Magellan-IMACS-IFU搜索核活动的动力驱动因素。I. Reduction Pipeline和Galaxy Catalog
A Magellan-IMACS-IFU Search for Dynamical Drivers of Nuclear Activity. I. Reduction Pipeline and Galaxy Catalog
摘要：
使用稻盛麦哲伦面积相机和光谱仪（IMACS）的积分场单元（IFU）的6.5米麦哲伦望远镜，我们设计了第一个统计上显着的调查电离气体和恒星的二维分布和运动学的中央千秒差距区域的一个匹配良好的样本塞弗特和不活跃的控制星系从斯隆数字巡天。该项目的目标是使用精细空间采样（0.2弧秒/像素）和大波长覆盖范围（4000- 7000 A），在中心区域寻找核活动的动力学触发点，在中心区域，活动星系核活动和动力学时标变得可以比较，确定和评估活动星系核驱动的外流对宿主星系的影响，并提供一个明确的样本，本地星系运动学与未来的三维运动学研究的高红移系统进行比较。在本文中，我们提供了第一个详细描述的程序，以减少和校准数据从IMACS-IFU在“长模式”，以获得二维地图的电离气体和恒星的分布和运动学。提出了样本选择标准，描述了观测策略，并给出了样本星系的地图，以及每个星系的观测特性和样本的整体观测特性的描述。
英文摘要：
Using the Inamori Magellan Areal Camera and Spectrograph (IMACS) integral-field unit (IFU) on the 6.5m Magellan telescope, we have designed the first statistically significant investigation of the two-dimensional distribution and kinematics of ionized gas and stars in the central kiloparsec regions of a well-matched sample of Seyfert and inactive control galaxies selected from the Sloan Digital Sky Survey. The goals of the project are to use the fine spatial sampling (0.2 arcsec/pixel) and large wavelength coverage (4000-7000A) of the IMACS-IFU to search for dynamical triggers of nuclear activity in the central region where active galactic nucleus (AGN) activity and dynamical timescales become comparable, to identify and assess the impact of AGN-driven outflows on the host galaxy and to provide a definitive sample of local galaxy kinematics for comparison with future three-dimensional kinematic studies of high-redshift systems. In this paper, we provide the first detailed description of the procedure to reduce and calibrate data from the IMACS-IFU in `long mode' to obtain two-dimensional maps of the distribution and kinematics of ionized gas and stars. The sample selection criteria are presented, observing strategy described and resulting maps of the sample galaxies presented along with a description of the observed properties of each galaxy and the overall observed properties of the sample.
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