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Add 1 book for verifiability (20251017sim)) #IABot (v2.0.9.5) (GreenC bot

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{{Starbox begin
| name = R136a2
}}
{{Starbox image
| image = [[File:R136a1 star.jpg|240 px]]
| caption = R136星團的中心區域近[[紅外線]]影像。[[R136a1]]和R136a2是位於中心的兩顆非常接近的明亮恆星，其中R136a2是兩者中較暗的一顆。
| credit= ESO
}}
{{Starbox observe
| epoch = [[Epoch (astronomy)#Julian years and J2000|J2000]]
| equinox = J2000
| constell = [[劍魚座]]
| ra = {{RA|05|38|42.40}}<ref name=census/>
| dec = {{dec|-69|06|02.88}}<ref name=census/>
| appmag_v = 12.34<ref name="census">{{cite journal|bibcode=2013A&A...558A.134D|title=The VLT-FLAMES Tarantula Survey. XI. A census of the hot luminous stars and their feedback in 30 Doradus|journal=Astronomy & Astrophysics|volume=558|pages=A134|last1=Doran|first1=E. I.|last2=Crowther|first2=P. A.|last3=De Koter|first3=A.|last4=Evans|first4=C. J.|last5=McEvoy|first5=C.|last6=Walborn|first6=N. R.|last7=Bastian|first7=N.|last8=Bestenlehner|first8=J. M.|last9=Gräfener|first9=G.|last10=Herrero|first10=A.|last11=Köhler|first11=K.|last12=Maíz Apellániz|first12=J.|last13=Najarro|first13=F.|last14=Puls|first14=J.|last15=Sana|first15=H.|last16=Schneider|first16=F. R. N.|last17=Taylor|first17=W. D.|last18=Van Loon|first18=J. Th.|last19=Vink|first19=J. S.|year=2013|doi=10.1051/0004-6361/201321824|arxiv = 1308.3412 |s2cid=118510909}}</ref>
}}
{{Starbox character
| type = [[Wolf-Rayet star]]
| class = WN5h<ref name=schnurr>{{cite journal|bibcode=2009MNRAS.397.2049S|title=VLT/SINFONI time-resolved spectroscopy of the central, luminous, H-rich WN stars of R136|journal=Monthly Notices of the Royal Astronomical Society|volume=397|issue=4|pages=2049|last1=Schnurr|first1=O.|last2=Chené|first2=A.-N.|last3=Casoli|first3=J.|last4=Moffat|first4=A. F. J.|last5=St-Louis|first5=N.|year=2009|doi=10.1111/j.1365-2966.2009.15060.x|doi-access=free |arxiv = 0905.2934 |s2cid=11425847}}</ref>
| b-v=0.23<ref name="census"/>
}}
{{Starbox astrometry
| dist_ly = 163,000
| dist_pc = 50,000<ref name=distance/>
| absmag_v = -7.80<ref name=bestenlehner2020>{{cite journal |bibcode=2020MNRAS.499.1918B |title=The R136 star cluster dissected with Hubble Space Telescope/STIS. II. Physical properties of the most massive stars in R136 |last1=Bestenlehner |first1=Joachim M. |last2=Crowther |first2=Paul A. |last3=Caballero-Nieves |first3=Saida M. |last4=Schneider |first4=Fabian R. N. |last5=Simón-Díaz |first5=Sergio |last6=Brands |first6=Sarah A. |last7=De Koter |first7=Alex |last8=Gräfener |first8=Götz |last9=Herrero |first9=Artemio |last10=Langer |first10=Norbert |last11=Lennon |first11=Daniel J. |last12=Maíz Apellániz |first12=Jesus |last13=Puls |first13=Joachim |last14=Vink |first14=Jorick S. |journal=Monthly Notices of the Royal Astronomical Society |year=2020 |volume=499 |issue=2 |page=1918 |doi=10.1093/mnras/staa2801 |doi-access=free |arxiv=2009.05136 }}</ref>
| absmag_bol = -12.0<ref name=hainich>{{cite journal|doi=10.1051/0004-6361/201322696|title=The Wolf-Rayet stars in the Large Magellanic Cloud|journal=Astronomy & Astrophysics|volume=565|pages=A27|year=2014|last1=Hainich|first1=R.|last2=Rühling|first2=U.|last3=Todt|first3=H.|last4=Oskinova|first4=L. M.|last5=Liermann|first5=A.|last6=Gräfener|first6=G.|last7=Foellmi|first7=C.|last8=Schnurr|first8=O.|last9=Hamann|first9=W.-R.|bibcode=2014A&A...565A..27H|arxiv = 1401.5474 |s2cid=55123954}}</ref>
}}
{{Starbox detail
| source = <ref name=Brands2022>{{Cite journal |last1=Brands |first1=S. |last2=de Koter |first2=A. |last3=Bestenlehner |first3=J. |last4=Crowther |first4=P. |last5=Sundqvist |first5=J. |last6=Puls |first6=J. |last7=Caballero-Nieves |first7=S. |last8=Abdul-Masih |first8=M. |last9=Driessen |first9=F. |last10=Garcia |first10=M. |last11=Geen |first11=S. |last12=Gräfener |first12=G. |last13=Hawcroft |first13=C. |last14=Kaper |first14=L. |last15=Keszthelyi |first15=Z. |last16=Langer |first16=N. |last17=Sana |first17=H. |last18=Schneider |first18=Fabian R. N. |last19=Shenar |first19=T. |last20=Vink |first20=Jorick S. |date=7 April 2022 |title=The R136 star cluster dissected with Hubble Space Telescope/STIS. III. The most massive stars and their clumped winds |url=https://www.aanda.org/10.1051/0004-6361/202142742 |journal=Astronomy & Astrophysics |volume=663 |pages=A36 |arxiv=2202.11080 |bibcode= 2022A&A...663A..36B|doi=10.1051/0004-6361/202142742 |issn=0004-6361|s2cid=247025548}}</ref><ref>{{Cite journal|last1=Kalari |first1=Venu M. |last2=Horch |first2=Elliott P. |last3=Salinas |first3=Ricardo |last4=Vink |first4=Jorick S. |last5=Andersen |first5=Morten |last6=Bestenlehner |first6=Joachim M. |last7=Rubio |first7=Monica |date=2022-07-26 |title=Resolving the Core of R136 in the Optical |journal=The Astrophysical Journal |volume=935 |issue=2 |page=162 |doi=10.3847/1538-4357/ac8424 |arxiv=2207.13078|bibcode=2022ApJ...935..162K |s2cid=251067072 |doi-access=free }}</ref>
| mass = {{val|151|27|16}}
| radius = {{val|25.2|4.1|3.5|fmt=commas}}
| luminosity = 3,548,000
| temperature = 50,000
| age_myr = {{val|1.34|0.13|0.18}}
| metal =
| rotational_velocity = 150
}}
{{Starbox catalog
| names = [[NGC 2070|MH]] 511, [[Radcliffe Observatory|RMC]] 136a2, HSH95 5, [[BAT99]] 109, CHH92 2
}}
{{Starbox reference
| Simbad = RMC+136a2
}}
{{Starbox end}}
'''R136a2'''是一顆[[沃爾夫-拉葉星]]，位於[[R136]]中心附近，R136是[[蜘蛛星雲]]中[[疏散星團]][[NGC 2070]]的中心恆星聚集區，而蜘蛛星雲是[[大麥哲倫星雲]]中一個巨大的H II區域，大麥哲倫星雲是[[銀河系]]附近的[[衛星星系]]。

