论文标题
了解基本平面和塔利·费舍尔的关系
Understanding the Fundamental Plane and the Tully Fisher Relation
论文作者
论文摘要
早期类型的星系尺寸，表面亮度和速度分散剂“基本平面”之间的关系长期以来一直被理解为由于其在很大程度上受到压力支持的恒星动力学的平衡而产生的。通过在宇宙时间合并这些星系的合并形成，涉及达到这种均衡的耗散和反馈可能是平面的导致平面的方向。在6DF Galaxy调查中，我们看到表面亮度增强与青年之间的相关性。现在，这种“倾斜”与恒星质量，年龄，浓度，形状和金属性的相关性指出了在这些附近星系的解决运动学和结构上进一步工作的方向，以及其最初的质量功能和暗物质成分。 从表面上看，塔利·费舍尔的关系是一个更简单的一维缩放关系。但是，由于晚期类型的星系具有凸起和磁盘，并且由于磁盘的表面密度仅是较大星系的标准标准，因此涉及其他参数。
The relation between early type galaxy size, surface brightness and velocity dispersion, "the fundamental plane", has long been understood as resulting from equilibrium in their largely pressure supported stellar dynamics. The dissipation and feedback involved in reaching such an equilibrium through merger formation of these galaxies over cosmic time can be responsible for the orientation of the plane. We see a correlation between surface brightness enhancement and youth in the 6dF Galaxy Survey. Correlations of this `tilt' with stellar mass, age, concentration, shape and metallicity now point the direction for further work on the resolved kinematics and structure of these nearby galaxies and on their initial mass function and dark matter component. On the face of it, the Tully Fisher relation is a simpler one dimensional scaling relation. However, as late type galaxies have bulges as well as disks, and, as the surface density of disks is only standard for the more massive galaxies, additional parameters are involved.
