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Data Release 12 is the final data release of the SDSS-III, containing all SDSS observations. The massive spectra can not only be used for research of the structure and evolution of the Galaxy but also for multi-waveband identification. In addition, the spectra are a ideal sample for data mining for rare and special objects like white dwarf main-sequence star. WDMS consists of a white dwarf primary...
Cataclysmic variable stars (CVs) are used to study evolutionary theories especially models for close binary stars. The further research of CVs is constrained by the number of samples especially spectroscopic samples since CVs is a kind of rare and special celestial objects. LAMOST-DR2 is the second data release of Guoshoujing telescope, which provides an unprecedented opportunity to search for CVs...
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