ACS LCID项目：概述和初步结果
The ACS LCID Project: overview and first results
摘要：
本星系群的恒星形成史（SFH）是研究其演化的有力工具，包括化学富集史和恒星星族密度梯度，进而可以揭示再电离或超新星反馈在星系形成和演化中的作用。特别是，孤立的矮星系是理想的实验室，因为它们的演化并没有被巨大的星系所复杂化。在本文中，我们提出的项目本地宇宙学从孤立的矮星系（LCID），旨在获得详细的SFH的样本本地集团孤立的矮星系。为了实现这一目标，我们用HST上的ACS收集了到达它们最古老的主序转折点（V~28或M_V~+3.5）的具有良好光度精度的颜色-星等图（CMD）。一些初步的结果，从CMD显示和简要讨论。
英文摘要：
The star formation history (SFH) of Local Group galaxies is a powerful tool for studying their evolution, including chemical enrichment histories and stellar population gradients, which in turn may shed light on the role of reionization or Supernovae feedback in galaxy formation and evolution. In particular, isolated dwarfs are ideal laboratories since their evolution has not been complicated by the vicinity of giant galaxies. In this paper, we present the project Local Cosmology from Isolated Dwarfs (LCID), aimed at deriving detailed SFHs for a sample of Local Group isolated dwarf galaxies. To accomplish this goal we have collected, using the ACS on board the HST, color-magnitude diagrams (CMD) reaching their oldest main sequence turnoff (V~28 or M_V~+3.5) with good photometric accuracy. Some preliminary results from the CMDs are shown and briefly discussed.
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。
