论文标题
Lamost中分辨率光谱调查（Lamost-MRS）：科学目标和调查计划
LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS): Scientific goals and survey plan
论文作者
论文摘要
自2018年9月以来，Lamost使用明亮/灰色的夜晚开始了新的5年中分辨率光谱调查（MRS）。我们介绍了Lamost-MR的科学目标，并提出了对调查的几乎乐观策略。还提供了完整的足迹。自2018年以来，不仅进行了常规的中分辨率调查，而且还进行了时间域的光谱调查，并将在2023年结束。根据详细的调查计划，我们希望Lamost-MRS可以观察到约200万个恒星光谱，约为7500，并且限制了G = 15 mag的限制。此外，它还将提供大约20万颗恒星，并具有平均60个上的观测值，并限制了G〜14 mag的幅度。这些高质量的光谱将使大约20个元素丰度，旋转速度，发射线轮廓以及不确定性小于1 km/s的精确径向速度。有了这些数据，我们预计Lamost可以有效利用恒星物理学的科学，例如异国情调的二进制恒星，对多种类型的可变恒星等的详细观察，行星宿主星星，发射星云，开放簇，年轻的预序列恒星等。
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.