R136a2是已知恆星中已確認質量和光度最高的恆星之一，分別約為{{Solar mass|151|link=y}}和350萬{{Solar luminosity|link=y}}。

==距離==
由於多種因素，確定R136a2精確距離具有挑戰性。由於距離大麥哲倫星雲非常遙遠，已經超越了[[視差法]]技術的極限。大多數估計認為 R136與大麥哲倫星雲的距離相同。透過比較食雙星的角度和線性尺寸，可以得出大麥哲倫星雲最精確距離為49.97kpc<ref name=distance>{{cite journal|bibcode=2013Natur.495...76P|title=An eclipsing-binary distance to the Large Magellanic Cloud accurate to two per cent|url=https://archive.org/details/sim_nature-uk_2013-03-07_495_7439/page/76|journal=Nature|volume=495|issue=7439|pages=76–9|last1=Pietrzyński|first1=G.|last2=Graczyk|first2=D.|last3=Gieren|first3=W.|last4=Thompson|first4=I. B.|last5=Pilecki|first5=B.|last6=Udalski|first6=A.|last7=Soszyński|first7=I.|last8=Kozłowski|first8=S.|last9=Konorski|first9=P.|last10=Suchomska|first10=K.|last11=Bono|first11=G.|last12=Moroni|first12=P. G. Prada|last13=Villanova|first13=S.|last14=Nardetto|first14=N.|last15=Bresolin|first15=F.|last16=Kudritzki|first16=R. P.|last17=Storm|first17=J.|last18=Gallenne|first18=A.|last19=Smolec|first19=R.|last20=Minniti|first20=D.|last21=Kubiak|first21=M.|last22=Szymański|first22=M. K.|last23=Poleski|first23=R.|last24=Wyrzykowski|first24=Ł.|last25=Ulaczyk|first25=K.|last26=Pietrukowicz|first26=P.|last27=Górski|first27=M.|last28=Karczmarek|first28=P.|year=2013|doi=10.1038/nature11878|pmid=23467166|arxiv = 1303.2063 |s2cid=4417699}}</ref>。

==參考資料==
{{reflist}}

==外部連結==
* http://www.eso.org/public/news/eso1030/

[[Category:沃爾夫-拉葉星]]

R136a2 - 版本历史

imported>InternetArchiveBot：​Add 1 book for verifiability (20251017sim)) #IABot (v2.0.9.5) (GreenC bot

imported>InternetArchiveBot：Add 1 book for verifiability (20251017sim)) #IABot (v2.0.9.5) (GreenC bot