天纪一:修订间差异
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{{Starbox begin |
{{Starbox begin |
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| name = |
| name =天紀一 (ξ CrB) |
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}} |
}} |
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{{Starbox observe |
{{Starbox observe |
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| epoch = [[J2000.0]] |
| epoch = [[J2000.0]] |
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| equinox = [[J2000.0]] ([[國際天球參考系|ICRS]]) |
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| constell = [[北冕座]]<ref name=SIMBAD>{{cite web |
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| constell = [[北冕座]] |
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| url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HR+6103 |
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| 星官 = [[天紀 (星官)|天紀]]([[天市垣]]) |
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| title =Pulsating variable Star |
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| ra = {{RA|16|22|05.82391}}<ref name=vanLeeuwen2007/> |
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| publisher=Centre de Données astronomiques de Strasbourg |
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| dec = {{DEC|+30|53|31.1837}}<ref name=vanLeeuwen2007/> |
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| work=SIMBAD |
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| |
| appmag_v = 4.85<ref name=Johnson1966/> |
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| url=http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=5050&-corr=PK=HR&-out.max=9999&HR=6103 |
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| title =VizieR Detailed Page |
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| accessdate=2012-07-13}}</ref> |
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| 星官 = |
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| ra = {{RA|16|22|5.8}}<ref name=SIMBAD /><ref name=DATA /> |
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| dec = {{DEC|+30|53|31}}<ref name=SIMBAD /><ref name=DATA /> |
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| appmag_v = 4.85<ref name=SIMBAD /><ref name=DATA /> |
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}} |
}} |
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{{Starbox character |
{{Starbox character |
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| class = |
| class = K0 III<ref name=Eggleton2008/> |
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| b-v = 0.97<ref name= |
| b-v = +0.97<ref name=Johnson1966/> |
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| u-b = 0. |
| u-b = +0.80<ref name=Johnson1966/> |
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| r-i = |
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| r-i = 0.46<ref name=SIMBAD /><ref name=DATA /> |
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| variable = |
| variable = |
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}} |
}} |
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{{Starbox astrometry |
{{Starbox astrometry |
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| radial_v = 0. |
| radial_v = {{Val|−29.20|0.16}}<ref name=Massarotti2008/> |
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| prop_mo_ra = |
| prop_mo_ra = −97.43<ref name=vanLeeuwen2007/> |
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| prop_mo_dec = +107.45<ref name=vanLeeuwen2007/> |
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| parallax = 0.016 |
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| |
| parallax = 17.78 |
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| p_error = 0.25 |
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| parallax_footnote = <ref name=vanLeeuwen2007/> |
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| absmag_v = +1.04<ref name=Takeda2008/> |
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}} |
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{{Starbox detail |
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| source = <ref name=Massarotti2008/> |
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| mass = 2.36<ref name=Takeda2008/> |
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| radius = 8 |
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| luminosity = 36 |
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| temperature = {{Val|4853|5|fmt=commas}} |
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| gravity = 2.9 |
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| metal_fe = −0.08 |
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| rotational_velocity = 2.8 |
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| age_myr = 676<ref name=Takeda2008/> |
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}} |
}} |
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{{Starbox catalog |
{{Starbox catalog |
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| names = [[拜耳命名法|ξ 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/> |
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| names =BD+31 2845,[[SAO星表|SAO]] 65254,[[HD星表|HD]] 147677,[[HR星表|HR]] 6103}} |
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}} |
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{{Starbox reference |Simbad=HR+6103}} |
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{{Starbox reference |
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| Simbad = ksi+CrB |
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}} |
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{{Starbox end}} |
{{Starbox end}} |
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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<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[[毫角秒|mas]]的[[恆星視差|視差]] <ref name=vanLeeuwen2007/>,它距離[[太陽]]約183[[光年]]。 |
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'''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}}。 |
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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[[橙矮星|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/>。 |
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== 参考文献 == |
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{{reflist}} |
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== 參考資料 == |
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{{reflist|refs= |
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<ref name=vanLeeuwen2007>{{citation |
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| title=Validation of the new Hipparcos reduction |
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| last1=van Leeuwen | first1=F. |
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| journal=Astronomy and Astrophysics |
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| volume=474 | issue=2 | pages=653–664 | date=2007 |
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| arxiv=0708.1752 | bibcode=2007A&A...474..653V |
