2MASS J00361617+1821104

2MASS J00361617+1821104 (简写为 2MASS 0036+1821) 是一颗位于双鱼座棕矮星,距离地球28.4光年[3]

2MASS J00361617+1821104
观测资料
历元 J2000
星座 双鱼座
星官
赤经 00h 36m 16.17s
赤纬 18° 21′ 10.4″
视星等(V)
特性
光谱分类L3.5
视星等 (J)12.466 ± 0.027
视星等 (H)11.588 ± 0.029
视星等 (K)11.058 ± 0.021
天体测定
径向速度 (Rv)19.02 km/s
自行 (μ) 赤经:901.558 mas/yr
赤纬:124.019 mas/yr
视差 (π)114.4167 ± 0.2088[1] mas
距离28.51 ± 0.05 ly
(8.74 ± 0.02 pc)
详细资料
温度1300–2000 K
自转3.08+0.05
h[2]
其他命名
2MASS J00361617+1821104;2MASSW J0036159+182110, LSPM J0036+1821, Gaia DR2 2794735086363871360
参考数据库
SIMBAD资料

2MASS 0036+1821的光谱类型为L3.5,表面温度为1300-2000K。与其他L 型棕矮星一样,它的光谱主要是金属氢化物和碱金属。由于自行运动,它的位置每年移动0.9071角秒。

2MASS 0036+1821的表面完全被云层覆盖,尽管云层看起来很薄(小于十个光学深度)[2],由于异常快速的旋转,它在光球层级拥有超过1000 G的强磁场[4],并以其无线电发射而闻名[5]

参见

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外部链接

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参考资料

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  1. ^ 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
  2. ^ 2.0 2.1 Sanghavi, Suniti; Shporer, Avi, Photopolarimetric Characteristics of Brown Dwarfs. I. Uniform Cloud Decks, The Astrophysical Journal, 2018, 866 (1): 28, Bibcode:2018ApJ...866...28S, S2CID 55544773, arXiv:1705.05041 , doi:10.3847/1538-4357/aadf94 
  3. ^ Riedel, Adric R.; Ditomasso, Victoria; Rice, Emily L.; Alam, Munazza K.; Abrahams, Ellianna; Crook, James; Cruz, Kelle L.; Faherty, Jacqueline K., Radial Velocities, Space Motions, and Nearby Young Moving Group Memberships of Eleven Candidate Young Brown Dwarfs, The Astronomical Journal, 2019, 157 (6): 247, Bibcode:2019AJ....157..247R, S2CID 129945848, arXiv:1904.10579 , doi:10.3847/1538-3881/ab1915 
  4. ^ Guenther, E. W.; Zapatero-Osorio, María Rosa; Mehner, A.; Martín, Eduardo L., Short-term spectroscopic monitoring of two cool dwarfs with strong magnetic fields, Astronomy & Astrophysics, 2009, 498 (1): 281–287, Bibcode:2009A&A...498..281G, S2CID 18611224, arXiv:0903.2340 , doi:10.1051/0004-6361/200810216 
  5. ^ Zic, Andrew; Lynch, Christene; Murphy, Tara; Kaplan, David L.; Chandra, Poonam, Low-frequency GMRT observations of ultra-cool dwarfs, Monthly Notices of the Royal Astronomical Society, February 2019, 483 (1): 614–623, arXiv:1811.09294 , doi:10.1093/mnras/sty3163