Large Sky Area Multi-Object Fiber Spectroscopic Telescope
DATA RELEASE 8 v1.1
2011.10.24 - 2020.05.27
v1.0   v0
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Medium Resolution Search
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LAMOST DR8 TOTAL
Observed Plates: 5,207
Total Spectra: 10,927,505
Star: 10,351,254
Star (SNg or i > 10): 9,385,159
Galaxy: 225,475
QSO: 72,010
Unknown: 278,766
AFGK Stellar Parameters: 6,684,415
M Giants,Dwarfs and Subdwarfs: 770,575
Line indices of A Type Stars:625,451
WD Star Catalog:15,616
CV Star Catalog:465
Stellar Population Synthesis of Galaxies:21,719
Emission Line Features of QSOs:17,825
Low Resolution
Observed
Plates
Total Spectra Star STAR
(SNg or i > 10)
Galaxy QSO Unknown AFGK Stellar
Parameters
M Giants,Dwarfs
and Subdwarfs
Line indices of
A Type Stars
WD Star
Catalog
CV Star
Catalog
Stellar Population Synthesis
of Galaxies
Emission Line Features
of QSOs
Pilot survey
(20111024-20120617)
404 922,414 871,461 682,234 9,470 1,547 39,936 417,753 87,107 65,397 1,547 32 12 693
First year survey
(20120928-20130603)
812 1,663,014 1,587,141 1,391,689 13,856 6,264 55,753 934,247 67,845 79,965 1,468 59 159 2,327
Second year survey
(20130910-20140603)
732 1,616,311 1,538,998 1,425,387 31,933 6,472 38,908 1,125,840 82,244 77,458 1,308 41 2,438 2,827
Third year survey
(20140910-20150530)
738 1,654,408 1,582,446 1,472,981 27,512 9,973 34,477 1,103,981 109,791 88,596 1,832 55 2,579 2,306
Forth year survey
(20150912-20160602)
776 1,680,205 1,589,023 1,481,254 41,653 15,098 34,431 1,100,576 108,186 103,111 2,344 86 4,434 2,075
Fifth year survey
(20160909-20170616)
693 1,355,748 1,268,674 1,150,074 37,116 15,286 34,672 790,723 105,180 89,971 2,706 65 5,075 5,174
Sixth year survey
(20170919-20180518)
418 854,437 806,975 748,571 20,720 7,802 18,940 513,531 77,008 52,087 1,744 60 2,653 1,209
Seventh year survey
(20181005-20190608)
349 646,881 601,948 560,124 21,833 4,189 18,911 370,861 71,432 41,153 1,580 26 2,418 473
Eighth year survey
(20191023-20200527)
285 534,087 504,588 472,845 21,382 5,379 2,738 326,903 61,782 27,713 1,087 41 1,951 741
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Medium Resolution
Medium-resolution non time-domain data Medium-resolution time-domain data Total
Total spectra 1,465,789 4,510,193 5,975,982
Spectra(SN>10) 959,724 2,613,860 3,573,584
Star parameter 717,571 512,736 1,230,307
Standard acknowledgement

Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope LAMOST) is a National Major Scientific Project built by the Chinese Academy of Sciences. Funding for the project has been provided by the National Development and Reform Commission. LAMOST is operated and managed by the National Astronomical Observatories, Chinese Academy of Sciences.