标题： X射线中的超大质量黑洞风：SUBWAYS。 II. 中等红移风的哈勃空间望远镜紫外光谱学 显示英文标题

标题： Supermassive Black Hole Winds in X-rays: SUBWAYS. II. HST UV spectroscopy of winds at intermediate redshifts

摘要： 我们对21个活动星系核(AGN)中的电离外流进行了紫外光谱研究，观测使用了哈勃空间望远镜(HST)。 SUBWAYS样本的目标选择旨在探测本地塞弗特星系和高红移明亮类星体之间未充分研究的AGN参数空间。 我们的目标红移范围为0.1-0.4，光度(L_bol)为10^45-10^46 erg/s，并进行了大规模多波段观测。 在此，我们对紫外光谱进行建模，并寻找不同类型的AGN外流。 我们发现60%的目标显示出流出的H I吸收，而40%表现出通过C IV、N V或O VI吸收显示的电离外流。 这与本地塞弗特星系中观察到的电离外流发生率相当。 样本中的所有紫外吸收线相对较窄，外流速度可达-3300 km/s。 我们没有检测到X射线超快速外流(UFO)的紫外对应物，这很可能是由于它们过于电离。 然而，所有具有X射线UFO的SUBWAYS目标都显示出较低速度的紫外外流。 我们发现紫外离子的柱密度(N)与AGN的L_bol之间存在显著相关性，其中H I的N随L_bol增加而减少，而O VI的N随L_bol增加而增加。 这可能是光致电离效应，随着AGN光度的增加，风变得更电离，导致中性或低电离离子的吸收减少，而高电离离子的吸收增加。 此外，我们发现紫外离子的N随着其外流速度的增加而减少。 这可能由一种机械功率驱散紫外吸收介质来解释。 我们观察到的关系与多相AGN供能和反馈模拟一致，表明辐射和机械过程的组合同时起作用。 显示英文摘要

摘要： We present a UV spectroscopic study of ionized outflows in 21 active galactic nuclei (AGN), observed with the HST. The targets of the SUBWAYS sample were selected with the aim to probe the parameter space of the underexplored AGN between the local Seyfert galaxies and the luminous quasars at high redshifts. Our targets, spanning redshifts of 0.1-0.4 and bolometric luminosities (L_bol) of 10^45-10^46 erg/s, have been observed with a large multi-wavelength campaign. Here, we model the UV spectra and look for different types of AGN outflows. We find that 60% of our targets show a presence of outflowing H I absorption, while 40% exhibit ionized outflows seen as absorption by either C IV, N V, or O VI. This is comparable to the occurrence of ionized outflows seen in the local Seyfert galaxies. All UV absorption lines in the sample are relatively narrow, with outflow velocities reaching up to -3300 km/s. We did not detect any UV counterparts to the X-ray ultra-fast outflows (UFOs), most likely due to their being too highly ionized. However, all SUBWAYS targets with an X-ray UFO demonstrate the presence of UV outflows at lower velocities. We find significant correlations between the column density (N) of the UV ions and L_bol of the AGN, with N of H I decreasing with L_bol, while N of O VI is increasing with L_bol. This is likely to be a photoionization effect, where toward higher AGN luminosities, the wind becomes more ionized, resulting in less absorption by neutral or low-ionization ions and more absorption by high-ionization ions. In addition, we find that N of the UV ions decreases as their outflow velocity increases. This may be explained by a mechanical power that is evacuating the UV-absorbing medium. Our observed relations are consistent with multiphase AGN feeding and feedback simulations indicating that a combination of both radiative and mechanical processes are in play.