A cosmologically significant population of galaxies dominated by very young star formation
A cosmologically significant population of galaxies dominated by very young star formation
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具有宇宙学意义的星系群，以非常年轻的恒星形成为主
DOI：
10.1086/185259
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
I. McLean
中科院分区：
文献类型：
--
作者：
L. Cowie;S. Lilly;J. Gardner;I. McLean
在一次极深的光学和红外小视场巡天中，发现了一个星系群，其光在从B到K的所有波长上都被一个非常年轻的恒星群所支配。这些星系一定代表了宇宙历史上主要的恒星形成时期之一，大约10%到100%的金属必须在其中形成。它们的红移必须小于3.5，可能是一个真正的原星系群，也可能是早期形成的星系的复兴阶段。视野中微弱的I带星星计数排除了银河系暗晕可能由燃烧氢的主序星组成的可能性。16篇参考文献。
A population of galaxies whose light is dominated at all wavelengths from B to K by a very young stellar population has been found in an extremely deep optical and IR small-field survey. These galaxies must represent one of the main star-forming epochs in the history of the universe and approximately 10-100 percent of the metals must have formed in them. They must have a redshift less than 3.5 and may constitute either a genuine protogalaxy population or a rejuvenation phase of galaxies that formed earlier. The faint I band star counts in the field eliminate the possibility that the Galactic dark halo may be composed of hydrogen-burning main-sequence stars. 16 references.