标题： 中等红移早型星系的二次吸积模型和暗物质标度关系 显示英文标题

标题： Secondary infall model and dark matter scaling relations in intermediate redshift early - type galaxies

摘要： 暗物质（DM）和恒星量之间的尺度关系是约束形成情景和星系结构演化的有用工具。 然而，大多数DM的性质实际上并不是直接测量的，而是通过依赖模型的质量映射过程推导出来的。 因此，采用理论和观测上都建立良好的模型至关重要。 我们在这里使用了更新版本的次级吸积模型（SIM）来预测晕密度剖面，考虑了角动量、耗散摩擦和重子塌缩的影响。 由此产生的晕剖面家族仅依赖于一个参数，即virial质量，并且很好地拟合了中等红移透镜星系样本的投影质量和孔径速度弥散。 我们推导了与DM相关的量（即柱密度和牛顿加速度），并研究了它们与恒星质量、光度、有效半径和virial质量的相关性。 显示英文摘要

摘要： Scaling relations among dark matter (DM) and stellar quantities are a valuable tool to constrain formation scenarios and the evolution of galactic structures. However, most of the DM properties are actually not directly measured, but derived through model dependent mass mapping procedures. It is therefore crucial to adopt theoretically and observationally well founded models. We use here an updated version of the secondary infall model (SIM) to predict the halo density profile, taking into account the effects of angular momentum, dissipative friction and baryons collapse. The resulting family of halo profiles depends on one parameter only, the virial mass, and nicely fits the projected mass and aperture velocity dispersion of a sample of intermediate redshift lens galaxies. We derive DM related quantities (namely the column density and the Newtonian acceleration) and investigate their correlations with stellar mass, luminosity, effective radius and virial mass.