论文标题
[CII]和CIII]线的EOR中的星形形成法
Star formation law in the EoR from [CII] and CIII] lines
论文作者
论文摘要
我们提出了一种新的方法，可以通过[CII] 158 $μ$ M（及其已知的与星形形成速率）和CIII和CIII] $ 1909 $ 1909的发射线数据组合（及其已知的与星形形成速率）的组合，同时表征星系的恒星形成法和星系的星际培养基特性（EOR）。该方法基于马尔可夫链蒙特卡洛算法，允许确定目标星系平均密度，$ n $，气体金属性，$ z $和爆发参数，$κ_s$，量化肯尼苏特 - schmidt关系的偏差。作为一种应用，我们考虑COS-3018（Z = 6.854），这是迄今为止[CII]和CIII]中唯一检测到的EOR Lyman break Galaxy。我们证明cos-3018是一个中等的starburst（$κ_s\ 3 $），$ z \大约0.4 \，z _ {\ odot} $，$ n \ of $ n \大约500 \，{\ rm cm cm^{ - 3}}} $。我们的方法将最佳地应用于Alma和JWST目标。
We present a novel method to simultaneously characterise the star formation law and the interstellar medium properties of galaxies in the Epoch of Reionization (EoR) through the combination of [CII] 158$μ$m (and its known relation with star formation rate) and CIII]$λ$1909Å emission line data. The method, based on a Markov Chain Monte Carlo algorithm, allows to determine the target galaxy average density, $n$, gas metallicity, $Z$, and burstiness parameter, $κ_s$, quantifying deviations from the Kennicutt-Schmidt relation. As an application, we consider COS-3018 (z=6.854), the only EoR Lyman Break Galaxy so far detected in both [CII] and CIII]. We show that COS-3018 is a moderate starburst ($κ_s \approx 3$), with $Z\approx 0.4\, Z_{\odot}$, and $n \approx 500\, {\rm cm^{-3}}$. Our method will be optimally applied to joint ALMA and JWST targets.
