Large Sky Area Multi-Object Fiber Spectroscopic Telescope
DATA RELEASE 12 v1.0
2023.09.18 - 2024.06.03
v0
Low Resolution Search Medium Resolution Search Catalogue Download FTP Download
 

Low Resolution

Observed Plates: 6,605
Total Spectra: 12,602,390
Star: 12,231,890
Galaxy: 281,059
QSO: 89,441
AFGK Stellar Parameters: 8,370,041
M Giants,Dwarfs and Subdwarfs: 988,254
Line indices of A Type Stars: 734,010
WD Star Catalog: 18,293
CV Star Catalog: 624
Galaxy Population Synthesis Catalog: 28,946
Qso Emission line Feature Catalog: 23,369
 
  Observed
Plates		 Total Spectra Star Galaxy QSO AFGK Stellar
Parameters		 M Giants,Dwarfs
and Subdwarfs		 Line indices of
A Type Stars		 WD Star
Catalog		 CV Star
Catalog		 Galaxy Population
Synthesis Catalog		 Qso Emission line
Feature Catalog
Pilot survey
(20111024-20120617)
 404 863,290 852,440 9,295 1,555 417,412 84,911 62,396 1,531 34 12 693
First year survey
(20120928-20130603)
 812 1,558,607 1,538,572 13,783 6,252 915,919 65,593 76,967 1,428 58 159 2,325
Second year survey
(20130910-20140603)
 732 1,536,249 1,498,250 31,588 6,411 1,113,825 80,379 74,162 1,275 48 2,437 2,822
Third year survey
(20140910-20150530)
 738 1,567,912 1,530,748 27,238 9,926 1,093,273 108,519 83,967 1,818 58 2,578 2,304
Forth year survey
(20150912-20160602)
 776 1,563,927 1,507,407 41,528 14,992 1,069,608 107,172 94,587 2,303 97 4,428 2,069
Fifth year survey
(20160909-20170616)
 693 1,227,584 1,176,131 36,506 14,947 802,473 105,277 75,139 2,594 65 4,998 5,100
Sixth year survey
(20170919-20180518)
 418 790,992 762,560 20,684 7,748 532,246 77,698 44,239 1,723 62 2,653 1,209
Seventh year survey
(20181005-20190608)
 349 605,255 579,355 21,758 4,142 407,885 70,349 36,136 1,762 28 2,418 470
Eighth year survey
(20191023-20200527)
 285 514,513 487,965 21,206 5,342 351,394 60,252 26,774 1,080 41 1,951 737
Ninth year survey
(20200918-20210612)
 326 572,195 551,167 16,861 4,167 394,316 62,596 29,325 768 32 2,047 496
Tenth year survey
(20201029-20220602)
 390 634,712 607,288 22,940 4,484 444,425 62,726 28,149 767 31 3,559 379
Eleventh year survey
(20221007-20230615)
 363 4980,81 480,863 14,179 3,039 356,089 40,625 29,657 452 18 1,540 533
Twelfth year survey
(20230918-20240603)
 319 669,073 659,144 3,493 6,436 471,176 62,159 72,512 792 52 166 4,232

Medium Resolution

  Medium-resolution non time-domain data Medium-resolution time-domain data Total
Total spectra 3,365,641 12,110,344 15,475,985
Star parameter 1,641,907 1,584,569 3,226,476

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.