论文标题
Herschel检测到的强烈透明尘土形成星系的样本的远红外/无线电相关性
The far-infrared/radio correlation for a sample of strongly lensed dusty star-forming galaxies detected by Herschel
论文作者
论文摘要
我们研究了$ 28 $的28 $明亮的高红速度（$ 1 \ Lesssim Z \ Lessim 4 $ 4 $）的射电火力红外（FIR）相关性，从Herschel-Atlas领域中选择了恒星形成的星系，作为候选者，将其重力透明。无线电信息来自高灵敏度专用于ATCA的观测值，价格为$ 2.1 $ GHz，或者来自交叉匹配，首次调查为$ 1.4 $ GHz。通过利用源亮度可以通过镜头放大倍率增强，我们确定了较弱的进化，将红移降至$ z \ sillesim 4 $ 4 $的fir-radio亮度比$ q _ {\ rm fir} $。我们还发现，$ q _ {\ rm fir} $参数是无线电功率$ l_ {1.4 \，\ rm ghz} $的函数，显示出明显的下降趋势，与在文献中发现的光学/无线无线电选择的镜头相似，但在文献中发现了$ q _} {1.} {\ rm rm rm rm rm rm rm rm rm rm rm rm rm rm rm rm rm rm rm。 GHz} $图。由于从早期的尘埃刺激的恒星形成阶段（主要是由我们的FIR选择点上的精确指数）到晚期无线电大声果酱阶段（优先通过光学/无线电选择取样），我们在原位星系形成场景的框架中解释了这种行为。
We investigate the radio-far infrared (FIR) correlation for a sample of $28$ bright high-redshift ($1 \lesssim z \lesssim 4$) star-forming galaxies selected in the FIR from the Herschel-ATLAS fields as candidates to be strongly gravitationally lensed. The radio information comes either from high sensitivity dedicated ATCA observations at $2.1$ GHz or from cross-matches with the FIRST survey at $1.4$ GHz. By taking advantage of source brightness possibly enhanced by lensing magnification, we identify a weak evolution with redshift out to $z\lesssim 4$ of the FIR-to-radio luminosity ratio $q_{\rm FIR}$. We also find that the $q_{\rm FIR}$ parameter as a function of the radio power $L_{1.4\,\rm GHz}$ displays a clear decreasing trend, similarly to what is observed for optically/radio selected lensed quasars found in literature, yet covering a complementary region in the $q_{\rm FIR}-L_{1.4\,\rm GHz}$ diagram. We interpret such a behavior in the framework of an in-situ galaxy formation scenario, as a result of the transition from an early dust-obscured star-forming phase (mainly pinpointed by our FIR selection) to a late radio-loud quasar phase (preferentially sampled by the optical/radio selection).
