WR 136

WR 136是位於天鵝座的一顆沃爾夫-拉葉星。它位於眉月星雲的中心。據估計，它的年齡約為470萬年，已經接近生命的盡頭。預計在幾十萬年內，它將爆炸成為超新星。 根據最近的估計，WR 136比太陽亮60萬倍，質量大21倍，直徑大5.1倍。它的表面溫度約為70,000k。 WR 136在大約120,000–240,000年前成為紅超巨星時，吹掉了一個質量約為5 M☉的物質外殼，並且仍在以80公里/秒的速度膨脹。現時，它的快速恆星風以約380萬英里/小時（1700公里/秒）的速度從恆星噴出，正在追趕早先從恆星噴出的物質，並將其塑造成一個外殼。從WR 136炙熱表面發射的紫外線使外殼發光。 有一些證據表明WR 136可能是一對聯星。它的伴星是一顆恆星分類K或M的低質量恆星，每5.13天繞沃夫-瑞葉星一周，是低質量X射線聯星系統的前身。 MAST: Barbara A. Mikulski Archive for Space Telescopes. Space Telescope Science Institute. [8 December 2021]. （原始内容存档于2023-03-27）.  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.  Ducati, J. R. VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system. CDS/ADC Collection of Electronic Catalogues. 2002, 2237: 0. Bibcode:2002yCat.2237....0D.  Sota, A.; Maíz Apellániz, J.; Morrell, N. I.; Barbá, R. H.; Walborn, N. R.; Gamen, R. C.; Arias, J. I.; Alfaro, E. J.; Oskinova, L. M. The Galactic WN stars revisited. Impact of Gaia distances on fundamental stellar parameters. Astronomy & Astrophysics. 2019, A57: 625. Bibcode:2019A&A...625A..57H. S2CID 104292503. arXiv:1904.04687 . doi:10.1051/0004-6361/201834850.  Barbier-Brossat, M.; Petit, M.; Figon, P. Third bibliographic catalogue of stellar radial velocities (Text in French). Astronomy and Astrophysics Supplement Series. 1994, 108: 603. Bibcode:1994A&AS..108..603B.  Brown, A. G. A.; Vallenari, A.; Prusti, T.; de Bruijne, J. H. J.; et al. Gaia Data Release 2. Summary of the contents and survey properties. Astronomy & Astrophysics. 2018. Bibcode:2018A&A...616A...1G. arXiv:1804.09365 . doi:10.1051/0004-6361/201833051.  VizieR中此天体在盖亚望远镜第二批数据发布的记录 Gräfener, G.; Vink, J. S.; Harries, T. J.; Langer, N. Rotating Wolf-Rayet stars in a post RSG/LBV phase. Astronomy & Astrophysics. 2012, 547: A83. Bibcode:2012A&A...547A..83G. S2CID 55530420. arXiv:1210.1153 . doi:10.1051/0004-6361/201118664.  Moore, Brian D.; Hester, J. Jeff; Scowen, Paul A. Hubble Space Telescope Observations of the Wolf-Rayet Nebula NGC 6888. The Astronomical Journal. 2000, 119 (6): 2991. Bibcode:2000AJ....119.2991M. S2CID 17769849. arXiv:astro-ph/0003053 . doi:10.1086/301389.  Mesa-Delgado, A.; Esteban, C.; García-Rojas, J.; Reyes-Pérez, J.; Morisset, C.; Bresolin, F. The Trace of the CNO Cycle in the Ring Nebula NGC 6888. The Astrophysical Journal. 2014, 785 (2): 100. Bibcode:2014ApJ...785..100M. S2CID 118596124. arXiv:1402.6181 . doi:10.1088/0004-637X/785/2/100.  Hamann, W.-R.; Wessolowski, U.; Koesterke, L. Non-LTE spectral analyses of Wolf-Rayet stars: The nitrogen spectrum of the WN6 prototype HD 192163 (WR136). Astronomy and Astrophysics. 1994, 281: 184. Bibcode:1994A&A...281..184H. ISSN 0004-6361.  Rustamov, D. N.; Cherepashchuk, A. M. The Wolf-Rayet star HD 192163 as a possible evolutionary progenitor of a low-mass X-ray binary. Astronomy Reports. 2011, 55 (4): 347–358 [17 July 2013]. Bibcode:2011ARep...55..347R. S2CID 121379439. doi:10.1134/S1063772911010069. （原始内容存档于2019-07-22）.  Bychkov, K. V.; Sitnik, T. G. Stratification of optical emission from NGC 6888 as a trace of the interaction between Wolf-Rayet stellar wind and the shell of a red supergiant. Astronomy Letters. 2006, 32 (6): 406. Bibcode:2006AstL...32..406B. S2CID 123039046. doi:10.1134/S1063773706060041.  http://chandra.harvard.edu/photo/2003/ngc6888/ （页面存档备份，存于互联网档案馆） http://www.giga-parsec.de/WRspectra.html （页面存档备份，存于互联网档案馆） http://www.castfvg.it/stelle/spettri/O/wr_136_01.htm （页面存档备份，存于互联网档案馆）