2MASS 1507-1627
2MASS J15074769−1627386 (也缩写为 2MASS 1507−1627) 是位于天秤座的一颗棕矮星，距离地球约24.1光年。属于光谱等级L5；它的表面温度为1,300至2,000K。与其他L型棕矮星一样，它的光谱主要由金属氢化物和碱金属组成。其光谱还具有较弱的硅酸盐吸收带和高度变化的水吸收带，表明具有复杂的云雾结构。[4]
| 观测资料 历元 J2000 | |
|---|---|
| 星座 | 天秤座 |
| 星官 | |
| 赤经 | 15h 07m 47.69s |
| 赤纬 | −16° 27′ 38.6″ |
| 视星等（V） | 22.136 |
| 特性 | |
| 演化阶段 | brown dwarf |
| 光谱分类 | L5 |
| 视星等 (R) | 18.928+0.097 − |
| 视星等 (J) | 12.830 ± 0.027 |
| 视星等 (H) | 11.895 ± 0.024 |
| 视星等 (K) | 11.312 ± 0.026 |
| 天体测定 | |
| 径向速度 (Rv) | -39.85[1] km/s |
| 自行 (μ) | 赤经：-151.645[1] mas/yr 赤纬：-895.714[1] mas/yr |
| 视差 (π) | 134.9474 ± 0.2611[2] mas |
| 距离 | 24.17 ± 0.05 ly (7.41 ± 0.01 pc) |
| 详细资料 [3] | |
| 半径 | 0.08 R☉ |
| 表面重力 (log g) | 5.5 |
| 温度 | 1600 K |
| 其他命名 | |
2MASS J15074769-1627386, 2MASSW J1507476162738, 2MUCD 11296, 2MASSI J1507476−162738, Gaia DR2 6306068659857135232
| |
| 参考数据库 | |
| SIMBAD | 资料 |
这颗棕矮星被怀疑有一个轨道周期超过10年的宽轨道上的亚星伴星（行星）。[5]
参考
- ^ 1.0 1.1 1.2 2MASSW J1507476-162738. SIMBAD. 斯特拉斯堡天文资料中心.
- ^ Brown, A. G. A.; et al. Gaia Early Data Release 3: Summary of the contents and survey properties. Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533
. doi:10.1051/0004-6361/202039657 . 已忽略未知参数|collaboration=(帮助) (勘误: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR. - ^ Stephens, D. C.; Leggett, S. K.; Cushing, Michael C.; Marley, Mark S.; Saumon, D.; Geballe, T. R.; Golimowski, David A.; Fan, Xiaohui; Noll, K. S., The 0.8–14.5 μm Spectra of Mid-L to Mid-T Dwarfs: Diagnostics of Effective Temperature, Grain Sedimentation, Gas Transport, and Surface Gravity, The Astrophysical Journal, 2009, 702 (1): 154–170, Bibcode:2009ApJ...702..154S, S2CID 118650774, arXiv:0906.2991 , doi:10.1088/0004-637X/702/1/154
- ^ Yang, Hao; Apai, Dániel; Marley, Mark S.; Saumon, Didier; Morley, Caroline V.; Buenzli, Esther; Artigau, Étienne; Radigan, Jacqueline; Metchev, Stanimir; Burgasser, Adam J.; Mohanty, Subhanjoy; Lowrance, Patrick J.; Showman, Adam P.; Karalidi, Theodora; Flateau, Davin; Heinze, Aren N., HST Rotational Spectral Mapping of Two L-Type Brown Dwarfs: Variability in and Out of Water Bands Indicates High-Altitude Haze Layers, The Astrophysical Journal, 2014, 798: L13, S2CID 26179429, arXiv:1411.2911 , doi:10.1088/2041-8205/798/1/L13
- ^ Prato, L.; Mace, G. N.; Rice, E. L.; McLean, I. S.; Kirkpatrick, J. Davy; Burgasser, Adam J.; Kim, Sungsoo S., Radial velocity variability of field brown dwarfs, The Astrophysical Journal, 2015, 808 (1): 12, Bibcode:2015ApJ...808...12P, S2CID 26692089, arXiv:1506.02771 , doi:10.1088/0004-637X/808/1/12
外部链接
- Entry at DwarfArchives.org 互联网档案馆的存档，存档日期2019-06-10.