The evolutionary state of AGN host galaxies - clues from 3D spectroscopy

我们建议进行一个全面的研究相对较近的星系托管活动星系核，通过空间分辨积分场光谱。我们的主要科学目标是：（i）解释活动星系核宿主星系的异常星族特性，特别是区分“关闭”和“复兴”的情况;（ii）将活动星系核宿主星系分为运动学上未受干扰的和受合并影响的两类，并为合并事件对低光度活动星系核的重要性建立坚实的统计基础;（iii）收集活动星系核驱动外流的证据，并估计其与这些星系演化的能量相关性。作为一项多边合作，我们已经集中参与了CALIFA的启动、规划和实施，现在我们正在寻求资金，以积极参与其生产阶段，并领导AGN宿主星系主题的科学开发。CALIFA在这一课题上的主要优势将是提供活动星系核重要样本的空间分辨光谱，以及许多正常、不活跃星系的相同质量的数据。我们还获得了AGN主机的其他独特数据集，这些数据集已经承诺为上面列出的科学问题提供新的见解。

We propose to conduct a comprehensive study of relatively nearby galaxies hosting Active Galactic Nuclei, by means of spatially resolved integral field spectroscopy. Our driving scientific aims are: (i) to explain the unusual stellar population properties of AGN host galaxies, in particular by discriminating between 'shutdown' and 'rejuvenation' scenarios; (ii) to classify AGN hosts into kinematically undisturbed vs. affected by mergers, and establish a solid statistical basis for the importance of merger events for low-luminosity AGN; (iii) to collect evidence for AGN-driven outflows, and estimate their energetic relevance for the evolution of these galaxies.For this endeavour we plan to take advantage of the international CALIFA project, a major legacy survey to observe 600 galaxies with integral field spectroscopy, just commencing at Calar Alto observatory. We were already centrally involved in initiating, planning, and implementing CALIFA as a multilateral collaboration, and we now seek for funding to actively participate in its production phase and lead the scientific exploitation for the topic of AGN host galaxies. The key advantage of CALIFA for this topic will be the availability of spatially resolved spectra for a significant sample of AGN together with data of identical quality for many normal, inactive galaxies. We also have secured other unique datasets of AGN hosts that already promise to provide new insights into the science questions listed above.