红移 9.51 处具有强星云发射线的放大致密星系
星系天体物理
2023-05-11 v5
摘要
早期星系发出的紫外光被认为使星系际介质中的气体电离。然而，由于这些星系的微弱以及其光学光红移至红外波段，对这一时期的观测约束很少。我们在 JWST 成像中报告了对一个由引力透镜放大的遥远星系的观测。该星系在静止系光学波段的 JWST 光谱探测到了可归因于氧和氢的强星云发射线。测得的红移为 z = 9.51 +- 0.01，对应于大爆炸后 5.1 亿年。该星系的半径为 16.2+4.6-7.2 秒差距，比 z = 6 至 8 处具有等效光度的星系要致密得多，从而导致了高产星率面密度。
引用
@article{arxiv.2210.15699,
title = {A Magnified Compact Galaxy at Redshift 9.51 with Strong Nebular Emission Lines},
author = {Hayley Williams and Patrick L. Kelly and Wenlei Chen and Gabriel Brammer and Adi Zitrin and Tommaso Treu and Claudia Scarlata and Anton M. Koekemoer and Masamune Oguri and Yu-Heng Lin and Jose M. Diego and Mario Nonino and Jens Hjorth and Danial Langeroodi and Tom Broadhurst and Noah Rogers and Ismael Perez-Fournon and Ryan J. Foley and Saurabh Jha and Alexei V. Filippenko and Lou Strolger and Justin Pierel and Frederick Poidevin and Lilan Yang},
journal= {arXiv preprint arXiv:2210.15699},
year = {2023}
}