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HV 2112

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HV 2112
HV-2112
HV 2112 (红圈)
观测资料
历元 J2000.0
星座 杜鹃座[1]
星官
赤经 01h 10m 03.858s[2]
赤纬 −72° 36′ 52.62″[2]
视星等(V) 12.7 to below 16.7[3][4]
特性
演化阶段AGB[5]
光谱分类M5.5 II (M3e – M7.5[6])
视星等 (J)10.020[2]
视星等 (H)9.100[2]
视星等 (K)8.723[2]
U−B 色指数+0.33[7]
B−V 色指数+1.80[7]
变星类型Mira?[8]
天体测定
径向速度 (Rv)157[9] km/s
自行 (μ) 赤经:+1.038[10] mas/yr
赤纬:−1.274[10] mas/yr
视差 (π)0.0164 ± 0.0246[10] mas
距离approx. 200,000 ly
(approx. 60,000 pc)
绝对星等 (MV)−5.2[9]
详细资料
质量~5[5] M
半径675 - 1,193[5][a] R
表面重力 (log g)0.0[9]
亮度50,100 - 81,300[5] L
温度2,500 - 3,750[5] K
金属量 [Fe/H]−2.18[11] dex
其他命名
HV 2112, 2MASS J01100385-7236526, SMC V2156,[8] PMMR 187[12]
参考资料库
SIMBAD资料

HV 2112是一颗位于小麦哲伦星系红超巨星。该恒星被认为是可能性极高的索恩-祖特阔夫天体候选者。

概要

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天文学家于2014年以位于智利麦哲伦望远镜中的克莱望远镜确认了HV 2112的存在[13]。该恒星的元素丰度异常地高[13]。天文学家艾蜜莉·李维斯克英语Emily Levesque(Emily Levesque)使用阿帕契点天文台的望远镜分析银河系中的24颗红超巨星,以及利用克莱望远镜观测分别观测大麦哲伦星系16颗和小麦哲伦星系24颗红超巨星,发现了HV 2112这个索恩-祖特阔夫天体候选者[14]

参考资料

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  1. ^ Roman, Nancy G. Identification of a constellation from a position. Publications of the Astronomical Society of the Pacific. 1987, 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034可免费查阅.  无效|mode=脚本错误:没有“Citation mode”这个模块。 (帮助) Constellation record for this object at VizieR.
  2. ^ 2.0 2.1 2.2 2.3 2.4 Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). CDS/ADC Collection of Electronic Catalogues. 2003, 2246: II/246. Bibcode:2003yCat.2246....0C. 
  3. ^ Kochanek, C. S.; Shappee, B. J.; Stanek, K. Z.; Holoien, T. W.-S.; Thompson, Todd A.; Prieto, J.-L.; Dong, Subo; Shields, J. V.; Will, D.; et al. The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0. Publications of the Astronomical Society of the Pacific. 2017, 129 (980): 104502. Bibcode:2017PASP..129j4502K. S2CID 118995322. arXiv:1706.07060可免费查阅. doi:10.1088/1538-3873/aa80d9. 
  4. ^ Shappee, B. J.; Prieto, J. L.; Grupe, D.; Kochanek, C. S.; Stanek, K. Z.; De Rosa, G.; Mathur, S.; Zu, Y.; Peterson, B. M.; et al. The Man behind the Curtain: X-Rays Drive the UV through NIR Variability in the 2013 Active Galactic Nucleus Outburst in NGC 2617. The Astrophysical Journal. 2014, 788 (1): 48. Bibcode:2014ApJ...788...48S. S2CID 119113433. arXiv:1310.2241可免费查阅. doi:10.1088/0004-637X/788/1/48. 
  5. ^ 5.0 5.1 5.2 5.3 5.4 Beasor, Emma; Davies, Ben; Cabrera-Ziri, Ivan; Hurst, Georgia. A critical re-evaluation of the Thorne-Żytkow object candidate HV 2112. Monthly Notices of the Royal Astronomical Society. 2 July 2018, 479 (3): 3101. Bibcode:2018MNRAS.479.3101B. S2CID 67766043. arXiv:1806.07399可免费查阅. doi:10.1093/mnras/sty1744可免费查阅. 
  6. ^ Wood, P. R.; Bessell, M. S.; Fox, M. W. Long-period variables in the Magellanic Clouds – Supergiants, AGB stars, supernova precursors, planetary nebula precursors, and enrichment of the interstellar medium. Astrophysical Journal. 1983, 272: 99. Bibcode:1983ApJ...272...99W. doi:10.1086/161265可免费查阅. 
  7. ^ 7.0 7.1 Boyer, Martha L.; Srinivasan, Sundar; Van Loon, Jacco Th.; McDonald, Iain; Meixner, Margaret; Zaritsky, Dennis; Gordon, Karl D.; Kemper, F.; Babler, Brian; et al. Surveying the Agents of Galaxy Evolution in the Tidally Stripped, Low Metallicity Small Magellanic Cloud (SAGE-SMC). II. Cool Evolved Stars. The Astronomical Journal. 2011, 142 (4): 103. Bibcode:2011AJ....142..103B. S2CID 119268816. arXiv:1106.5026可免费查阅. doi:10.1088/0004-6256/142/4/103. 
  8. ^ 8.0 8.1 Samus, N. N.; Durlevich, O. V.; et al. VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007–2013). VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 2009, 1. Bibcode:2009yCat....102025S. 
  9. ^ 9.0 9.1 9.2 Levesque, Emily. Discovery of a Thorne-̇Żytkow object candidate in the Small Magellanic Cloud. Monthly Notices of the Royal Astronomical Society: Letters. 1 September 2014, 443: L94–L98. Bibcode:2014MNRAS.443L..94L. S2CID 119192926. arXiv:1406.0001可免费查阅. doi:10.1093/mnrasl/slu080可免费查阅. 
  10. ^ 10.0 10.1 10.2 Vallenari, A.; et al. Gaia Data Release 3. Summary of the content and survey properties. Astronomy & Astrophysics. 2022. arXiv:2208.00211可免费查阅. doi:10.1051/0004-6361/202243940可免费查阅.  已忽略未知参数|collaboration= (帮助) Gaia DR3 record for this source at VizieR.
  11. ^ Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevič, G.; Monari, G.; Cantat-Gaudin, T.; Weiler, M.; Khan, S.; Miglio, A.; Carrillo, I.; Romero-Gómez, M.; Minchev, I.; De Jong, R. S.; Antoja, T.; Ramos, P.; Steinmetz, M.; Enke, H. Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18. Astronomy and Astrophysics. 2019, 628: A94. Bibcode:2019A&A...628A..94A. S2CID 131780028. arXiv:1904.11302可免费查阅. doi:10.1051/0004-6361/201935765. 
  12. ^ HV 2112. SIMBAD. 斯特拉斯堡天文资料中心. [2021-05-05]. 
  13. ^ 13.0 13.1 Eller, Cynthia. Kip Thorne discusses first discovery of Thorne-Zytkow object. 30 June 2014 [30 June 2014]. (原始内容存档于2014-07-06). 
  14. ^ First Thorne-Zytkow Object Found 200,000 Light-Years Away. 5 June 2014 [30 June 2014]. (原始内容存档于2014-07-01). 

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备注

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  1. ^ 根据有效温度和光度数据计算得出,参考标准太阳温度为5,772 K: