论文标题
部分可观测时空混沌系统的无模型预测
A Magnified Compact Galaxy at Redshift 9.51 with Strong Nebular Emission Lines
论文作者
论文摘要
据认为，早期星系中的紫外线在层间培养基中具有电离气体。但是，由于这些星系的昏暗以及将其光学光的红移带入红外线，因此几乎没有观察性约束。我们在JWST成像中报告了一个遥远的星系，该观察被重力镜头放大。在静止框架光波长下，星系的JWST光谱检测到可归因于氧气和氢的强轴发射线。测得的红移是z = 9.51 +-0.01，对应于大爆炸后的5.1亿年。银河系的半径为16.2+4.6-7.2 parsecs，比在z = 6至8时具有等效光度的星系更紧凑，从而导致高星形形成速率表面密度。
Ultraviolet light from early galaxies is thought to have ionized gas in the intergalactic medium. However, there are few observational constraints on this epoch because of the faintness of those galaxies and the redshift of their optical light into the infrared. We report the observation, in JWST imaging, of a distant galaxy that is magnified by gravitational lensing. JWST spectroscopy of the galaxy, at rest-frame optical wavelengths, detects strong nebular emission lines that are attributable to oxygen and hydrogen. The measured redshift is z = 9.51 +- 0.01, corresponding to 510 million years after the Big Bang. The galaxy has a radius of 16.2+4.6-7.2 parsecs, which is substantially more compact than galaxies with equivalent luminosity at z = 6 to 8, leading to a high star formation rate surface density.
