Lunar and Planetary Laboratory, 1966, 4 (99): 99, Bibcode:1966CoLPL...4...99J.
^ ^3.0 ^3.1 ^3.2 Eggleton, P. P.; Tokovinin, A. A., A catalogue of multiplicity among bright stellar systems, Monthly Notices of the Royal Astronomical Society, September 2008, 389 (2): 869–879, Bibcode:2008MNRAS.389..869E, S2CID 14878976, arXiv:0806.2878 , doi:10.1111/j.1365-2966.2008.13596.x.
^ ^4.0 ^4.1 ^4.2 Massarotti, Alessandro; et al, Rotational and radial velocities for a sample of 761 HIPPARCOS giants and the role of binarity, The Astronomical Journal, January 2008, 135 (1): 209–231, Bibcode:2008AJ....135..209M, S2CID 121883397, doi:10.1088/0004-6256/135/1/209 .
^ ^5.0 ^5.1 ^5.2 Takeda, Yoichi; et al, Stellar Parameters and Elemental Abundances of Late-G Giants, Publications of the Astronomical Society of Japan, August 2008, 60 (4): 781–802, Bibcode:2008PASJ...60..781T, S2CID 16258166, arXiv:0805.2434 , doi:10.1093/pasj/60.4.781.
^ ksi CrB. SIMBAD. 斯特拉斯堡天文資料中心.
^ ^7.0 ^7.1 Hartkopf, William I.; Mason, Brian D., Speckle Interferometry at Mount Wilson Observatory: Observations Obtained in 2006-2007 and 35 New Orbits (PDF), The Astronomical Journal, 2009, 138 (3): 813, Bibcode:2009AJ....138..813H, doi:10.1088/0004-6256/138/3/813 , （原始内容存档于September 25, 2017）.
^ Alves, David R., K-Band Calibration of the Red Clump Luminosity, The Astrophysical Journal, August 2000, 539 (2): 732–741, Bibcode:2000ApJ...539..732A, S2CID 16673121, arXiv:astro-ph/0003329 , doi:10.1086/309278.

[vanLeeuwen2007-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357.

[Johnson1966-2] 2.0 ^2.1 ^2.2 ^2.3 Johnson, H. L.; et al, UBVRIJKL photometry of the bright stars, Communications of the Lunar and Planetary Laboratory, 1966, 4 (99): 99, Bibcode:1966CoLPL...4...99J.

[Eggleton2008-3] 3.0 ^3.1 ^3.2 Eggleton, P. P.; Tokovinin, A. A., A catalogue of multiplicity among bright stellar systems, Monthly Notices of the Royal Astronomical Society, September 2008, 389 (2): 869–879, Bibcode:2008MNRAS.389..869E, S2CID 14878976, arXiv:0806.2878 , doi:10.1111/j.1365-2966.2008.13596.x.

[Massarotti2008-4] 4.0 ^4.1 ^4.2 Massarotti, Alessandro; et al, Rotational and radial velocities for a sample of 761 HIPPARCOS giants and the role of binarity, The Astronomical Journal, January 2008, 135 (1): 209–231, Bibcode:2008AJ....135..209M, S2CID 121883397, doi:10.1088/0004-6256/135/1/209 .

[Takeda2008-5] 5.0 ^5.1 ^5.2 Takeda, Yoichi; et al, Stellar Parameters and Elemental Abundances of Late-G Giants, Publications of the Astronomical Society of Japan, August 2008, 60 (4): 781–802, Bibcode:2008PASJ...60..781T, S2CID 16258166, arXiv:0805.2434 , doi:10.1093/pasj/60.4.781.

[SIMBAD-6] si CrB. SIMBAD. 斯特拉斯堡天文資料中心.

[Hartkopf2009-7] 7.0 ^7.1 Hartkopf, William I.; Mason, Brian D., Speckle Interferometry at Mount Wilson Observatory: Observations Obtained in 2006-2007 and 35 New Orbits (PDF), The Astronomical Journal, 2009, 138 (3): 813, Bibcode:2009AJ....138..813H, doi:10.1088/0004-6256/138/3/813 , （原始内容存档于September 25, 2017）.

