LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS): Scientific goals and survey plan
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.
Keywords
Cite
@article{arxiv.2005.07210,
title = {LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS): Scientific goals and survey plan},
author = {Chao Liu and Jianning Fu and Jianrong Shi and Hong Wu and Zhanwen Han and Li Chen and Subo Dong and Yongheng Zhao and Jian-Jun Chen and Haotong Zhang and Zhong-Rui Bai and Xuefei Chen and Wenyuan Cui and Bing Du and Chih-Hao Hsia and Deng-Kai Jiang and Jinliang Hou and Wen Hou and Haining Li and Jiao Li and Lifang Li and Jiaming Liu and Jifeng Liu and A-Li Luo and Juan-Juan Ren and Hai-Jun Tian and Hao Tian and Jia-Xin Wang and Chao-Jian Wu and Ji-Wei Xie and Hong-Liang Yan and Fan Yang and Jincheng Yu and Bo Zhang and Huawei Zhang and Li-Yun Zhang and Wei Zhang and Gang Zhao and Jing Zhong and Weikai Zong and Fang Zuo},
journal= {arXiv preprint arXiv:2005.07210},
year = {2020}
}
Comments
25 pages, 10 figues. Submitted to Reseach in Astronomy and Astrophysics