The Nearest High-Velocity Stars Revealed by LAMOST Data Release 1
  We report the discovery of 28 candidate high-velocity stars (HVSs) at
heliocentric distances of less than 3 kpc, based on the Large Sky Area
Multi-Object Fiber Spectroscopic Telescope (LAMOST) Data Release 1. Our sample
of HVS candidates covers a much broader color range than the equivalent ranges
discussed in previous studies and comprises the first and largest sample of
HVSs in the solar neighborhood. The sufficiently accurate observed and derived
parameters for all candidates allow us to ascertain their nature as genuine
HVSs, while a subset of 12 objects represents the most promising candidates.
Our results also highlight the great potential of discovering statistically
large numbers of HVSs of different spectral types in LAMOST survey data. This
will ultimately enable us to achieve a better understanding of the nature of
Galactic HVSs and their ejection mechanisms, and to constrain the structure of
the Galaxy.