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| doi=10.1051/0004-6361:20078357 | s2cid=18759600 | postscript=. }}</ref> |
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<ref name=Alves2000>{{citation |
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| last1=Alves | first1=David R. |
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| title=K-Band Calibration of the Red Clump Luminosity |
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| journal=The Astrophysical Journal |
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| volume=539 | issue=2 | pages=732–741 | date=August 2000 |
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| doi=10.1086/309278 | bibcode=2000ApJ...539..732A |
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| arxiv=astro-ph/0003329 | s2cid=16673121 |
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| postscript=. }}</ref> |
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<ref name=Hartkopf2009>{{citation |
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| title=Speckle Interferometry at Mount Wilson Observatory: Observations Obtained in 2006-2007 and 35 New Orbits |
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| journal=The Astronomical Journal | postscript=. |
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| volume=138 | issue=3 | pages=813 | year=2009 |
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| last1=Hartkopf | first1=William I. | last2=Mason | first2=Brian D. |
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| 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> |
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<ref name=Takeda2008>{{citation |
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| display-authors=1 | last1=Takeda | first1=Yoichi |
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| last2=Sato | first2=Bun'ei | last3=Murata | first3=Daisuke |
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| title=Stellar Parameters and Elemental Abundances of Late-G Giants |
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| journal=Publications of the Astronomical Society of Japan |
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| volume=60 | issue=4 | pages=781–802 | date=August 2008 |
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| bibcode=2008PASJ...60..781T | doi=10.1093/pasj/60.4.781 |
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| arxiv = 0805.2434 | s2cid=16258166 | postscript=.}}</ref> |
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<ref name=Eggleton2008>{{citation |
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| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. |
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| title=A catalogue of multiplicity among bright stellar systems |
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| journal=[[Monthly Notices of the Royal Astronomical Society]] |
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| volume=389 | issue=2 | pages=869–879 | date=September 2008 |
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| doi=10.1111/j.1365-2966.2008.13596.x | bibcode=2008MNRAS.389..869E |
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| postscript=. |arxiv = 0806.2878 | s2cid=14878976 }}</ref> |
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<ref name=Massarotti2008>{{citation | display-authors=1 |
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| last1=Massarotti | first1=Alessandro | last2=Latham | first2=David W. |
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| last3=Stefanik | first3=Robert P. | last4=Fogel | first4=Jeffrey |
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| title=Rotational and radial velocities for a sample of 761 HIPPARCOS giants and the role of binarity |
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| journal=The Astronomical Journal | postscript=. |
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| volume=135 | issue=1 | pages=209–231 | date=January 2008 |
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| doi=10.1088/0004-6256/135/1/209 | bibcode=2008AJ....135..209M | s2cid=121883397 | doi-access=free }}</ref> |
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<ref name=Johnson1966>{{citation | display-authors=1 |
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| last1=Johnson | first1=H. L. | last2=Iriarte | first2=B. |
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| last3=Mitchell | first3=R. I. | last4=Wisniewskj | first4=W. Z. |
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| title=UBVRIJKL photometry of the bright stars |
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| journal=Communications of the Lunar and Planetary Laboratory |
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| volume=4 | issue=99 | year=1966 |
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| page=99 | bibcode=1966CoLPL...4...99J | postscript=. }}</ref> |
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<ref name=SIMBAD>{{cite simbad |
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| title=ksi CrB |
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| access-date=2017-05-03 }}</ref> |
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}} |
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{{北冕座|state=collapsed}} |
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{{star-stub}} |
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{{DEFAULTSORT:Xi Coronae Borealis}} |
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{{北冕座恒星}} |
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[[Category:K型巨星]] |
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[[Category:水平分支星]] |
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[[Category:聯星]] |
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[[Category:北冕座]] |
[[Category:北冕座]] |
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[[Category:拜耳天體|北冕座, ξ]] |
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[[Category: BD、CD和CP天體]] |
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[[Category:佛氏天體|北冕座, 19]] |
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[[Category:HD和HDE天體|147677]] |
[[Category:HD和HDE天體|147677]] |
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[[Category:HIP天體|080181]] |
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[[Category:HR天體|6103]] |
[[Category:HR天體|6103]] |
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[[Category: |
[[Category:天纪 (星官)]] |
2024年6月25日 (二) 08:52的最新版本
觀測資料 曆元 J2000.0 | |
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星座 | 北冕座 |
星官 | 天紀(天市垣) |
赤經 | 16h 22m 05.82391s[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 (Rv) | ±0.16 −29.20[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 (MV) | +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 | ±5 4,853K |
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 | |
參考資料庫 | |
SIMBAD | 资料 |
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
[编辑]- ^ 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.