arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.01361astro-ph.GA
收藏

LESSER:用半导体激光器作透镜的Lyman- $α$发射体光谱选择样品目录

LESSER: A Catalogue of Spectroscopically selected sample of Lyman-$α$ Emitters Lensed By Galaxies

Xiaoyue Cao, Ran Li, Yiping Shu, Shude Mao, Jean-Paul Kneib, Liang Gao

摘要:

本文介绍了Eboss巡天(LESSER)计划中的LENSed激光器,该计划的目的是在扩展重子振荡谱巡天(eBOSS)中寻找透镜莱曼- $α$发射体(LAEs)。最终目录包含361个候选透镜系统。透镜星系是红移为$0.4 < z < 0.8$的发光红星系(LRGs),源星系是红移为$2 < z < 3$的LAEs。eBOSS($\sim$ 2000)的光谱分辨率允许我们进一步识别$α$($\rm Lyα$)发射的精细结构。在我们的透镜LAE候选者中,281个系统呈现单峰线轮廓,而80个系统显示双峰特征。未来的光谱/成像的后续观测的目录可能揭示了不同的$\rm Lyα$线形态的起源,并提供有前途的实验室研究低质量的暗物质晕/subhaloes。

英文摘要:

We introduce the LEnSed laeS in the Eboss suRvey (LESSER) project, which aims to search for lensed Lyman-$α$ Emitters (LAEs) in the Extended Baryon Oscillation Spectroscopic Survey (eBOSS). The final catalog contains 361 candidate lensing systems. The lens galaxies are luminous red galaxies (LRGs) at redshift $0.4 < z < 0.8$, and the source galaxies are LAEs at redshift $2 < z < 3$. The spectral resolution of eBOSS ($\sim$2000) allows us to further identify the fine structures of Lyman-$α$ ($\rm Lyα$) emissions. Among our lensed LAE candidates, 281 systems present single-peaked line profiles while 80 systems show double-peaked features. Future spectroscopic/imaging follow-up observations of the catalog may shed light on the origin of diverse $\rm Lyα$ line morphology, and provide promising labs for studying low mass dark matter haloes/subhaloes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