An Accreting Supermassive Black Hole Irradiating Molecular Gas in NGC 2110
An Accreting Supermassive Black Hole Irradiating Molecular Gas in NGC 2110
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DOI：
10.3847/2041-8213/ab1262
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发表时间：
2019-03
期刊：
影响因子：
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通讯作者：
D. Rosario;A. Togi;L. Burtscher;R. Davies;T. Shimizu;D. Lutz
中科院分区：
文献类型：
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作者：
D. Rosario;A. Togi;L. Burtscher;R. Davies;T. Shimizu;D. Lutz
活动星系核（agn）对恒星形成的影响对我们理解超大质量黑洞与其星系之间的关系以及宇宙历史上星系的增长具有重要意义。我们报告了一个高分辨率的多阶段研究在附近的塞弗特星系NGC 2110核环境使用阿塔卡马大型毫米/亚毫米阵列，哈勃和斯皮策太空望远镜，以及甚大望远镜/SINFONI。我们在冷分子气体的低激发CO发射中发现了一个明显弱的区域，但似乎充满了电离和温暖的分子气体，这表明AGN直接影响了分子材料的性质。使用多种分子气体示踪剂，我们证明，尽管缺乏CO线发射，分子气体的表面密度和运动学在整个区域内平滑变化。我们的结果表明，AGN对恒星形成气体的影响可能是相当局部的。与广泛持有的理论期望相反，我们发现分子气体对高能AGN反馈的眩光仍然具有弹性。
The impact of active galactic nuclei (AGNs) on star formation has implications for our understanding of the relationships between supermassive black holes and their galaxies, as well as for the growth of galaxies over the history of the universe. We report on a high-resolution multiphase study of the nuclear environment in the nearby Seyfert galaxy NGC 2110 using the Atacama Large Millimeter/submillimeter Array, Hubble and Spitzer Space Telescopes, and the Very Large Telescope/SINFONI. We identify a region that is markedly weak in low-excitation CO emission from cold molecular gas, but appears to be filled with ionized and warm molecular gas, which indicates that the AGN is directly influencing the properties of the molecular material. Using multiple molecular gas tracers, we demonstrate that, despite the lack of CO line emission, the surface densities and kinematics of molecular gas vary smoothly across the region. Our results demonstrate that the influence of an AGN on star-forming gas can be quite localized. In contrast to widely held theoretical expectations, we find that molecular gas remains resilient to the glare of energetic AGN feedback.