2MASS 0415-0935
| 观测资料 历元 J2000 | |
|---|---|
| 星座 | 波江座 |
| 星官 | |
| 赤经 | 04h 15m 19.54s |
| 赤纬 | −09° 35′ 06.6″ |
| 视星等（V） | |
| 特性 | |
| 光谱分类 | T8V |
| 视星等 (J) | 15.695 ± 0.058 |
| 视星等 (H) | 15.537 ± 0.113 |
| 视星等 (K) | 15.429 ± 0.201 |
| 天体测定 | |
| 视差 (π) | 174.34 ± 2.76 mas |
| 距离 | 18.7 ± 0.3 ly (5.74 ± 0.09 pc) |
| 详细资料 | |
| 质量 | 0.03[1] M☉ |
| 温度 | 764 +88/− 71[2] K |
| 其他命名 | |
2MASS 0415-0935;
2MASSI J0415195-093506; 2MASSW J0415195-093506 | |
2MASS J04151954-0935066（编号简写为2MASS 0415-0935）是位于波江座中的一颗棕矮星，距离地球大约18.7光年。它于2002年由亚当·J·布甘森尔（Adam J. Burgasser）等人发现。[3]它的光谱分类属于T8V型，表面温度只有大约600—750 K。和其他光谱分类为T型的棕矮星一样的，它的光谱特征主要是含有的甲烷所造成的。它每年2.2553角秒的自行造成了位置的变化。它的视差为174.34 ± 2.76毫角秒。近星研究会（RECONS）估计这颗棕矮星的质量只有0.03个太阳质量。[1]
参考文献
[编辑]- ^ 1.0 1.1 Research Consortium on Nearby Stars, Georgia State University. The 100 nearest star systems. RECONS. January 1, 2012 [2012-06-11]. （原始内容存档于2007-11-12）.
- ^ Vrba, F. J.; A. A. Henden, C. B. Luginbuhl, H. H. Guetter, J. A. Munn, B. Canzian, A. J. Burgasser, J. Davy Kirkpatrick, X. Fan, T. R. Geballe, D. A. Golimowski, G. R. Knapp, S. K. Leggett, D. P. Schneider, J. Brinkman. Preliminary Parallaxes of 40 L and T Dwarfs from the U.S. Naval Observatory Infrared Astrometry Program. 2004. arXiv:astro-ph/0402272v1
.
- ^ A. J. Burgasser, J. D. Kirkpatrick, M. E. Brown, I. N. Reid, A. Burrows, J. Liebert, K. Matthews, J. E. Gizis, C. C. Dahn, D. G. Monet. The spectra of T dwarfs. I. Near-infrared data and spectral classification. The Astrophysical Journal. 2002, 564 (1): 421–451. Bibcode:2002ApJ...564..421B. arXiv:astro-ph/0108452v1 . doi:10.1086/324033.
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