发表机构
Indiana University; NorthWest Arkansas Community College; University of Texas, Hobby–Eberly Telescope, McDonald Observatory（印第安纳大学; 西北阿肯色社区学院; 德克萨斯大学霍比-埃伯利望远镜麦克唐纳天文台）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究利用SFACT巡天的窄带成像数据，通过gri颜色和[O III]等效宽度筛选出约120个绿豌豆星系候选体，其红移范围0.31-0.51，并发现SFACT深度可探测到更低亮度的候选体。
AI 中文摘要
绿豌豆星系（GPs）是一类稀有、极端的恒星形成星系，其物理性质与高红移的莱曼-α发射星系非常相似。它们具有高等效宽度的[O III]发射线，这使得它们在发射线星系巡天中很容易被识别，例如正在进行的深场窄带“宇宙时间中的恒星形成”（SFACT）巡天。在本研究中，我们利用宽带gri颜色和由窄带图像导出的[O III]等效宽度，从SFACT巡天中识别出的[O III]探测星系星表中，筛选出一个包含约120个GP候选体的新样本。所有SFACT GP候选体均具有光谱证认的红移，范围在z = 0.31-0.51之间。我们样本的中值视星等为g = 22.9。我们将GP候选体样本的性质与其他已知GP样本进行了比较。我们发现，SFACT卓越的深度使我们能够探测到比这些比较样本更低的亮度的GP候选体。这是SFACT GP候选体的首个星表；随着SFACT巡天的光谱后续观测完成，将添加更多的候选体。
英文摘要
Green Pea galaxies (GPs) are a class of rare, extreme star-forming galaxies whose physical properties closely resemble high-redshift Ly-α emitting galaxies. Their high equivalent width [O III] emission lines make them readily identifiable in surveys of emission-line galaxies like the on-going deep, narrowband Star Formation Across Cosmic Times (SFACT) survey. In this study, we use broadband gri colors and [O III] equivalent widths derived from narrowband images to select a new sample of ~120 GP candidates from a catalog of [O III]-detected galaxies identified in the SFACT survey. All SFACT GP candidates have spectroscopically confirmed redshift in the range z = 0.31-0.51. The median apparent magnitude of our sample is g = 22.9. We compare the properties of our GP candidate sample to other samples of known GPs. We find that the excellent depth of SFACT allows us to detect GP candidates to lower luminosities than these comparison samples. This is the first catalog of SFACT GP candidates; additional candidates will be added as the spectroscopic follow-up of the SFACT survey is completed.
Comments27 pages, 16 figures. Accepted for publication in ApJS
