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LAMOST Made Its Fifth Data Release

Jan 10, 2018     Email"> PrintText Size

On December 31, 2017, LAMOST made its fifth Data Release (DR5) to both domestic users and international partners, which includes all spectra obtained during the pilot survey and the first five years’ regular survey.  

In LAMOST DR5, 4154 plates were observed and a total number of 9.01 million spectra were released, which included 7.77 million high-quality spectra with SNR 10. Besides, a catalogue providing stellar parameters of 5.34 million stars was also released in this data set.  

DR5 has resulted in the largest public spectral set and stellar parameter catalogue worldwide at present. The huge data volume proves that LAMOST is indeed with the highest spectral acquisition rate in the world. 

Fig. 1 below shows the footprint of LAMOST pilot survey and the five years' regular survey.  

The progress of LAMOST survey and scientific research results attracted widespread concerns and interests of the international astronomical community. Up to now, there are 617 LAMOST users from 85 research institutes and universities from China, the United States, Germany, Belgium and other countries.

300 refereed papers have been published using LAMOST spectral data till now and 24 more are still under review. All of the studies show great advantage and potential of LAMOST to the world. 

LAMOST results in a final catalogue of 9 million spectra after its five-year regular survey, which is an exceedingly valuable resource for a variety of astronomical fields.  

With the obtained data, scientists create a Digital Galaxy for future research on the structure, formation and evolution of Milky Way and other galaxies. 


Fig.1. Footprint of the LAMOST pilot survey and the first five years' survey. (Image by NAOC) 


(Editor: LI Yuan)



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