  Magnetic chemically peculiar (mCP) stars are important to astrophysics
because their complex atmospheres lend themselves perfectly to the
investigation of the interplay between such diverse phenomena as atomic
diffusion, magnetic fields, and stellar rotation. The present work is aimed at
identifying new mCP stars using spectra collected by the Large Sky Area
Multi-Object Fiber Spectroscopic Telescope (LAMOST). Suitable candidates were
selected by searching LAMOST DR4 spectra for the presence of the characteristic
5200A flux depression. Spectral classification was carried out with a modified
version of the MKCLASS code and the accuracy of the classifications was
estimated by comparison with results from manual classification and the
literature. Using parallax data and photometry from Gaia DR2, we investigated
the space distribution of our sample stars and their properties in the
colour-magnitude diagram. Our final sample consists of 1002 mCP stars, most of
which are new discoveries (only 59 previously known). Traditional mCP star
peculiarities have been identified in all but 36 stars, highlighting the
efficiency of the code's peculiarity identification capabilities. The derived
temperature and peculiarity types are in agreement with manually derived
classifications and the literature. Our sample stars are between 100 Myr and 1
Gyr old, with the majority having masses between 2M(Sun) and 3M(Sun). Our
results could be considered as strong evidence for an inhomogeneous age
distribution among low-mass (M < 3M(Sun)) mCP stars. We identified several
astrophysically interesting objects: two mCP stars have distances and
kinematical properties in agreement with halo stars; an eclipsing binary system
hosting an mCP star component; and an SB2 system likely comprising of an mCP
star and a supergiant component.

Solar and Stellar Astrophysics;Instrumentation and Methods for Astrophysics