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arXiv 1604.00992astro-ph.GA
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中等红移星系团的远红外射电关系

Far-infrared-radio relation in cluster galaxies at intermediate redshift

Solohery M. Randriamampandry

摘要:

1.4 GHz的射电光度与各种星系类型的远红外光度在很宽的红移范围内(例如[16,6,2])紧密相关(参见例如[5,1,15,8,7])。这种关系被广泛认为是由内部恒星形成活动驱动的。这些星系的射电辐射主要是由超新星冲击中加速的宇宙射线电子的同步辐射产生的。红外辐射是由于来自年轻大质量恒星的紫外线被尘埃吸收并重新辐射[3]。在本星系团中也发现了相关性,但相对于远红外辐射量,星系团星系似乎具有过量的射电辐射[9,13,11]。在这项工作中,我们测量的远红外线无线电关系在一个大规模的集群,以测试这种关系如何在中间z之间的字段和高密度集群环境的变化。

英文摘要:

The radio luminosities at 1.4 GHz is tightly correlated with the far-infrared luminosities for various galaxy types (e.g. [16, 6, 2]) over a wide range of redshift (see e.g. [5, 1, 15, 8, 7]). The relationship is widely believed to be driven by the internal star formation activity. Radio emission from these galaxies are predominantly produced from the synchrotron emission of cosmic-ray electrons accelerated in supernova shocks. The infrared emission is due to ultraviolet light from young massive stars that is absorbed and re-radiated by dust [3]. A correlation is found also in local clusters but cluster galaxies appears to have excess radio emission relative to the amount of far-infrared emission [9, 13, 11]. In this work, we measure the far-infrared-radio relationship in a massive cluster to test how this relationship changes at intermediate z between the field and a high-density cluster environment.

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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