Studies of Seyfert Galaxies with High Spatial Resolutions

高空间分辨率的赛弗特星系研究

• 批准号: 8719207
• 负责人: Andrew Wilson
• 金额: $ 9万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-11-01 至 1991-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8719207&HistoricalAwards=false
• 关键词: Studies; Seyfert; Galaxies; Spatial; Resolutions

An investigation of the properties of Seyfert galaxies at scales of tens of lightyears to thousands of lightyears will be carried out. First, a program of direct imaging and spatially resolved spectroscopy of optical emission lines will be continued. The aims are to determine the ionization and kinematical structure of the gas, the morphology of the narrow line region and its relation to the jet-like radio continuum sources, and to isolate circumnuclear starbursts. These high resolution observations will mainly be made at Cerro Tololo Inter-American Observatory (CTIO) and on Mauna Kea, Hawaii. When possible, advantage will be taken of seeing compensating systems such as the Image Stabilizing Instrument System at Mauna Kea. Second, the profiles of several ion species will be determined to investigate correlations between velocity spread, critical density, ionization potential, and radius in active galaxies. Third, high resolution, diffraction limited, imaging observations will be made in the 8 - 13 micron band with a new array camera system developed at the National Aeronautics Space Administration Goddard Space Flight Center. Fourth, the properties of warm molecular gas in the circumnuclear environment will be probed by means of the 2.12 micron wavelength line of molecular hydrogen. These data and others will be confronted with spherically symmetric infall and wind outflow models of galaxies. The nature of the striking morphological similarity between the narrow line region and the radio continuum sources will be investigated. Models in which this connection represents partial beaming of the ionizing radiation along the radio axis will be explored. Lastly, the data will be used to perform a comprehensive investigation of circumnuclear starbursts in Seyfert galaxies.

Seyfert星系尺度性质的研究 几十光年到几千光年的距离 出去 首先，直接成像和空间分辨的程序 将继续光学发射谱线的光谱学。 的 目的是确定电离和运动学结构的 气体、窄线区域的形态及其 与喷流状无线电连续源的关系，并隔离 环核星暴 这些高分辨率的观测 将主要在托洛洛山美洲天文台进行 （CTIO）和夏威夷的莫纳克亚山。 在可能的情况下， 看到补偿系统，如图像， 莫纳克亚山的稳定仪表系统。 第二，配置文件 几种离子物种将被确定调查 速度分布，临界密度， 电离势和活动星系的半径。 三是高 分辨率，衍射限制，成像观测将是 在8 - 13微米波段与一个新的阵列相机系统 由美国国家航空航天局开发 戈达德太空飞行中心。 四、保暖性 环核环境中的分子气体将被探测， 分子氢的2.12微米波长线。 这些数据和其他数据将被球形地 星系的对称流入和风流出模型。 性质 这条窄线和 区域和无线电连续源将进行调查。 模型中，这种连接代表部分光束， 将探讨无线电轴沿着的电离辐射。 最后，这些数据将用于执行全面的 塞弗特星系环核星暴的研究。