论文标题
[C II]检测星系中的缩放关系及其在宇宙学中的可能应用
A scaling relation in [C II]-detected galaxies and its likely application in cosmology
论文作者
论文摘要
我们识别并研究了$ \ rm {[CII]}158μm$ luminosity和lineWidth之间的可能相关性，$ \ rm {[CII]} $检测到的星系。从观察上讲，$ \ rm {[CII]}158μm$排放线的强度通常比CO发射线的强度强，并且此$ \ rm {[CII]} $线已被用作银河特征的另一个示踪剂。此外，许多$ \ rm {[CII]} $ - 检测到的星系在$ z> 4 $中都标识。以先前对CO光度的研究 - FWHM相关关系（LFR）和可用的新$ \ rm {[CII]} $测量值的动机，我们编译了$ \ rm {[CII]} $检测到的文献中的星系的样品，并进行了线性回归分析。 $ \ rm {[CII]} $ lfr在强大的水平上被确认。我们还通过在高$ z $ galaxy的距离测量中使用$ \ rm {[CII]} $ LFR的可能应用。结果，我们将宇宙空间量表扩展到红移$ z $ 7 $的范围之外。通过距离测量结果的结果，我们限制了Chevallier-Polarski-Linder模型中的宇宙学参数，该参数考虑了暗能量的演变。因此，当$ \ rm {[cii]} $ {[cii]} $ rm {[cii]}检测到的星系中的测量距离数据中包括在宇宙学参数限制中，使用exemplefifying exemplearifying of exemplying，$ \ textit {w} _ {w} _ {0} $和$ \ textit {w} _ {a} $的不确定性大大减少了。 $ \ rm {[CII]} $ - 检测到的星系是限制宇宙参数的示踪剂。
We identify and investigate a possible correlation between the $\rm{[CII]} 158μm$ luminosity and linewidth in the $\rm{[CII]}$-detected galaxies. Observationally, the strength of the $\rm{[CII]} 158μm$ emission line is usually stronger than that of the CO emission line and this $\rm{[CII]}$ line has been used as another tracer of the galactic characteristics. Moreover, many $\rm{[CII]}$-detected galaxies are identified in $z > 4$. Motivated by previous studies of the CO luminosity - FWHM correlation relation (LFR) and the available new $\rm{[CII]}$ measurements, we compile samples of the $\rm{[CII]}$-detected galaxies in the literature and perform the linear regression analysis. The $\rm{[CII]}$ LFR is confirmed at a robust level. We also demonstrate the possible application of the $\rm{[CII]}$ LFR by utilizing it on the distance measurement of the high-$z$ galaxy. As a result, we extend the cosmic spatial scale beyond the redshift $z$ of $7$. With the outcome of the distance measurement, we constrain the cosmology parameters in the Chevallier-Polarski-Linder model, which considers the evolution of dark energy. Consequently, the uncertainties of the $\textit{w}_{0}$ and $\textit{w}_{a}$ are reduced significantly when the measured distance data of the $\rm{[CII]}$-detected galaxies are included in the cosmological parameter constraint, exemplifying the potential of using the $\rm{[CII]}$-detected galaxies as a tracer to constrain the cosmological parameters.
