HIGH-VELOCITY BIPOLAR MOLECULAR EMISSION FROM AN AGN TORUS
HIGH-VELOCITY BIPOLAR MOLECULAR EMISSION FROM AN AGN TORUS
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AGN 环面的高速双极分子发射
DOI：
10.3847/2041-8205/829/1/l7
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
E. Sani
中科院分区：
文献类型：
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作者：
J. Gallimore;M. Elitzur;M. Elitzur;R. Maiolino;A. Marconi;A. Marconi;C. O’Dea;D. Lutz;S. Baum;R. Nikutta;C. Impellizzeri;R. Davies;A. Kimball;E. Sani
在ALMA观测中，我们探测到了来自塞弗特星系NGC1068核心的CO发射。低速(S−1相对于系统的±70公里)CO发射分解成一个12×7的PC结构，大致与核射电源对齐。较高速度的辐射(S−1)与近垂直于核盘的双极流出(≃80°)相一致。位置-速度图表明，速度场除了外流外，还可能包含绕圆盘轴线的旋转。这些观测提供了令人信服的证据，支持活动星系核遮挡环面的盘风情景。
We have detected in ALMA observations CO emission from the nucleus of the Seyfert galaxy NGC 1068. The low-velocity (up to ±70 km s−1 relative to systemic) CO emission resolves into a 12 × 7 pc structure, roughly aligned with the nuclear radio source. Higher-velocity emission (up to ±400 km s−1) is consistent with a bipolar outflow in a direction nearly perpendicular (≃80°) to the nuclear disk. The position–velocity diagram shows that in addition to the outflow, the velocity field may also contain rotation about the disk axis. These observations provide compelling evidence in support of the disk-wind scenario for the active galactic nucleus obscuring torus.