[Alves2000-8] Alves, David R., K-Band Calibration of the Red Clump Luminosity, The Astrophysical Journal, August 2000, 539 (2): 732–741, Bibcode:2000ApJ...539..732A, S2CID 16673121, arXiv:astro-ph/0003329 , doi:10.1086/309278.

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@@ 第1行： / 第1行： @@
 {{Starbox begin
-| name = 北冕座ξ
+ | name =天紀一 （ξ CrB）
 }}
 {{Starbox observe
-| epoch = [[J2000.0]]
+ | epoch = [[J2000.0]]
+ | equinox = [[J2000.0]] ([[國際天球參考系|ICRS]])
-| constell = [[北冕座]]<ref name=SIMBAD>{{cite web
+ | constell = [[北冕座]]
- | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HR+6103
+ | 星官 = [[天紀 (星官)|天紀]]（[[天市垣]]）
- | title=Pulsating variable Star
+ | ra = {{RA|16|22|05.82391}}<ref name=vanLeeuwen2007/>
- | publisher=Centre de Données astronomiques de Strasbourg
+ | dec = {{DEC|+30|53|31.1837}}<ref name=vanLeeuwen2007/>
- | work=SIMBAD
+ | appmag_v = 4.85<ref name=Johnson1966/>
- | accessdate=2012-07-13
- | archive-date=2020-08-16
- | archive-url=https://web.archive.org/web/20200816050000/http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HR+6103
- }}</ref><ref name=DATA>{{cite web
- | url=http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=5050&-corr=PK=HR&-out.max=9999&HR=6103
- | title=VizieR Detailed Page
- | accessdate=2012-07-13
- | archive-date=2016-03-05
- | archive-url=https://web.archive.org/web/20160305001929/http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=5050&-corr=PK=HR&-out.max=9999&HR=6103
- | dead-url=no
- }}</ref>
-| 星官 = [[天纪]]（[[天市垣]]）
-| ra = {{RA|16|22|5.8}}<ref name=SIMBAD /><ref name=DATA />
-| dec = {{DEC|+30|53|31}}<ref name=SIMBAD /><ref name=DATA />
-| appmag_v = 4.85<ref name=SIMBAD /><ref name=DATA />
 }}
 {{Starbox character
-| class = K0III<ref name=SIMBAD /><ref name=DATA />
+ | class = K0&nbsp;III<ref name=Eggleton2008/>
-| b-v = 0.97<ref name=SIMBAD /><ref name=DATA />
+ | b-v = +0.97<ref name=Johnson1966/>
-| u-b = 0.8<ref name=SIMBAD /><ref name=DATA />
+ | u-b = +0.80<ref name=Johnson1966/>
+ | r-i =
-| r-i = 0.46<ref name=SIMBAD /><ref name=DATA />
-| variable =
+ | variable =
 }}
 {{Starbox astrometry
-| radial_v = 0.8
+ | radial_v = {{Val|−29.20|0.16}}<ref name=Massarotti2008/>
-| prop_mo_ra = -29
+ | prop_mo_ra = −97.43<ref name=vanLeeuwen2007/>
+ | prop_mo_dec = +107.45<ref name=vanLeeuwen2007/>
-| parallax = 0.016
-| p_error =
+ | parallax = 17.78
+ | p_error = 0.25
+ | parallax_footnote = <ref name=vanLeeuwen2007/>
+ | absmag_v = +1.04<ref name=Takeda2008/>
+}}
+{{Starbox detail
+ | source = <ref name=Massarotti2008/>
+ | mass = 2.36<ref name=Takeda2008/>
+ | radius = 8
+ | luminosity = 36
+ | temperature = {{Val|4853|5|fmt=commas}}
+ | gravity = 2.9
+ | metal_fe = −0.08
+ | rotational_velocity = 2.8
+ | age_myr = 676<ref name=Takeda2008/>
 }}
 {{Starbox catalog
+ | names      = [[拜耳命名法|ξ&nbsp;CrB]]、[[佛蘭斯蒂德命名法|19 CrB]]、 [[波昂星表|BD]]+31° 2845、[[HD星表|HD]]147677、[[依巴谷星表|HIP]] 80181、 [[亮星星表|HR]] 6103、[[SAO星表|SAO]]65254、[[華盛頓雙星目錄|WDS]] J16221+3054A<ref name=SIMBAD/>
-| names =BD+31 2845，[[SAO星表|SAO]] 65254，[[HD星表|HD]] 147677，[[HR星表|HR]] 6103}}
+}}
-{{Starbox reference |Simbad=HR+6103}}
+{{Starbox reference
+ | Simbad = ksi+CrB
+}}
 {{Starbox end}}
+'''天紀一'''（'''ξ CrB'''）是在北天[[星座]][[北冕座]]的一對[[聯星]]系統<ref name=Eggleton2008/>。它是肉眼可見的，綜合[[視星等]]為4.85<ref name=Johnson1966/>。基於從地球上看每年偏移17.78[[毫弧秒|mas]]的[[恆星視差|視差]] <ref name=vanLeeuwen2007/>，它距離[[太陽]]約183[[光年]]。
-'''北冕座ξ'''，又名'''BD+31 2845'''，'''HD 147677'''、'''SAO 65254'''、'''HR 6103'''，是[[北冕座]]的一颗恒星<ref name=SIMBAD /><ref name=DATA />，视星等为4.85，位于[[銀道座標系|銀經]]50.77，[[銀道座標系|銀緯]]44.21，其[[B1900.0]]坐标为赤經{{RA|16|18|12}}，赤緯{{DEC|+31|44.21|26}}。
