| 大规模天文光谱巡天 |
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| 引用本文： | 赵永恒.大规模天文光谱巡天[J].中国科学:物理学 力学 天文学,2014(10):1041-1048. |
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| 作者姓名： | 赵永恒 |
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| 作者单位： | 中国科学院国家天文台; |
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| 基金项目： | 国家自然科学基金重点项目资助(批准号:909016028) |
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| 摘 要： | 21世纪是光学天文迅速发展的阶段,主要是得益于多个天文大规模巡天项目的开展(2dF,6dF,RAVE,SDSS,LAMOST和Gaia等).这些大规模光学巡天项目主要是光学光谱巡天,目的是获取数以十万、百万甚至千万计天体的光谱.本文着重介绍了国际上的SDSS项目和我国自主创新的LAMOST望远镜以及所取得的光谱巡天成果.LAMOST是一种新型的反射施密特望远镜,突破了大规模光谱巡天所需要的大视场兼备大口径望远镜的技术瓶颈,成为世界上天体光谱获取率最高的望远镜.已经发布的LAMOST光谱数据集DR1中有200万条天体光谱,其中有170万条恒星光谱和包括108万条恒星光谱的参数星表.
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| 关 键 词： | 天文 巡天 光谱 宇宙学 银河系 |
Large-scale astronomical spectroscopic surveys |
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| ZHAO YongHeng.Large-scale astronomical spectroscopic surveys[J].Scientia Sinica Pysica,Mechanica & Astronomica,2014(10):1041-1048. |
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| Authors: | ZHAO YongHeng |
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| Institution: | ZHAO YongHeng( National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China) |
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| Abstract: | Optical astronomy has been developing very fast in the 21 century. There are many large-scale astronomical sky surveys, such as 2dF, 6dF, RAVE, SDSS, LAMOST and Gaia. The progress of astronomical spectroscopic survey in the world is reviewed. In this paper the SDSS in USA and LAMOST in China are introduced as two examples. LAMOST is a special reflecting Schmidt telescope. LAMOST breaks through the bottleneck of the large scale spectroscopic survey observation with both large aperture and wide field of view. LAMOST is the telescope of the highest spectrum acquiring rate. From October 2011 to June 2013, LAMOST has obtained more than 2 million spectra of celestial objects. There are 1.7 million spectra of stars, in which the stellar parameters of more than 1 million stars are obtained. |
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| Keywords: | astronomy sky survey spectroscopy cosmology the Galaxy |
| 本文献已被 CNKI 维普 等数据库收录！ |
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