论文标题
$ z = 6.0293 $ - $ 6.2037 $的Alma观察到CO排放的CO排放。
ALMA Observations for CO Emission from Luminous Lyman-break Galaxies at $z=6.0293$-$6.2037$
论文作者
论文摘要
我们介绍了针对CO（6-5）的新的Atacama大毫米/毫米阵列（ALMA）观察结果，该观察结果（6-5）从三个发光的Lyman破裂星系（LBGS）中排放为$ Z _ {\ rm Spec} = 6.0293 $ - $ 6.2037 $ - $ 6.2037 $ [CII] ALMA已检测到$158μ$ M排放。我们从我们的LBG之一，J0235-0532，以$ \ simeq4σ$显着性水平，获得其他两个LBG，J1211-11-1118和J0217-0208的上限。我们的$ z = 6 $发光的LBG与以前发现的CO光度与红外发光度之间的相关性一致。多个远红外发射线的独特集合和供电到光解离区域模型的基础连续体显示，J0235-0532具有相对较高的氢核密度，与低$ z $（u）lirgs，quasars and quasars and quasars and quastic star-formions的氢核密度相对较高，而两个高$ nb $ nb $ n _ $ n _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \ rm h h H H H h H H H H h H H H H H h H H H H H H H. $ n _ {\ rm h} $与本地恒星形成星系一致。通过仔细考虑各种不确定性，我们从其CO亮度测量值中获得了气体质量和气体表面密度限制。我们发现J0235-0532位于Kennicutt-Schmidt（KS）关系下方，可与先前CO（2-1）检测到的$ Z = 5.7 $ LBG，HZ10相当。结合以前在类似的红移的尘土飞扬的结果，$ z = 5 $ - $ 6 $的KS关系平均与当地的关系一致。
We present our new Atacama Large Millimeter/submillimeter Array (ALMA) observations targeting CO(6-5) emission from three luminous Lyman break galaxies (LBGs) at $z_{\rm spec} = 6.0293$-$6.2037$ found in the Subaru/Hyper Suprime-Cam survey, whose [OIII]$88μ$m and [CII]$158μ$m emission have been detected with ALMA. We find a marginal detection of the CO(6-5) line from one of our LBGs, J0235-0532, at the $\simeq 4 σ$ significance level and obtain upper limits for the other two LBGs, J1211-0118 and J0217-0208. Our $z=6$ luminous LBGs are consistent with the previously found correlation between the CO luminosity and the infrared luminosity. The unique ensemble of the multiple far-infrared emission lines and underlying continuum fed to a photodissociation region model reveal that J0235-0532 has a relatively high hydrogen nucleus density that is comparable to those of low-$z$ (U)LIRGs, quasars, and Galactic star-forming regions with high $n_{\rm H}$ values, while the other two LBGs have lower $n_{\rm H}$ consistent with local star-forming galaxies. By carefully taking account of various uncertainties, we obtain total gas mass and gas surface density constraints from their CO luminosity measurements. We find that J0235-0532 locates below the Kennicutt-Schmidt (KS) relation, comparable to the previously CO(2-1) detected $z=5.7$ LBG, HZ10. Combined with previous results for dusty starbursts at similar redshifts, the KS relation at $z=5$-$6$ is on average consistent with the local one.
