论文标题
e-galaxies中速度分散的病毒模型和各向异性
Virial models and Anisotropy of Velocity Dispersion in e-galaxies
论文作者
论文摘要
张量病毒方法用于构建22个扁平椭圆形的详细模型。这些模型与新的观察数据结合在一起：扩展的表面亮度分布，同光的曲线和它们的扭曲，旋转曲线和速度分散曲线。这些模型的一个关键特征是严格考虑星系空间形状（块状球形或三轴椭圆形）对动力学的影响，以及这些系统中内密度层的结构。对于每个星系，发现旋转能与势能的比率。将该比率与观察到的比例进行比较，可以得出结论，这些系统中的大多数不能具有各向同性速度分散量。各向异性参数限于间隔0.0-0.224。发现巨型e-galaxies的外部区域之间发现了相关性。我们的结果与其他研究人员的结果进行了比较。发现对于小快速旋转器，我们的值\ b {eta}与在Atlas项目中获得的值一致。然而，对于巨型电子伴侣，与轴对称果酱模型相比，我们的模型与观测值更好地一致。此外，我们的速度分散各向异性结果与Illustris Project中高分辨率宇宙学模拟的结果令人满意
A tensor virial approach is used to construct detailed models of 22 flattened ellipticals. The models are combined with the new observational data: extended surface brightness distributions, the profiles of isophotes flattening and their twisting, the rotation curves and the velocity dispersion profiles. A key feature of these models is a rigorous consideration of the influence of the spatial shape of galaxies (oblate spheroid or triaxial ellipsoid) on the dynamics, as well as the structure of the internal density layers in these systems. For each galaxy the ratio of the rotational energy to the potential energy was found. Comparing this ratio with the observed it is concluded that the majority of these systems cannot have isotropic velocity dispersion tensors. The anisotropy parameter limited to the interval 0.0-0.224. A correlation was found between and flattening of the outer regions for giant E-galaxies. Our results are compared with the results of other researchers. It was found that for small fast rotators our values \b{eta} are in good agreement with those, obtained in the ATLAS project. However, for giant E-galaxies, our models provide better agreement with observations, than axisymmetric JAM models. In addition, our velocity dispersion anisotropy results are in satisfactory agreement with the results of high resolution cosmological simulations in the Illustris project
