Radio Identification of Submillimeter Sources in the Hubble Deep Field
Radio Identification of Submillimeter Sources in the Hubble Deep Field
复制标题
哈勃深场亚毫米源的无线电识别
DOI：
10.1086/311905
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
E. Richards
中科院分区：
文献类型：
--
作者：
E. Richards
确定外场星系随时间变化的恒星形成率是观测宇宙学的主要目标之一。最近，Hughes等人使用James Clerk Maxwell望远镜上的亚毫米通用测辐射热计阵列仪器，报告了一组新的被厚厚的尘埃覆盖的、高红移的恒星形成星系(z>；2)，极大地改变了星系演化的图景。然而，我们表明，这种解释必须谨慎对待，因为在识别宿主星系方面存在模糊性。基于我们对哈勃深场的深度、高分辨率1.4 GHz观测，我们建议对亚毫米探测进行替代识别。这些发现表明，随着z>；2亚毫米/远红外光度密度和全球恒星形成率的降低，向亚毫米群体的红移会更小。
Determination of the epoch-dependent star formation rate of field galaxies is one of the principal goals of observational cosmology. Recently, Hughes et al., using the Submillimeter Common-User Bolometer Array instrument on the James Clerk Maxwell Telescope, reported the detection of a new population of heavily dust enshrouded, star-forming galaxies at high redshifts (z>2), dramatically altering the picture of galaxy evolution. However, we show that this interpretation must be treated with caution because of ambiguities in the identification of the host galaxies. Based on our deep, high-resolution 1.4 GHz observations of the Hubble Deep Field, we suggest alternate identifications to the submillimeter detections. These identifications argue for a lower redshift to the submillimeter population with a consequential lowering of the z>2 submillimeter/far-infrared luminosity density and global star formation rate.