+截至 2009 年，該聯星對的[[角距離]]為91MAS，[[位置角]]為139.4°<ref name=Hartkopf2009/>。較亮的成員，主星Aa<ref name=Hartkopf2009/>，是一顆[[恆星演化|演化]]的[[K型恆星|K型]][[巨星]]，[[恆星分類]]為K0 III<ref name=Eggleton2008/>。它是一顆[[紅群聚]]恆星，通過[[氦融合]]在其[[恆星核心|核心]]產生能量<ref name=Alves2000/>。估計這顆恆星的質量是[[太陽質量]]的2.36倍，並且已經膨脹到[[太陽半徑]]的8倍。它在4,853K的[[有效溫度]]下，從其[[光球]]輻射的[[光度]]是[[太陽光度]]的36倍<ref name=Massarotti2008/>。
-== 参考文献 ==
-{{reflist}}
+== 參考資料 ==
-{{star-stub}}
+{{reflist|refs=
+<ref name=vanLeeuwen2007>{{citation
+ | title=Validation of the new Hipparcos reduction
+ | 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 | s2cid=18759600 | postscript=. }}</ref>
+<ref name=Alves2000>{{citation
+ | last1=Alves | first1=David R.
+ | title=K-Band Calibration of the Red Clump Luminosity
+ | journal=The Astrophysical Journal
+ | volume=539 | issue=2 | pages=732–741 | date=August 2000
+ | doi=10.1086/309278 | bibcode=2000ApJ...539..732A
+ | arxiv=astro-ph/0003329 | s2cid=16673121
+ | postscript=. }}</ref>
+<ref name=Hartkopf2009>{{citation
+ | title=Speckle Interferometry at Mount Wilson Observatory: Observations Obtained in 2006-2007 and 35 New Orbits
+ | journal=The Astronomical Journal | postscript=.
+ | volume=138 | issue=3 | pages=813 | year=2009
+ | last1=Hartkopf | first1=William I. | last2=Mason | first2=Brian D.
+ | bibcode=2009AJ....138..813H | doi=10.1088/0004-6256/138/3/813 | url=https://apps.dtic.mil/sti/pdfs/ADA505053.pdf| archive-url=https://web.archive.org/web/20170925092738/http://www.dtic.mil/get-tr-doc/pdf?AD=ADA505053| url-status=live| archive-date=September 25, 2017| doi-access=free }}</ref>
+<ref name=Takeda2008>{{citation
+ | display-authors=1 | last1=Takeda | first1=Yoichi
+ | last2=Sato | first2=Bun'ei | last3=Murata | first3=Daisuke
+ | title=Stellar Parameters and Elemental Abundances of Late-G Giants
+ | journal=Publications of the Astronomical Society of Japan
+ | volume=60 | issue=4 | pages=781–802 | date=August 2008
+ | bibcode=2008PASJ...60..781T | doi=10.1093/pasj/60.4.781
+ | arxiv = 0805.2434 | s2cid=16258166 | postscript=.}}</ref>
+<ref name=Eggleton2008>{{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 | s2cid=14878976 }}</ref>
+<ref name=Massarotti2008>{{citation | display-authors=1
+ | last1=Massarotti | first1=Alessandro | last2=Latham | first2=David W.
+ | last3=Stefanik | first3=Robert P. | last4=Fogel | first4=Jeffrey
+ | title=Rotational and radial velocities for a sample of 761 HIPPARCOS giants and the role of binarity
+ | journal=The Astronomical Journal | postscript=.
+ | volume=135 | issue=1 | pages=209–231 | date=January 2008
+ | doi=10.1088/0004-6256/135/1/209 | bibcode=2008AJ....135..209M | s2cid=121883397 | doi-access=free }}</ref>
+<ref name=Johnson1966>{{citation | display-authors=1
+ | last1=Johnson | first1=H. L. | last2=Iriarte | first2=B.
+ | last3=Mitchell | first3=R. I. | last4=Wisniewskj | first4=W. Z.
+ | title=UBVRIJKL photometry of the bright stars
+ | journal=Communications of the Lunar and Planetary Laboratory
+ | volume=4 | issue=99 | year=1966
+ | page=99 | bibcode=1966CoLPL...4...99J | postscript=. }}</ref>
+<ref name=SIMBAD>{{cite simbad
+ | title=ksi CrB
+ | access-date=2017-05-03 }}</ref>
+}}
-{{北冕座}}
+{{北冕座|state=collapsed}}
+{{DEFAULTSORT:Xi Coronae Borealis}}
+[[Category:K-型巨星]]
+[[Category:水平分支星]]
+[[Category:聯星]]
 [[Category:北冕座]]
+[[Category:拜耳天體|北冕座, ξ]]
+[[Category: BD、CD和CP天體]]
+[[Category:佛氏天體|北冕座, 19]]
 [[Category:HD和HDE天體|147677]]
+[[Category:HIP天體|080181]]
 [[Category:HR天體|6103]]
-[[Category:SAO天體|65254]]
 [[Category:天纪 (星官)]]

