论文标题
大型早期型星系的中央暗物质部分
The central dark matter fraction of massive early-type galaxies
论文作者
论文摘要
暗物质（DM）被预测为星系中的主要质量成分。在早期型星系的中央区域中，预计将占总质量的大量，尽管恒星质量仍应代表质量预算的大部分，具体取决于出色的初始质量功能（IMF）。我们讨论了有关局部星系的DM分数和平均DM密度的最新结果，并在宇宙历史的最后8 GYR中通过红移探索它们的演变。我们将这些结果与$λ$ CDM模型的期望进行了比较，并通过中央总质量密度斜率讨论了IMF和Galaxy模型的作用。我们最终介绍了下一代仪器/调查提供的未来观点（Rubin/LSST，Euclid，CSST，Weave，Weave，4 Moste，Desi），这将提供独特的机会，可以随时使用前所未有的星系数量来测量DM演化，并限制其进化风景。
Dark matter (DM) is predicted to be the dominant mass component in galaxies. In the central region of Early-type galaxies it is expected to account for a large amount of the total mass, although the stellar mass should still represent the majority of the mass budget, depending on the stellar Initial Mass Function (IMF). We discuss latest results on the DM fraction and mean DM density for local galaxies and explore their evolution with redshifts in the last 8 Gyr of the cosmic history. We compare these results with expectations from the $Λ$CDM model, and discuss the the role of the IMF and galaxy model, through the central total mass density slope. We finally present future perspectives offered by next generation instruments/surveys (Rubin/LSST, Euclid, CSST, WEAVE, 4MOST, DESI), that will provide the unique chance to measure the DM evolution with time for an unprecedented number of galaxies and constrain their evolutionary scenario.
