摘要:
大天区面积多目标光纤光谱天文望远镜(LAMOST,又称郭守敬望远镜)是一台新型准中星仪式反射施密特望远镜。其有效口径4 m,视场20平方度,配备了16台摄谱仪和4000根光纤,可同时获取至多4000个天体的光谱。光谱覆盖为370—910 nm,分辨率为1800。为期5年的LAMOST银河系大规模恒星光谱巡天计划已于2012年秋启动,计划获取超过700万条恒星光谱,截至2014年6月已获得超过300万条光谱。文章简要回顾了银河系研究的重要性和现状,介绍了LAMOST银河系光谱巡天计划的科学意义和目标,数据采集、处理和分析进展以及已获得的初步科研成果,并对LAMOST银河系光谱巡天计划的未来进行了展望。
Abstract:
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST, al-so named the Guo Shou-Jing Telescope) is an innovative quasi-median reflective Schmidt tele-scope with an effective aperture of 4 m. It is equipped with 16 spectrographs fed by 4000 optical fi-bers distributed in a field of view of 20 sq.deg. The spectral range covers the optical wavelengths from 370—910 nm at a resolving power of 1800. The LAMOST Galactic survey was initiated in the fall of 2012. It is expected to collect over 7 million spectra over a five-year period. So far, over 3 million spectra have been collected. In this article, I will briefly review the importance and cur-rent status of studies on our Milky Way Galaxy, and then present an overview of the scientific moti-vation, target selection, survey progress, and data collection and reduction, as well as the early sci-entific results and future prospects of the surveys.
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