Korean VLBI Network Calibrator Survey (KVNCS): 1. Source Catalog Of KVN
  Single Dish Flux Density Measurement In The K And Q Bands
  We present the catalog of the KVN Calibrator Survey (KVNCS). This first part
of the KVNCS is a single dish radio survey conducted at 22 (K band) and 43 GHz
(Q band) simultaneously using the Korean VLBI Network (KVN) from 2009 to 2011.
A total 2045 sources selected from the VLBA Calibrator Survey (VCS) with an
extrapolated flux density limit of 100 mJy at K band. The KVNCS contains 1533
sources in the K band with a flux density limit of 70 mJy and 553 sources in
the Q band with a flux density limit of 120 mJy; it covers the whole sky down
to $-32.^\circ5$ in declination. Five hundred thirteen sources were detected in
the K and Q bands, simultaneously; $\sim76\%$ of them are flat-spectrum sources
($-0.5 \leq \alpha \leq 0.5$). From the flux--flux relationship, we anticipated
that the most of the radiation of many of the sources comes from the compact
components. Therefore, the sources listed in the KVNCS are strong candidates
for high frequency VLBI calibrators.
