An Investigation of Physical Factors that Determine Galaxy Structure Based upon a New Method of Quantitative Analysis.

基于定量分析的新方法研究决定星系结构的物理因素。

基本信息

批准号：
59065002
负责人：
KODAIRA Keiichi
金额：
$ 116.93万
依托单位：
National Astronomical Observatory
依托单位国家：
日本
项目类别：
Grant-in-Aid for Specially Promoted Research
财政年份：
1984
资助国家：
日本
起止时间：
1984 至 1988
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-59065002/
关键词：
Galaxies Quantitative Analysis Image Processing 宇宙論

项目摘要

The aim of the project is to understand what physical factors are responsible for the wide variety of galaxy structure on the basis of quantitative analyses of a large number of galaxy images. Results of this 5-year project are summarized as follows.1. Investigation of Galaxy Structure. We have found that (1) the number of physical factors that determine the global structure of galaxies is two, (2) the leading factor which is responsible for the wide variety of galaxian shape is the structure of the spheroidal component rather than that of the disk component, and (3) there is a well-bahaved correlation between the total luminosity of galaxies and the average phase-space density. The last correlation will ne a powerful tool to understand the mechanism of galaxy formation in the presence of dark matter. (4) Several problems related to the quantitative analyses have been studied in some detail. They include internal absorption, ultraviolet rediation, and peculiarity of galaxies, and image processing technique.2. Database of Galaxies A database has been constructed which includes two-dimensional luminosity distribution of about 800 galaxies. The detabase will be distributed on the world-wide basis to those who are interested in it.3. Astronomical Image Data Processing System. An efficient astronomical image data processing system has been developed on a dedicated superminicomputer with a variety of image I/O peripherals. A photographic plate scanning machine was introduced and has been successfully operated as an integral part of the system.

该项目的目的是了解哪些物理因素是根据大量星系图像的定量分析来造成各种星系结构的原因。这个5年项目的结果总结如下1。星系结构的研究。我们发现（1）确定星系全球结构的物理因素的数量是两个，（2）负责各种星系形状的主要因素是球体成分的结构，而不是磁盘成分的结构，并且（3）存在良好的银河液体和平均相位空间的亮度之间的良好相关性。最后一个相关将是一种强大的工具，可以理解在存在暗物质的情况下星系形成的机理。（4）已经详细研究了与定量分析有关的几个问题。它们包括内部吸收，紫外线修复和星系的特殊性以及图像处理技术2。星系数据库已经构建了数据库，其中包括约800个星系的二维光度分布。该取程将在全球范围内分发给对它感兴趣的人。3。天文图像数据处理系统。有效的天文图像数据处理系统已经在具有多种图像I/O外围设备的专用超级计算机上开发了。引入了摄影板扫描机，并已成功作为系统的组成部分运行。