标题： 北半球最亮的T矮星的发现 显示英文标题

标题： Discovery of the brightest T dwarf in the northern hemisphere

摘要： 我们报告发现了一个明亮（H=12.77）的棕矮星，指定为SIMP J013656.5+093347。 该发现是作为近红外自行调查的一部分，SIMP（Sondage Infrarouge de Mouvement Propre），该调查使用自行和近红外/光学测光来识别棕矮星候选体。 呈现了一种低分辨率（lambda/dlambda~40）的光谱，覆盖0.88-2.35微米波长区间。 光谱分析表明其光谱类型为T2.5+/-0.5。 假设它是一个单独的物体，估计光度距离为6.4+/-0.3秒差距。 当前观测排除了质量比约为1且分离度大于5天文单位的双星。 SIMP 0136是北半球最亮的T型棕矮星，整个天空中仅被Eps Indi Bab超越。 因此，它是一个非常适合详细研究的候选体，并应成为早期-T型光谱类别的基准天体。 显示英文摘要

摘要： We report the discovery of a bright (H=12.77) brown dwarf designated SIMP J013656.5+093347. The discovery was made as part of a near-infrared proper motion survey, SIMP (Sondage Infrarouge de Mouvement Propre), which uses proper motion and near-infrared/optical photometry to identify brown dwarf candidates. A low resolution (lambda/dlambda~40) spectrum of this brown dwarf covering the 0.88-2.35 microns wavelength interval is presented. Analysis of the spectrum indicates a spectral type of T2.5+/-0.5. A photometric distance of 6.4+/-0.3 pc is estimated assuming it is a single object. Current observations rule out a binary of mass ratio ~1 and separation >5 AU. SIMP 0136 is the brightest T dwarf in the northern hemisphere and is surpassed only by Eps Indi Bab over the whole sky. It is thus an excellent candidate for detailed studies and should become a benchmark object for the early-T spectral class.