Lyman Alpha Emitters and Lyman Break Galaxies: dichotomous twins?

Lyman Alpha Emitters and Lyman Break Galaxies: dichotomous twins?
复制标题

DOI：
10.1111/j.1365-2966.2012.20486.x
复制
发表时间：
2011-09
期刊：
--
影响因子：
--
通讯作者：
P. Dayal;A. Ferrara
P. Dayal;A. Ferrara
中科院分区：
其他
文献类型：
--
作者：
P. Dayal;A. Ferrara

文献摘要

被引文献

相似文献

我们将我们以前的研究扩展到第二类高红移源--Lyman Break星系(LBGS)来模拟Lyman Alpha发射体(LAE)，最终目的是在z~6(8)的6=-18(-19)处研究它们之间的物理关系，但没有显示出可观测到的Lyman Alpha线。因此，LAE表示发光的LBG子集，其相对程度仅取决于所采用的等效宽度(EW)选择标准。此外，与目前的观测结果一致，我们发现由于尘埃和再电离的共同作用，LBGS显示Lyman Alpha线的比例随着红移的增加而减少。我们以一个简短的关键模型讨论结束，该讨论强调了理论EW确定所固有的不确定性。
(Abridged) We extend our previous studies aimed at modeling Lyman Alpha Emitters (LAEs) to the second population of high redshift sources, Lyman Break Galaxies (LBGs), with the final goal of investigating the physical relationship between them at 6= -18 (-19) at z ~ 6 (8) do not show an observable Lyman Alpha line. LAEs hence represent a luminous LBG subset, whose relative extent depends only on the adopted equivalent width (EW) selection criteria. Further, in line with current observations, we find that the fraction of LBGs showing a Lyman Alpha line decreases with increasing redshift due to the combined effects of dust and reionization. We conclude with a brief critical model discussion, which emphasizes the uncertainties inherent to theoretical EW determinations.