COSMOLOGICAL TESTS AND STUDIES OF GALAXY FORMATION

宇宙学测试和星系形成研究

基本信息

批准号：
13640265
负责人：
FUKUGITA Masataka
金额：
$ 1.6万
依托单位：
UNIVERSITY OF TOKYO
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

项目摘要

The research carried out in FY2001-2002 is divided into two parts. One is science analyzes of the observation performed in the Sloan Digital Sky Survey (SDSS) and the other is studies of cosmology using data from SDSS and others. I have been heavily engaged in the construction of the SDSS instruments for 8 years till Year 2000, when the production observation was started. The project is now ripe, and it is the time to obtain scientific results. I have spent a lot of time for this research activity with American and German colleagues, as well as those at ICRR. The research includes (1) quasar astronomy (5 papers were published in the two years period), (2) galactic astronomy (12 papers), (3) large-scale structure of the Universe (6 papers), (4) Galactic dynamics from the distribution of stars (1 paper), and (5) distribution of asteroids (1 paper). Besides this research activity, we have published 4 papers of technical nature concerning the Project - photometric calibration and spectrosc … More opic target selection. The primary goal of the current SDSS research is to present astronomical results ; we have done very little for considerations about physical meanings of those astronomical results. In June 2001, we have released the primary data with preliminary calibration and compilation for the public use. An explanation about the science contemplated in the SDSS is published as Sky Server in the web-site.I have been carrying out estimations of star formation rates and heavy element abundances for the nearby Universe for the purpose to constrain galaxy formation model using the SDSS data. The work, however, has not been completed yet. Another project I had contemplated is to conduct Cosmological Tests of the standard cosmology. There was great progress owing to the WMAP data release on this aspect. I published one overview paper. Yet another paper was published which discusses the epoch of galaxy formation in relation to the WMAP results. Work has also been made to clarify the meaning of Super-Kamiokande results of cosmic neutrino observations on the evolution of galaxies. Furthermore, I am continuing research for tests of the CDM model of galaxy formation employing large-scale cosmic simulations : one paper concerning the probability distribution function was completed and submitted. This work will continue further.As a whole I authored 37 papers altogether in the last two years. On the other hand, I admit that I could satisfy the research goal set two year ago only by 30%, which is quite a low fraction. Less

2002财年在2002财年进行的研究分为两部分。一种是对在斯隆数字天空调查（SDSS）中进行的观察的科学分析，另一种是使用SDSS和其他数据的数据研究宇宙学。直到2000年开始生产观察，我一直在大量工作8年。该项目现在已经成熟了，现在是获得科学结果的时候了。我花了很多时间在美国和德国同事以及ICRR的研究活动上进行这项研究活动。该研究包括（1）类星天文学（在两年期间发表了5篇论文），（2）银河天文学（12篇论文），（3）宇宙的大规模结构（6篇论文），（4）来自星星分布的银河系动态（1纸）（1纸）和（5）小三角（1纸）（1纸）。除了这项研究活动外，我们还发表了有关该项目的技术性质的4篇论文 - 光度校准和光谱……更多的光学目标选择。当前SDSS研究的主要目标是提出天文学结果。对于这些天文学结果的物理含义，我们几乎没有做任何事情。 2001年6月，我们发布了主要数据，并进行了初步校准和汇编供公众使用。关于SDSS中考虑的科学的解释是在Web站点中以Sky Server的形式发表的。我一直在对附近宇宙的恒星形成率和沉重的元素丰度进行估算，目的是使用SDSS数据来限制星系形成模型。但是，这项工作尚未完成。我考虑的另一个项目是对标准宇宙学进行宇宙学测试。由于WMAP数据发布在这方面，取得了很大的进步。我发表了一篇概述论文。还有另一篇论文发表了，讨论了与WMAP结果有关的星系形成时期。还已经做出了阐明宇宙神经元观察结果对星系进化的超级kamiokande结果的含义。此外，我正在继续研究采用大规模宇宙模拟的星系组的CDM模型的测试：有关概率分布函数的一篇论文已完成并提交。这项工作将继续延续。作为整体，我在过去两年中撰写了37篇论文。另一方面，我承认我只能在两年前就可以满足研究目标的满足，这是很少的。较少的