论文标题
IRAM 30m-emir红移搜索Z =从草药样品中选择的3-4个镜头尘土飞扬
IRAM 30m-EMIR Redshift Search of z = 3-4 Lensed Dusty Starbursts selected from the HerBS sample
论文作者
论文摘要
使用IRAM 3000万望远镜上的Emir仪器，我们对七个Z $ _ {\ rm phot} $ $ \ sim $ 4 Sub-Millimetre明亮的星系进行了光谱红移搜索，从Herschel Bright（草药）中选择了带有500 $ $ m $ m $ m $ m JY的磁带样品的明亮星系。对于四个来源，我们通过检测具有J $ \ leq $ 3的多个共磁线在3.4 <z <4.1之间获得了光谱红移。后来，我们发现了其中两个使用GBT（包括CO（1-0））的GBT的两个来源的低J转变。对于其余三个来源，需要更多数据来明确确定光谱红移。测得的CO亮度和线宽度表明所有这些来源都是重力镜头。这些观察结果表明，2 mM窗口是必不可少的，以确认Z <4来源的鲁棒光谱红移。最后，我们提出了一种有效的图形方法，可以正确识别光谱红移。
Using the EMIR instrument on the IRAM 30m telescope, we conducted a spectroscopic redshift search of seven z$_{\rm phot}$ $\sim$ 4 sub-millimetre bright galaxies selected from the Herschel Bright Sources (HerBS) sample with fluxes at 500 $μ$m greater than 80 mJy. For four sources, we obtained spectroscopic redshifts between 3.4 < z < 4.1 through the detection of multiple CO-spectral lines with J $\leq$ 3. Later, we detected low-J transitions for two of these sources with the GBT including the CO(1-0) transition. For the remaining three sources, more data are needed to determine the spectroscopic redshift unambiguously. The measured CO luminosities and line widths suggest that all these sources are gravitationally lensed. These observations demonstrate that the 2 mm window is indispensable to confirm robust spectroscopic redshifts for z < 4 sources. Finally, we present an efficient graphical method to correctly identify spectroscopic redshifts.
