Phase \RNum{2} of the LAMOST-{\sl Kepler/K}2 survey (LK-MRS), initiated in
2018, aims at collecting medium-resolution spectra (R∼7,500; hereafter
MRS) for more than 50,000 stars with multiple visits (∼60 epochs) over a
period of 5 years (2018 September to 2023 June). We selected 20 footprints
distributed across the {\sl Kepler} field and six {\sl K}2 campaigns, with each
plate containing a number of stars ranging from ∼2,000 to ∼3,000.
During the first year of observations, the LK-MRS has already collected
∼280,000 and ∼369,000 high-quality spectra in the blue and red
wavelength range, respectively. The atmospheric parameters and radial
velocities for ∼259,000 spectra of 21,053 targets were successfully
calculated by the LASP pipeline. The internal uncertainties for the effective
temperature, surface gravity, metallicity, and radial velocity are found to be
100\,K, 0.15\,dex, 0.09\,dex, and 1.00\,km\,s−1, respectively. We
found 14,997, 20,091, and 1,514 stars in common with the targets from the
LAMOST low-resolution survey (LRS), GAIA and APOGEE, respectively,
corresponding to a fraction of ∼70%, ∼95% and ∼7.2%. In
general, the parameters derived from LK-MRS spectra are consistent with those
obtained from the LRS and APOGEE spectra, but the scatter increases as the
surface gravity decreases when comparing with the measurements from APOGEE. A
large discrepancy is found with the GAIA values of the effective temperature.
The comparisons of radial velocities of LK-MRS to GAIA and LK-MRS to APOGEE
nearly follow an Gaussian distribution with a mean μ∼1.10 and
0.73\,km\,s−1, respectively.Comment: 24 pages, 15 figures, 4 tables, ApJS, accepte