论文标题
测量星系的膨胀或收缩
Measuring the Expansion or Contraction of Galaxies
论文作者
论文摘要
星系由于其发光度或气态流出而失去质量。我计算出恒星向外的径向迁移，并表明它可能在下一代大型望远镜上使用高分辨率光谱仪进行测量。在密集的宇宙环境中的物质大量积聚可能会触发向内的恒星迁移，这将更容易测量。
Galaxies lose mass as a result of their luminosity or gaseous outflows. I calculate the resulting radial migration of stars outwards and show that it could potentially be measured with high resolution spectrographs on the next generation of large telescopes. Substantial accretion of matter in dense cosmic environments could trigger inward stellar migration that would be even more easily measurable.
