Search Techniques for Distant Galaxies
Search Techniques for Distant Galaxies
复制标题
遥远星系的搜索技术
DOI：
10.1086/316471
复制
发表时间：
1999
影响因子：
3.5
通讯作者：
H. Spinrad
中科院分区：
文献类型：
--
作者：
D. Stern;H. Spinrad
星系是如何以及何时形成的？对微波背景辐射的研究表明，宇宙在红移z≈1000处是惊人的均匀。对局部宇宙的观测表明，到z = 0时，大部分发光物质已经凝聚成成熟的、被引力束缚的结构。今天天文学家面临的主要挑战之一是对星系形成和演化的过程有一个全面的了解。定位和研究年轻的星系在大回顾时间是这个计划的一个重要方面。我们回顾了用于识别早期宇宙时期星系的系统观测技术。在过去的几年中，对z>3正常恒星形成星系的研究已经成为可能；事实上，已经开发出成功的方法来推动边界超过z = 5。我们现在正直接观察大爆炸一个环流内的单个星系。我们详细回顾了用于识别遥远星系的许多搜索方法，考虑了不同搜索策略中固有的偏差，并讨论了这些研究的早期结果。最后，我们提出了21世纪初未来研究的目标。
How and when do galaxies form? Studies of the microwave background radiation reveal that the universe is spectacularly homogenous at redshift z ≈ 1000. Observations of the local universe reveal that by z = 0 much of the luminous matter has condensed into mature, gravitationally bound structures. One of the primary challenges to astronomers today is to achieve a robust understanding of this process of galaxy formation and evolution. Locating and studying young galaxies at large look‐back times is an essential aspect of this program. We review the systematic observational techniques used to identify galaxies at early cosmic epochs. In the past few years, the study of normal, star‐forming galaxies at z>3 has become possible; indeed, successful methods have been developed to push the frontier past z = 5. We are now directly observing individual galaxies within a Gyr of the big bang. We present a detailed review of the many search methods used for identifying distant galaxies, consider the biases inherent in different search strategies, and discuss early results of these studies. We conclude with goals for future studies at the start of the 21st century.
加拿大本地债券 (2)
DOI：
--
发表时间：
2006
期刊：
Chihosai Geppo 329
影响因子：
--
作者：
IKEGAMI;Takehiko
通讯作者：
Takehiko