论文标题
星系特性如何影响空隙统计？
How do galaxy properties affect void statistics?
论文作者
论文摘要
使用基于流体动力学模拟的从暗物质光环到星系性能的映射，我们探讨了星系性能对空隙尺寸函数和空隙 - 摩轴相关函数的影响。我们在Massivenus Halos上复制了来自Illustris的星系的性质，以在Massivenus Halos上执行亮度和恒星形成速率。我们比较了此类削减对空白质量的voids性能的影响（通常是在N-Body模拟驱动的光环目录上执行的）。我们发现，由亮度选择的星系和光晕构建的空隙目录在误差中是一致的，而根据所选星系的恒星形成速率构建的空隙目录与halos构建的空隙目录不同。我们研究了这种差异的原因。我们的工作表明，可以通过在暗物质模拟中使用光晕来可靠地研究基于星系目录（通过亮度切割选择）的空隙。
Using a mapping from dark matter halos to galaxy properties based on hydrodynamical simulations, we explore the impact of galaxy properties on the void size function and the void-galaxy correlation function. We replicate the properties of galaxies from Illustris on MassiveNus halos, to perform both luminosity and star formation rate cuts on MassiveNus halos. We compare the impact of such cuts on voids properties with respect to cuts on halo mass (as usually performed on halo catalogs driven from N-body simulations). We find that void catalogs built from luminosity-selected galaxies and halos are consistent within errors, while void catalogs built from star formation rate selected galaxies differ from void catalogs built on halos. We investigate the reason for this difference. Our work suggests that voids built on galaxy catalogs (selected through luminosity cut) can be reliably studied by using halos in dark matter simulations.
