Abstract—We analyze the spatial and kinematic properties of a large sample of young T Tauri type stars in a 500 pc radius solar neighborhood, closely related to the Gould belt. The following parameters of the exponential density distribution have been determined: the average \({{({{z}_{{\text{G}}}})}_{ \odot }} = - 25 \pm 5\) pc and scale height \({{h}_{{\text{G}}}} = 56 \pm 6\) pc. We propose a method of excluding background stars from the samples, which are located at large heights with respect to the symmetry plane of the Gould belt. We discovered that the expansion effect for the entire star system, K_G = 6 ± 1 km s⁻¹ kpc⁻¹, is determined mainly by the dynamics of the Scorpius–Centaurus association. We show that the angular velocity of the residual intrinsic rotation of the Gould belt can reach Ω_G = 6.9 ± 0.2 km s⁻¹ kpc⁻¹ and that this rotation is opposite to the galactic rotation.

摘要—我们分析了一个与古尔德带密切相关的，半径为500 pc的太阳邻区中大量T Tauri型年轻T型恒星的空间和运动学性质。确定了指数密度分布的以下参数：平均值\（{{{{{{z} _ {{\ text {G}}}}}} _ {\ odot}} =-25 \ pm 5 \） pc和标尺高度\（{{h} _ {{\ text {G}}}} = 56 \ pm 6 \） pc。我们提出了一种从样本中排除背景恒星的方法，这些样本相对于古尔德带的对称平面位于较高的高度。我们发现整个星系的膨胀效应K _G = 6±1 km s ^-1 kpc ^-1，主要由Scorpius-Centaurus协会的动力学决定。我们表明，古尔德带的残留固有旋转角速度可以达到Ω _ģ = 6 。9±0 。2 km s ^-1 kpc ^-1，并且该旋转与银河系旋转相反。