Study of the structure and evolution of galaxies based on infrared observations of stars at the latest stage of their evolution

基于恒星演化最新阶段的红外观测研究星系的结构和演化

基本信息

批准号：
04402002
负责人：
TSUJI Takashi
金额：
$ 24.19万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (A)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1994
项目状态：
已结题

项目摘要

The purpose of the present research is to clarify the structure and evolution of galaxies on the basis of infrared observations of stars at the latest stage of their evolution. The rapid developments of the infrared array detectors in recent years made it possible to study cool stars, which can be used as probes to clarify the basic structure of galaxies.For this purpose, we first developed infrared camera and spectrograph by the use of a large format infrared array detector PtSi 1040X1040. As the control system, we designed and manufactured a high speed and high precision AD converter based on the Messia (a CCD driving system developed at the National Astronomical Observatory). Our new system can be used for general purpose. We have developed new instruments equipped with a large format infrared array to be drived by our new control system :1) Wide field infrared camera to be used with Kiso 105 cm Schmidt telescope.2) Infrared spectrograph to be used at the coude focus of the 188cm reflector at the Okayama Astrophysical Observatory.At present, the noise level of the detector is somewhat higher than expected, and we are doing our last efforts to improve this together with adjustments of the hard and soft wares of our system.We also developed a computer system to analyze the IRAS database, which is the baic data for our present study. This data analysis system is also important for analyzing the data to be obtained by the new insruments mentioned above and by the ISO to be lauched this autumn. We further started to develope algorithm and softwares to analyze the data to be obtained by the ISO.For example, we have examined in detail the image reconstruction algorithm to be used for detecting faint images and this is the basis of our search for primeval galaxies in the infrared.

本研究的目的是根据恒星的最新阶段在进化的最新阶段阐明星系的结构和演变。近年来，红外阵列检测器的快速发展使研究酷星可以用作探针来阐明星系的基本结构。为此，我们首先使用大型格式红外阵列检测器PTSI 1040x1040开发了红外摄像头和光谱仪。作为控制系统，我们根据弥赛亚（国家天文天文台开发的CCD驾驶系统）设计和制造了高速和高精度广告转换器。我们的新系统可用于通用。我们已经开发了新的仪器，该仪器配备了大型红外阵列，我们的新控制系统：1）与KISO 105 cm Schmidt望远镜一起使用的田间现场红外摄像机。2）红外光谱仪可用于在188厘米的Coude焦点上使用的红外光谱仪，而在Okeama天文学范围内，我们的噪音更高。通过调整系统的硬件和软件的调整，我们还开发了一个计算机系统来分析IRAS数据库，IRAS数据库是我们本研究的BAIC数据。该数据分析系统对于分析上面提到的新intoments和ISO将在今年秋天获得的ISO获得的数据也很重要。我们进一步开始开发算法和软件来分析要通过ISO获得的数据。