通过红序列的增长寻找杀死伽伐尼的临界晕质量
Tracking Down a Critical Halo Mass for Killing Galaxies through the Growth of the Red-Sequence
摘要：
红序星系记录了宇宙中恒星形成终止的历史，因此可以为这种终止的机制提供重要线索。我们构建复合样品的公布集群和领域的星系测光，以研究建立的星系的红色序列，作为参数化的矮-巨比（DGR）。我们发现在所有红移处，星系团的DGR都高于光场的DGR，这意味着红序列的暗端在星系团中首先建立。我们发现，DGR的发展与红移的两个样本，一致的“缩小”图片的恒星形成。我们研究半解析模型的预测DGR，发现无论是它的环境依赖性的大小，也没有正确的预测模型的演变。在模型中，红色序列的DGRs总是太高，最可能的解释是用于从卫星星系中去除热气的扼杀机制太有效了。最后，我们提出了一个简单的玩具模型，包括一个阈值质量，低于该质量的星系不会被扼杀，并表明这可以预测所观察到的场DGR的演变。
英文摘要：
Red-sequence galaxies record the history of terminated star-formation in the Universe and can thus provide important clues to the mechanisms responsible for this termination. We construct composite samples of published cluster and field galaxy photometry in order to study the build-up of galaxies on the red-sequence, as parameterised by the dwarf-to-giant ratio (DGR). We find that the DGR in clusters is higher than that of the field at all redshifts, implying that the faint end of the red-sequence was established first in clusters. We find that the DGR evolves with redshift for both samples, consistent with the ``down-sizing'' picture of star formation. We examine the predictions of semi-analytic models for the DGR and find that neither the magnitude of its environmental dependence nor its evolution is correctly predicted in the models. Red-sequence DGRs are consistently too high in the models, the most likely explanation being that the strangulation mechanism used to remove hot gas from satellite galaxies is too efficient. Finally we present a simple toy model including a threshold mass, below which galaxies are not strangled, and show that this can predict the observed evolution of the field DGR.
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。
