黑暗光环浅滩上的灯塔
Galaxies: Lighthouses in the Shoals of Dark Halos
摘要：
从层次聚类理论可以预测，在很宽的质量范围内，晕之间存在标度关系。从观察上看，由于可见探针的数量很少以及投影中污染物的混淆，很难识别表征这些关系的标记。尽管如此，在有利的情况下，可以确定一个非常有用的标记：第二次转弯时的焦散线半径。在一些有利的情况下，有可能确定第一个转弯的半径，或围绕塌陷区域的零速度表面。具体地说，第二次转向的半径与预期的一样，在质量从10^12到10^15太阳质量的三个数量级上变化。晕的特征在于第二转向焦散线内的分散速度区和第一和第二转向半径之间的落入区。内区主要由贫气体形态填充，外区主要由富气体形态填充。内带中的矮星数量在每单位晕质量上大致是恒定的。
英文摘要：
It is anticipated from hierarchical clustering theory that there are scaling relationships between halos over a wide range of mass. Observationally it can be difficult to identify the markers that characterize these relationships because of the small numbers of visible probes and confusion from contaminants in projection. Nonetheless, in favorable circumstances it is possible to identify a very useful marker: the radius of the caustic at second turnaround. In a few favorable circumstances it is possible to identify the radius of first turnaround, or zero velocity surface about a collapsed region. It will be shown that specifically the radius of second turnaround scales as anticipated over three orders of magnitude in mass from 10^12 to 10^15 M_sun. Halos are characterized by zones of dispersed velocities within the second turnaround caustic and zones of infall between the first and second turnaround radii. The inner zone is populated in the majority by gas poor morphologies and the outer zone is populated in the majority by gas rich morphologies. The numbers of dwarfs within the inner zone is roughly constant per unit halo mass.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
