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arXiv 1102.4638astro-ph.CO
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第一个星系

The First Galaxies

Volker Bromm, Naoki Yoshida

摘要:

我们回顾了我们目前对第一个星系如何在宇宙黑暗时代结束时形成的理解,即大爆炸后的一亿年。现代的大型望远镜发现了红移大于7的星系,而理论研究刚刚达到做出有意义的预测所必需的复杂程度。一个关键的因素是第一代恒星通过紫外线辐射、超新星爆炸波和化学浓缩产生的反馈。主要目标是获得即将或计划中的下一代设施(如詹姆斯韦伯太空望远镜或阿塔卡马大型毫米波阵列)观察到的第一个星系的签名。从观测的角度来看,正在进行的深场搜索非常高红移星系开始为我们提供第一个星系的性质的经验约束。

英文摘要:

We review our current understanding of how the first galaxies formed at the end of the cosmic dark ages, a few 100 million years after the Big Bang. Modern large telescopes discovered galaxies at redshifts greater than seven, whereas theoretical studies have just reached the degree of sophistication necessary to make meaningful predictions. A crucial ingredient is the feedback exerted by the first generation of stars, through UV radiation, supernova blast waves, and chemical enrichment. The key goal is to derive the signature of the first galaxies to be observed with upcoming or planned next-generation facilities, such as the James Webb Space Telescope or Atacama Large Millimeter Array. From the observational side, ongoing deep-field searches for very high-redshift galaxies begin to provide us with empirical constraints on the nature of the first galaxies.

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。

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