论文标题
Glass-JWST的早期结果。 iii：z $ \ sim $ 9-15的星系候选人
Early results from GLASS-JWST. III: Galaxy candidates at z$\sim$9-15
论文作者
论文摘要
我们在第一次搜索Galaxy候选人的结果中以Z $ \ SIM $ 9--15 $ 9--15在Deep Seven-Bands Nircam Imaging上作为Glass-JWST早期发行科学计划的一部分，在Frontier Fields群集A2744的侧翼领域中获得的一部分。候选人是通过Lyman-Break Technique的两种不同的演绎来选择的，分别以Z $ \ SIM $ 9-11和Z $ \ SIM $ 9-15隔离对象，并由使用两个独立代码获得的光度红移。我们发现五个颜色选择的候选人，Z $> $ 9，另外还有一名带有光度红移Z $ _ {phot} \ geq $ 9的候选人。特别是，我们以$ m_ {uv} \ simeq -21 $分别以$ z \ simeq 10.6 $和$ z \ simeq 12.2 $的形式确定了两个明亮的候选人。 $ z> 9 $发现的星系总数与非进化LF的预测一致。考虑到宇宙差异和少量统计信息，这两个明亮的$ z> 10 $ $ z> 10 $是出乎意料的。第一次搜索证明了JWST在高红移边界发现星系的独特力量。候选人是周期$ -2 $的光谱随访的理想目标。
We present the results of a first search for galaxy candidates at z$\sim$9--15 on deep seven-bands NIRCam imaging acquired as part of the GLASS-JWST Early Release Science Program on a flanking field of the Frontier Fields cluster A2744. Candidates are selected via two different renditions of the Lyman-break technique, isolating objects at z$\sim$9-11, and z$\sim$9-15, respectively, supplemented by photometric redshifts obtained with two independent codes. We find five color-selected candidates at z$>$9, plus one additional candidate with photometric redshift z$_{phot}\geq$9. In particular, we identify two bright candidates at $M_{UV}\simeq -21$ that are unambiguously placed at $z\simeq 10.6$ and $z\simeq 12.2$, respectively. The total number of galaxies discovered at $z>9$ is in line with the predictions of a non-evolving LF. The two bright ones at $z>10$ are unexpected given the survey volume, although cosmic variance and small number statistics limits general conclusions. This first search demonstrates the unique power of JWST to discover galaxies at the high redshift frontier. The candidates are ideal targets for spectroscopic follow-up in Cycle$-2$.
