VFTS 2432MASS J05380840-6909190)是围绕恒星质量黑洞运行的O7V型主序星恒星[7]。黑洞的质量大约是太阳的9倍,蓝色恒星的质量是太阳的25倍,使恒星体积比黑洞大20万倍。VFTS 243位于距离地球约16万光年的大麦哲伦星云内的蜘蛛星云(NGC 2070)[8][5]。该联星的轨道周期为10.4天[4]

VFTS 243

哈伯太空望远镜拍摄的VFTS 243的彩色照。
观测资料
历元 J2000.0 (ICRS)
星座 剑鱼座
星官
赤经 05h 38m 08.407s[1]
赤纬 -69° 09′ 18.98″[1]
视星等(V) 15.26[2]
特性
演化阶段主序星 + 黑洞
光谱分类O7V(n)((f))[3]
变星类型变星[4]
天体测定
自行 (μ) 赤经:+1.722 mas/yr
赤纬:+0.603 mas/yr
视差 (π)−0.0468 ± 0.0244[1] mas
距离approx. −70,000 ly
(approx. −20,000 pc)
轨道[4]
绕行周期 (P)10.4031日
偏心率 (e)0.017
倾斜角 (i)≥ 40°
半振幅 (K1)
(primary)
81.4 km/s
详细资料 [4]
恒星
质量25 M
半径10.3 R
表面重力 (log g)3.7
亮度158,000 L
温度36,000 K
自转速度 (v sin i)181 km/s
年龄7.4 Myr
黑洞
质量10.1 M
其他命名
2MASS J05380840-6909190[5]
参考资料库
SIMBAD资料
艺术家对VFTS 243的印象[6]

参考资料

编辑
  1. ^ 1.0 1.1 1.2 Vallenari, A.; et al. Gaia Data Release 3. Summary of the content and survey properties. Astronomy & Astrophysics. 2022. arXiv:2208.00211 . doi:10.1051/0004-6361/202243940 .  已忽略未知参数|collaboration= (帮助) Gaia DR3 record for this source at VizieR.
  2. ^ Evans, C. J.; Taylor, W. D.; Hénault-Brunet, V.; Sana, H.; De Koter, A.; et al. The VLT-FLAMES Tarantula Survey. I. Introduction and observational overview. Astronomy & Astrophysics. June 2011, 530: A108. Bibcode:2011A&A...530A.108E. S2CID 54501763. arXiv:1103.5386 . doi:10.1051/0004-6361/201116782. 
  3. ^ Walborn, N. R.; Sana, H.; Simón-Díaz, S.; Maíz Apellániz, J.; Taylor, W. D.; Evans, C. J.; Markova, N.; Lennon, D. J.; De Koter, A. The VLT-FLAMES Tarantula Survey. XIV. The O-type stellar content of 30 Doradus. Astronomy and Astrophysics. 2014, 564: A40. Bibcode:2014A&A...564A..40W. S2CID 119302111. arXiv:1402.6969 . doi:10.1051/0004-6361/201323082. 
  4. ^ 4.0 4.1 4.2 4.3 Shenar, Tomer; Sana, Hugues; Mahy, Laurent; El-Badry, Kareem; Marchant, Pablo; Langer, Norbert; Hawcroft, Calum; Fabry, Matthias; Sen, Koushik; Almeida, Leonardo A.; Abdul-Masih, Michael; Bodensteiner, Julia; Crowther, Paul A.; Gieles, Mark; Gromadzki, Mariusz. An X-ray-quiet black hole born with a negligible kick in a massive binary within the Large Magellanic Cloud. Nature Astronomy. 2022-07-18, 6 (9): 1085–1092. Bibcode:2022NatAs...6.1085S. ISSN 2397-3366. S2CID 250626810. arXiv:2207.07675 . doi:10.1038/s41550-022-01730-y (英语). 
  5. ^ 5.0 5.1 VFTS 243. SIMBAD. 斯特拉斯堡天文资料中心. 
  6. ^ 'Black hole police' discover a dormant black hole outside our galaxy. European Southern Observatory. 18 July 2022 [20 September 2022]. 
  7. ^ Stevance, H. F.; Ghodla, S.; Richards, S.; Eldridge, J. J.; Briel, M. M.; Tang, P. VFTS 243 as predicted by the BPASS fiducial models. Monthly Notices of the Royal Astronomical Society. 2023, 520 (3): 4740–4746. arXiv:2208.02258 . doi:10.1093/mnras/stad362 . 
  8. ^ Katie Hunt. 'Black hole police' discover dormant black hole outside our galaxy for first time. CNN. 18 July 2022 [2022-09-13].