论文标题
L $ _ {\ rm [CII]} $ -SFR和[C $ _ {\ rm II} $]的预测在Reionization时期的光度函数
Predictions of the L$_{\rm[CII]}$-SFR and [C$_{\rm II}$] Luminosity Function at the Epoch of Reionization
论文作者
论文摘要
我们提出了$ l _ {\ rm [CII]} $ - SFR关系和[CII]光度函数（LF）在Reionization（EOR）中的[CII]光度函数（LF），基于宇宙流体动力学模拟，使用Simba Suite Suite Suite Suite Suite Suite和通过Sígame辐射转移计算计算。该样品由覆盖光晕质量$ \ log m _ {\ rm halo} \的11,137个星系组成，in $ [9，12.4] $ [9，12.4] $ m_ \ odot $，星形形成率sfr $ \ in $ [0.01，330] $ m_ \ odot $ m_ \ odot $ yr $ yr $ yr $ yr $^{-1} $^{ - 1} $ nm，和z $ <z as}> _ {\ rm sfr} \ in $ [0.1，0.9] $ z_ \ odot $。 The simulated $L_{\rm [CII]}$-SFR relation is consistent with the range observed, but with a spread of $\simeq$0.3 dex at the high end of SFR ($>$100 $M_\odot$ yr$^{-1}$) and $\simeq$0.6 dex at the lower end, and there is tension between our predictions and the values of $ l _ {\ rm [cii]} $上方10 $^{8.5} $ $ l_ \ odot $在文献中报告的一些星系中观察到。 $ l _ {\ rm [CII]} $ - SFR关系中的散布主要是由星系属性驱动的，因此，在给定的SFR，具有较高分子气体质量和金属性的星系具有较高的$ L _ {\ rm [CII]} $。 Simba预测的[CII] LF与EOR（ASPECS）唯一现有的未靶向磁通限制的[CII]调查以及半分析模型预测的[CII [CII]调查相一致。我们将结果与现有模型进行了比较，并讨论了$ l _ {\ rm [cii]} $ sfr Relatiion中差异斜率的差异。
We present the first predictions for the $L_{\rm [CII]}$ - SFR relation and [CII] luminosity function (LF) in the Epoch of Reionization (EoR) based on cosmological hydrodynamics simulations using the SIMBA suite plus radiative transfer calculations via SÍGAME. The sample consists of 11,137 galaxies covering halo mass $\log M_{\rm halo}\in$[9, 12.4] $M_\odot$, star formation rate SFR$\in$[0.01, 330] $M_\odot$ yr$^{-1}$, and metallicity $<Z_{\rm gas}>_{\rm SFR}\in$[0.1, 0.9] $Z_\odot$. The simulated $L_{\rm [CII]}$-SFR relation is consistent with the range observed, but with a spread of $\simeq$0.3 dex at the high end of SFR ($>$100 $M_\odot$ yr$^{-1}$) and $\simeq$0.6 dex at the lower end, and there is tension between our predictions and the values of $L_{\rm [CII]}$ above 10$^{8.5}$ $L_\odot$ observed in some galaxies reported in the literature. The scatter in the $L_{\rm [CII]}$-SFR relation is mostly driven by galaxy properties, such that at a given SFR, galaxies with higher molecular gas mass and metallicity have higher $L_{\rm [CII]}$. The [CII] LF predicted by SIMBA is consistent with the upper limits placed by the only existing untargeted flux-limited [CII] survey at the EoR (ASPECS) and those predicted by semi-analytic models. We compare our results with existing models and discuss differences responsible for the discrepant slopes in the $L_{\rm [CII]}$-SFR relatiion.
