arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1809.04858astro-ph.GA
收藏

SUPER z~2活动星系核电离外流的无偏研究:综述和样品表征

SUPER I. Toward an unbiased study of ionized outflows in z~2 active galactic nuclei: survey overview and sample characterization

C. Circosta, V. Mainieri, P. Padovani, G. Lanzuisi, M. Salvato, C. M. Harrison, D. Kakkad, A. Puglisi, G. Vietri, G. Zamorani, C. Cicone, B. Husemann, C. Vignal… 展开作者

C. Circosta, V. Mainieri, P. Padovani, G. Lanzuisi, M. Salvato, C. M. Harrison, D. Kakkad, A. Puglisi, G. Vietri, G. Zamorani, C. Cicone, B. Husemann, C. Vignali, B. Balmaverde, M. Bischetti, M. Brusa, A. Bongiorno, S. Carniani, F. Civano, A. Comastri, G. Cresci, C. Feruglio, F. Fiore, S. Fotopoulou, A. Karim, A. Lamastra, B. Magnelli, F. Mannucci, A. Marconi, A. Merloni, H. Netzer, M. Perna, E. Piconcelli, G. Rodighiero, E. Schinnerer, M. Schramm, A. Schulze, J. Silverman, L. Zappacosta

摘要:

星系形成的理论模型表明,一个活动星系核(AGN)的存在需要通过反馈机制来调节其宿主星系的生长,例如AGN驱动的外流。虽然这种外流在低红移和高红移都很常见,但仍然缺少一个全面的图像。到目前为止,对星系集合的峰值时期(1<z<3)的探索还很有限,目前在这个红移范围内的观测大多局限于很有可能处于流出阶段的目标。本文介绍了欧洲南方天文台正在进行的VLT/SINFONI大型计划SUPER(a SINFONI Survey for Unveiling the Physics and Effect of Radiative Feedback)。SUPER将在z~2处对39个X射线AGN的相当大的盲选样本进行电离流出的首次系统研究,由于自适应光学辅助IFU观察,该样本达到了高空间分辨率(~2 kpc)。通过[OIII]的宽分量和Ha发射线的窄分量,将绘制出宿主星系中的外流形态和恒星形成。我们的调查的主要目的是推断流出对正在进行的恒星形成的影响,并将流出属性与一些活动星系核和宿主星系的属性联系起来。我们在这里描述调查的特点和目标,以及目标样本的选择。此外,我们提出了其多波长特性的完整表征:我们通过紫外-远红外测光的光谱能量分布拟合来测量恒星质量(4x10^9-2x10^11 Msun),恒星形成率(25-680 Msun yr^-1)和活动星系核的辐射热光度(2x10^44-8x10^47 erg s^-1),以及通过X射线光谱分析得到的暗柱密度(<2x10^24 cm^-2)和2-10 keV的光度(2x10^43-6x10^45 erg s^-1)。最后,我们根据射电和远红外辐射将活动星系核分为喷流和非喷流两类。

英文摘要:

Theoretical models of galaxy formation suggest that the presence of an active galactic nucleus (AGN) is required to regulate the growth of its host galaxy through feedback mechanisms, produced by e.g. AGN-driven outflows. Although such outflows are common both at low and high redshift, a comprehensive picture is still missing. The peak epoch of galaxy assembly (1<z<3) has been poorly explored so far, and current observations in this redshift range are mostly limited to targets with high chances to be in an outflowing phase. This paper introduces SUPER (a SINFONI Survey for Unveiling the Physics and Effect of Radiative feedback), an ongoing ESO's VLT/SINFONI Large Programme. SUPER will perform the first systematic investigation of ionized outflows in a sizeable and blindly-selected sample of 39 X-ray AGN at z~2, which reaches high spatial resolutions (~2 kpc) thanks to the adaptive optics-assisted IFU observations. The outflow morphology and star formation in the host galaxy will be mapped through the broad component of [OIII] and the narrow component of Ha emission lines. The main aim of our survey is to infer the impact of outflows on the on-going star formation and to link the outflow properties to a number of AGN and host galaxy properties. We describe here the survey characteristics and goals, as well as the selection of the target sample. Moreover, we present a full characterization of its multi-wavelength properties: we measure, via spectral energy distribution fitting of UV-to-FIR photometry, stellar masses (4x10^9-2x10^11 Msun), star formation rates (25-680 Msun yr^-1) and AGN bolometric luminosities (2x10^44-8x10^47 erg s^-1), along with obscuring column densities (<2x10^24 cm^-2) and 2-10 keV luminosities (2x10^43-6x10^45 erg s^-1) derived through X-ray spectral analysis. Finally, we classify our AGN as jetted or non-jetted according to their radio and FIR emission.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