Astronomy by using the data of Sloan Digital Sky Survey

使用斯隆数字巡天数据进行天文学

基本信息

批准号：
11694069
负责人：
IKEUCHI Satoru
金额：
$ 4.22万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

项目摘要

The Sloan Digital Sky Survey (SDSS) Project, which are proceeded by Japan-US collaboration, has began the commissioning observations from 1999 and finished the survey of celestial equator in 2001. In this commissioning observations, many important astronomical phenomina have been obtained such as the discovery of the farest quasar at z=6.28, the discovery of more than ten thousand quasars . including those with redshifts higher than 5, the measurement of redshifts of galaxies more than one hundred thousands, the study of fundamental structure of our galaxy by using one million stars and the confiramtion of the sequnceof low temperature stars. These remarkable results are already published by more than thirty papers. Especially, by unique observations as five-color photometry more than ten quasars with redshifts higher than 5 have beeb discovered, and from this result we can make clear the number evolution of quasars at early universe. As for galaxies, we got homogeneous photometric data of ten thousand galaxies and now such statistical studies as luminosity function, spatial distribution, number evolution and type classification are exploring. A part of these data are already released for further studies and astronomers in the world are attempting much detailed observations of interesting objects by using large telescopes. The five-color photometry is possible only by SDSS, and it will bring much more important data in the next survey of northern hemisphere. The Japan Promotion Group (JPG) of SDSS have contributed to the maintenance of detectors, the data acquision and the data analysis, and they aapeared in all papers as co-authors.10

由日本 - 美国协作进行的Sloan Digital Sky调查（SDSS）项目从1999年开始开始进行调试观察，并于2001年完成了对天体赤道的调查。在这种调试观察中，已经获得了许多重要的天文学现象，例如发现最远的Quasar在Z = 6.28的发现，发现了更多的Quassars。包括红移高于5的那些，对星系的红移测量超过一十万，使用一百万颗恒星对我们星系的基本结构进行研究以及对低温恒星Sequnceof的认可。这些显着的结果已经发表了三十多篇论文。尤其是，通过发现的五色光度法超过5个类星体，红移高于5个Beeb，从此结果，我们可以清楚地清楚地位在早期宇宙中类星体的数量演变。至于星系，我们获得了一万个星系的同质光度数据，现在正在探索统计研究，如光度函数，空间分布，数量演化和类型分类。这些数据的一部分已经发布用于进一步的研究，世界上天文学家正在尝试通过使用大型望远镜来详细观察有趣的对象。只有SDSS才能使用五色光度法，它将在下一次对北半球的调查中带来更重要的数据。 SDS的日本促销小组（JPG）有助于维持探测器，数据采用和数据分析，并且在所有论文中都以合着者为名。10