觀測資料曆元 J2000.0
星座	北冕座
星官	天紀（天市垣）
赤經	16^h 22^m 05.82391^s^[1]
赤緯	+30° 53′ 31.1837″^[1]
視星等（V）	4.85^[2]
特性
光谱分类	K0 III^[3]
U−B 色指数	+0.80^[2]
B−V 色指数	+0.97^[2]
天体测定

徑向速度 (R_v)	2998708000000000000♠−29.20±0.16^[4] km/s
自行 (μ)	赤经：−97.43^[1] mas/yr 赤纬：+107.45^[1] mas/yr
视差 (π)	17.78 ± 0.25^[1] mas
距离	183 ± 3 ly (56.2 ± 0.8 pc)
绝对星等 (M_V)	+1.04^[5]

詳細資料 ^{^[4]}

質量	2.36^[5] M_☉
半徑	8 R_☉
表面重力 (log g)	2.9
亮度	36 L_☉
溫度	7003485300000000000♠4,853±5 K
金属量 [Fe/H]	−0.08 dex
自轉速度 (v sin i)	2.8 km/s
年齡	676^[5] Myr

其他命名
ξ CrB、19 CrB、 BD+31° 2845、HD147677、HIP 80181、 HR 6103、SAO65254、WDS J16221+3054A^[6]
參考資料庫
SIMBAD	资料