LAMOST光谱巡天第七次数据发布第一版

LAMOST第七年巡天数据发布V1版（LAMOST DR7 v1）包括先导巡天及前七年正式巡天的光谱数据，以及2017年9月-2019年6月期间的中分辨率光谱。DR7共包括4926个观测天区。发布低分辨率光谱总数10608416条，其中高质量光谱数（S/N>10）8821089条。中分辨率非时域光谱数据1010666条，其中高质量光谱数（S/N>10）671300条，中分辨率时域数据2878717条，其中高质量光谱数（S/N>10）1609930条。其中还包括一个6199917组恒星光谱参数星表。

The Seventh Data Release Version 1 of LAMOST (LAMOST DR7 v1) encompasses spectroscopic data from the pilot survey and the first seven years of the formal survey campaign, as well as medium-resolution spectroscopic data acquired between September 2017 and June 2019. DR7 covers a total of 4926 observed fields. The total number of released low-resolution spectra is 10,608,416, among which 8,821,089 are high-quality spectra with a signal-to-noise ratio (S/N) > 10. For medium-resolution non-time-domain spectroscopic data, there are 1,010,666 spectra, with 671,300 high-quality ones (S/N > 10). For medium-resolution time-domain spectroscopic data, there are 2,878,717 spectra, among which 1,609,930 are high-quality spectra (S/N > 10). Additionally, this data release also contains a stellar spectral parameter catalog with 6,199,917 entries.