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首页> 外文期刊>New astronomy reviews >Hydrogen Balmer emission lines and the complex broad line region structure
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Hydrogen Balmer emission lines and the complex broad line region structure

机译：氢巴尔默发射谱线和复杂的宽谱线区域结构

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摘要

In this work we investigate the properties of the broad emission line components in the Balmer series of a sample of Type 1 Active Galactic Nuclei (AGN). Using the Boltzmann Plot method as a diagnostic tool for physical conditions in the plasma, we detect a relationship among the kinematical and thermo-dynamical properties of these objects. In order to further clarify the influence of the central engines on the surrounding material, we look for signatures of structure in the broad line emitting regions, that could affect the optical domain of the observed spectra. Using a combination of line profile analysis and kinematical modeling of the emitting plasma, we study how the emission line broadening functions are influenced by different structural configurations. The observed profiles are consistent with flattened structures seen at quite low inclinations, typically with i < 20°. Since this result is in good agreement with some independent observations at radio frequencies, we apply a new formalism to study the properties of AGN central engines.
机译：在这项工作中，我们研究了1型有源银河核（AGN）样品的Balmer系列中的宽发射谱线成分的特性。使用玻尔兹曼图解法作为血浆中物理条件的诊断工具，我们检测到这些物体的运动学和热力学性质之间的关系。为了进一步阐明中央引擎对周围材料的影响，我们在宽线发射区域中寻找结构的特征，这可能会影响所观察光谱的光学范围。结合使用线轮廓分析和发射等离子体的运动学模型，我们研究了发射线展宽功能如何受到不同结构构型的影响。观察到的轮廓与在非常低的倾斜度（通常i <20°）下看到的扁平结构相一致。由于此结果与射频上的一些独立观测结果非常吻合，因此我们采用了一种新的形式主义来研究AGN中央引擎的特性。

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  • 来源
    《New astronomy reviews》 |2009年第10期|162-168|共7页
  • 作者

    G. La Mura; F. Di Mille; L.C. Popovic; S. Ciroi; P. Rafanelli; D. Ilic;

  • 作者单位

    Department of Astronomy, University of Padova, Vicolo dell'Osservatorio 3,I-35122 Padova, Italy;

    Department of Astronomy, University of Padova, Vicolo dell'Osservatorio 3,I-35122 Padova, Italy;

    Astronomical Observatory, Volgina 7, 11060 Belgrade, Serbia Isaac Newton Institute of Chile, Yugoslavia Branch, 11060 Belgrade, Serbia;

    Department of Astronomy, University of Padova, Vicolo dell'Osservatorio 3,I-35122 Padova, Italy;

    Department of Astronomy, University of Padova, Vicolo dell'Osservatorio 3,I-35122 Padova, Italy;

    Department of Astronomy, Faculty of Mathematics, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia;

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  • 正文语种 eng
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  • 关键词

    galaxies: active; galaxies: nuclei; galaxies: Seyfert; line: profiles; quasars: emission lines;

    机译：星系：活跃;星系：原子核;星系：塞弗特;行：配置文件;类星体：发射线;

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