2MASS J21392676+0220226
外观
2MASS J21392676+0220226,简称为2MASS 2139,是一颗距离地球约33.7光年的褐矮星,位于宝瓶座[1]。该褐矮星由2微米全天巡天计划发现。它的光度变化相当快速且大幅度,8小时内可以变化30%,是至今观测到褐矮星亮度变化最大的幅度。目前尚不清楚造成如此巨大变化的原因,推测可能是表面有巨大的风暴存在[2]。该风暴甚至可能大于木星的大红斑,一般认为天文学家可能是从大气层的洞中观测到了低空的高温云带。
外部链接
[编辑]- Burgasser, Adam J.; Cruz, Kelle L.; Cushing, Michael; Gelino, Christopher R.; Looper, Dagny L.; Faherty, Jacqueline K.; Kirkpatrick, J. Davy; Reid, I. Neill. SpeX Spectroscopy of Unresolved Very Low-Mass Binaries. I. Identification of Seventeen Candidate Binaries Straddling the L Dwarf/T Dwarf Transition. The Astrophysical Journal. 2009, 710 (2): 1142. Bibcode:2010ApJ...710.1142B. arXiv:0912.3808 . doi:10.1088/0004-637X/710/2/1142.
参考资料
[编辑]- ^ Andrew Fazekas. "Colossal Storm May Rage on Jupiter-like 'Failed Star'". (页面存档备份,存于互联网档案馆)
- ^ Dean Praetorius. "Brown Dwarf May Be Host To Massive, Violent Mega Storm". (页面存档备份,存于互联网档案馆) The Huffington Post, 9/13/2011.