Gaia DR 2 data and the evolutionary status of eight high velocity hot
  post-AGB candidates
  From Gaia DR 2 data of eight high velocity hot post-AGB candidates LS 3593,
LSE 148, LS 5107, HD 172324, HD 214539, LS IV -12 111, LS III +52 24, and LS
3099, we found that six of them have accurate parallaxes which made it possible
to derive their distances, absolute visual magnitudes (M_V) and luminosity (log
L/L_sun). Except LS 5107 all the remaining seven stars have accurate effective
temperature (T_eff) in the literature. Some of these stars are metal-poor and
some of them do not have circumstellar dust shells. In the past the distances
of some stars were estimated to be 6~kpc which we find it to be incorrect. The
accurate Gaia DR2 parallaxes show that they are relatively nearby post-AGB
stars. When compared with post-AGB evolutionary tracks we find their initial
masses in the range of 1M_sun to 2M_sun. We find the luminosity of LSE 148 to
be significantly lower than that of post-AGB stars, suggesting that this is a
post-horizontal branch star or post-early-AGB star. LS 3593 and LS 5107 are new
high velocity hot post-AGB stars from Gaia DR2.
