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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >A 100?pc-scale fast and dense outflow in the narrow-line Seyfert?1 galaxy IRAS 04576+0912
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A 100?pc-scale fast and dense outflow in the narrow-line Seyfert?1 galaxy IRAS 04576+0912

机译：窄线塞弗1星系IRAS 04576 + 0912中有100？pc规模的快速密集流出

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摘要

We report the initial results of an adaptive-optics-assisted, optical integral-field-unit observation of IRAS 04576+0912, the nearest (z = 0.039) active galactic nucleus with a prominent blueshift/tail in [O?iii] emission from a sample of such objects that we have collected from the literature. We aim at addressing the putative quasar-mode feedback process with Subaru/Kyoto?3D?II+AO188. The optical waveband (6400–7500??) enables us to measure the gas density via the [S?ii] doublets, in contrast to earlier near-IR studies. Since the fast [O?iii] outflow happens only around rapidly growing central black holes, this object is suitable for investigating the black hole–galaxy coevolution. The obtained data cube exhibits a blue tail in the [S?ii] emission at many lenslets. By fitting the spectrum with the high excess flux at the [S?ii] bluetail, we find a fast (～860?km?s?1), dense (3000?cm?3), wide-angle, and offset outflow in central 100?pc scales. Although the large opening angle and the high gas outflow-to-accretion ratio may favor the feedback hypothesis, the inferred kinetic power injection rate of this ionized gas outflow seems insufficient to influence the whole host galaxy. A conventional assumption of a low density must have overestimated the feedback process.
机译：我们报告了IRAS 04576 + 0912（最接近（z = 0.039）活跃的银河核，具有显着的蓝移/尾在[O？iii]发射中的IRAS 04576 + 0912的自适应光学辅助，光学积分场单元观察）的初步结果。我们从文献中收集到的此类物体的样本。我们旨在利用Subaru / Kyoto？3D？II + AO188解决假定的类星体模式反馈过程。与早期的近红外研究相比，光波波段（6400–7500 ??）使我们能够通过[S？ii]双重峰测量气体密度。由于快速的[O？iii]流出仅发生在快速增长的中心黑洞周围，因此该对象适合于研究黑洞-银河系的共同演化。所获得的数据立方体在许多小透镜处的[Sii]发射中显示出蓝尾。通过在[S？ii]蓝尾处的高通量拟合光谱，我们发现速度快（〜860？km？s？1），致密（> 3000？cm？3），广角和偏移流出在中央100？pc秤上。尽管较大的开度角和较高的气体流出与吸收比率可能会支持反馈假设，但这种离子化气体流出的推论动能注入速率似乎不足以影响整个宿主星系。传统的低密度假设必须高估了反馈过程。

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