论文标题
混合形态无线电源的宿主星系
The Host Galaxies of Hybrid Morphology Radio Sources
论文作者
论文摘要
根据它们不同的无线电形态，可以将强大的射电星系分为Fanaroff-Riley I（FR-I）和II（FR-II）类。混合形态的无线电源（Hymors）包含与两侧的每种类型的喷气式一致的形态：一种强大的，高度相对论的FR-II样喷气机在一侧的热点中终止，另一侧是周五的羽流。正性为研究引起二分法的疾病提供了独特的机会。使用宿主星系特性，我们对方向是否可以解释海直形态进行了第一次多波长研究。通过光谱和中红外光度法，我们分析了发射特性，并评估了中间红移处五个hymors宿主星系的广泛特征（0.4 <z <z <1.5）。我们样品中的Hymors宿主星系具有与FR-II来源的典型宿主星系一致的特性，这表明观察到的混合形态可能是由浓密的，类似群集的环境弯曲的FR-II喷气机与有利的方向相结合的，可以使一个侧面看起来与FR-I射流相似。因此，我们的结果支持以下假设：正则主要是由环境和方向引起的。
Based on their differing radio morphologies, powerful radio galaxies can be separated into the Fanaroff-Riley I (FR-I) and II (FR-II) classes. Hybrid morphology radio sources (HyMoRS) contain morphologies consistent with each type of jet on either side: a powerful, highly relativistic FR-II-like jet terminating in a hotspot on one side and an FRI-like plume on the other. HyMoRS present a unique opportunity to study the conditions which give rise to the dichotomy. Using host galaxy properties, we conduct the first multiwavelength investigation into whether orientation can explain HyMoRS morphology. Through optical spectroscopy and mid-infrared photometry, we analyze the emission characteristics, and evaluate the broad characteristics of five HyMoRS host galaxies at intermediate redshifts (0.4 < z < 1.5). The HyMoRS host galaxies in our sample have properties consistent with typical host galaxies of FR-II sources, suggesting that the observed hybrid morphologies may be caused by a dense, cluster-like environment bending FR-II jets combined with a favorable orientation which can make one side appear similar to an FR-I jet. Our results thus support the hypothesis that HyMoRS are mainly caused by environment and orientation.
