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arXiv 1102.3249astro-ph.CO
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eCDFS中z ~ 2远红外-射电相关没有演化的证据

No Evidence for Evolution in the Far-Infrared-Radio Correlation out to z ~ 2 in the eCDFS

Minnie Y. Mao, Minh Huynh, Ray P. Norris, Mark Dickinson, David Frayer, George Helou, Jacqueline Monkiewicz

摘要:

本文研究了扩展钱德拉深场南(ECDFS)中恒星形成星系的70 μ m远红外射电相关(FRC),直到z > 2。我们使用70微米的数据从远红外深河外遗产调查(FIDEL),其中包括最敏感的(~0.8毫焦耳均方根)和广泛的远红外深场观测使用MIPS的斯皮策太空望远镜,和1.4 GHz的无线电数据(~8 μ焦耳/光束均方根)从VLA。为了量化FRC的演变,我们使用生存分析和叠加技术,我们发现得到类似的结果。我们还计算了FRC使用总红外光度和静止帧无线电光度,qTIR,并发现qTIR是恒定的(0.22内)的红移范围0 - 2。我们没有看到任何证据表明在70微米的FRC进化,这是令人惊讶的,因为许多因素,预计将改变这一比例在高红移。

英文摘要:

We investigate the 70 um Far-Infrared Radio Correlation (FRC) of star-forming galaxies in the Extended Chandra Deep Field South (ECDFS) out to z > 2. We use 70 um data from the Far-Infrared Deep Extragalactic Legacy Survey (FIDEL), which comprises the most sensitive (~0.8 mJy rms) and extensive far-infrared deep field observations using MIPS on the Spitzer Space Telescope, and 1.4 GHz radio data (~8 uJy/beam rms) from the VLA. In order to quantify the evolution of the FRC we use both survival analysis and stacking techniques which we find give similar results. We also calculate the FRC using total infrared luminosity and rest-frame radio luminosity, qTIR, and find that qTIR is constant (within 0.22) over the redshift range 0 - 2. We see no evidence for evolution in the FRC at 70 um which is surprising given the many factors that are expected to change this ratio at high redshifts.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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