LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS): Scientific goals and survey plan

Chao Liu; Jianning Fu; Jianrong Shi; Hong Wu; Zhanwen Han; Li Chen; Subo Dong; Yongheng Zhao; Jian-Jun Chen; Haotong Zhang; Zhong-Rui Bai; Xuefei Chen; Wenyuan Cui; Bing Du; Chih-Hao Hsia; Deng-Kai Jiang; Jinliang Hou; Wen Hou; Haining Li; Jiao Li; Lifang Li; Jiaming Liu; Jifeng Liu; A-Li Luo; Juan-Juan Ren; Hai-Jun Tian; Hao Tian; Jia-Xin Wang; Chao-Jian Wu; Ji-Wei Xie; Hong-Liang Yan; Fan Yang; Jincheng Yu; Bo Zhang; Huawei Zhang; Li-Yun Zhang; Wei Zhang; Gang Zhao; Jing Zhong; Weikai Zong; Fang Zuo

arXiv · 2005.07210

LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS): Scientific goals and survey plan

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Abstract

Since September 2018, LAMOST starts a new 5-year medium-resolution spectroscopic survey (MRS) using bright/gray nights. We present the scientific goals of LAMOST-MRS and propose a near optimistic strategy of the survey. A complete footprint is also provided. Not only the regular medium-resolution survey, but also a time-domain spectroscopic survey is being conducted since 2018 and will be end in 2023. According to the detailed survey plan, we expect that LAMOST-MRS can observe about 2 million stellar spectra with ~7500 and limiting magnitude of around G=15 mag. Moreover, it will also provide about 200 thousand stars with averagely 60-epoch observations and limiting magnitude of G~14 mag. These high quality spectra will give around 20 elemental abundances, rotational velocities, emission line profiles as well as precise radial velocity with uncertainty less than 1 km/s. With these data, we expect that LAMOST can effectively leverage sciences on stellar physics, e.g. exotic binary stars, detailed observation of many types of variable stars etc., planet host stars, emission nebulae, open clusters, young pre-main-sequence stars etc.

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Chao Liu, Jianning Fu, Jianrong Shi, Hong Wu, Zhanwen Han, Li Chen, Subo Dong, Yongheng Zhao, Jian-Jun Chen, Haotong Zhang, Zhong-Rui Bai, Xuefei Chen, Wenyuan Cui, Bing Du, Chih-Hao Hsia, Deng-Kai Jiang, Jinliang Hou, Wen Hou, Haining Li, Jiao Li, Lifang Li, Jiaming Liu, Jifeng Liu, A-Li Luo, Juan-Juan Ren, Hai-Jun Tian, Hao Tian, Jia-Xin Wang, Chao-Jian Wu, Ji-Wei Xie, Hong-Liang Yan, Fan Yang, Jincheng Yu, Bo Zhang, Huawei Zhang, Li-Yun Zhang, Wei Zhang, Gang Zhao, Jing Zhong, Weikai Zong, Fang Zuo. 2020-05-14. LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS): Scientific goals and survey plan. https://arxiv.org/abs/2005.07210

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