ABSTRACT We have developed a new method for spectral analysis of binaries. Our successfully identifies double-lined spectroscopic binary (SB2) candidates from high-resolution Gaia-ESO spectra. Compared to the commonly used cross-correlation function analysis, it works binaries with rapidly rotating components. test our on synthetic and observational spectra BAFG stars vsin i 1 $330~\, {\rm km}\...

This paper reports 209 O-type stars found with LAMOST. All 135 new discovered so far LAMOST are given. Among them, 94 firstly presented in this sample. There 1 Iafpe star, 5 Onfp stars, 12 Oe Ofc 3 ON 16 double-lined spectroscopic binaries, and 33 single-lined binaries. determined based on low-resolution spectra (R ~ 1800), their median-resolution (R~7500) as supplements.