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arXiv 2201.02208astro-ph.GA
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类星体反馈巡天:多相外流、turbulence和倾斜进入星系盘的低功率射电喷流引起的反馈的证据

Quasar Feedback Survey: Multi-phase outflows, turbulence and evidence for feedback caused by low power radio jets inclined into the galaxy disk

A. Girdhar, C. M. Harrison, V. Mainieri, A. Bittner, T. Costa, P. Kharb, D. Mukherjee, F. Arrigoni Battaia, D. M. Alexander, G. Calistro Rivera, C. Circosta, C.… 展开作者

A. Girdhar, C. M. Harrison, V. Mainieri, A. Bittner, T. Costa, P. Kharb, D. Mukherjee, F. Arrigoni Battaia, D. M. Alexander, G. Calistro Rivera, C. Circosta, C. De Breuck, A. C. Edge, E. P. Farina, D. Kakkad, G. B. Lansbury, S. J. Molyneux, J. R. Mullaney, Silpa S., A. P. Thomson, S. R. Ward

摘要:

我们提出了一个发光的,z=0.15,2型类星体(log [L([OIII])/(erg/s)]=42.8)从类星体反馈调查的研究。它被归类为“无线电安静”(log [L(1.4 GHz)/(W/Hz)]=23.8);然而,无线电成像显示约1 kpc的低功率喷流(log [Pjet/(erg/s)]=44)倾斜进入星系盘平面。我们结合MUSE和ALMA观测来绘制恒星运动学和电离气体和分子气体的性质。喷流被视为驱动星系范围内的双锥形湍流外流,达到W80 = 1000-1300 km/s,在电离阶段(通过光学发射线跟踪),这也增加了电子密度相比,静止的气体。湍流气体垂直于喷流轴被驱动,并沿着星系短轴逃逸,两侧达到7.5千秒差距。通过CO(3-2)发射追踪,分子气相中的湍流物质是空间延伸的三分之一,并且与电离气体相比具有低3倍的速度色散。喷流被认为是强烈的相互作用与星际介质(ISM)通过增强电离发射和扰动/耗尽分子气体在射流终端。我们通过显著更高的恒星速度色散与喷流轴(<5度)对齐和共空间,看到了喷流诱导反馈的进一步证据。我们讨论了可能的负反馈和正反馈的情况下,由于低功率喷气机与ISM的相互作用的背景下,最近的喷气ISM相互作用的模拟,定性地同意我们的观察。我们讨论如何喷流诱导反馈可能是一个重要的反馈机制,即使在测辐射发光的“无线电安静”类星体。

英文摘要:

We present a study of a luminous, z=0.15, type-2 quasar (log [L([OIII])/(erg/s)]=42.8) from the Quasar Feedback Survey. It is classified as 'radio-quiet' (log [L(1.4 GHz)/(W/Hz)]=23.8); however, radio imaging reveals ~1 kpc low-power jets (log [Pjet/(erg/s)]=44) inclined into the plane of the galaxy disk. We combine MUSE and ALMA observations to map stellar kinematics and ionised and molecular gas properties. The jets are seen to drive galaxy-wide bi-conical turbulent outflows, reaching W80 = 1000-1300 km/s, in the ionised phase (traced via optical emission-lines), which also have increased electron densities compared to the quiescent gas. The turbulent gas is driven perpendicular to the jet axis and is escaping along the galaxy minor axis, reaching 7.5 kpc on both sides. Traced via CO(3-2) emission, the turbulent material in molecular gas phase is one-third as spatially extended and has 3 times lower velocity-dispersion as compared to ionised gas. The jets are seen to be strongly interacting with the interstellar medium (ISM) through enhanced ionised emission and disturbed/depleted molecular gas at the jet termini. We see further evidence for jet-induced feedback through significantly higher stellar velocity-dispersion aligned, and co-spatial with, the jet axis (<5 deg). We discuss possible negative and positive feedback scenarios arising due to the interaction of the low-power jets with the ISM in the context of recent jet-ISM interaction simulations, which qualitatively agree with our observations. We discuss how jet-induced feedback could be an important feedback mechanism even in bolometrically luminous 'radio-quiet' quasars.

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