Absence of an X-shaped Structure in the Milky Way Bulge Using Mira
  Variable Stars
  The stellar density distribution of the bulge is analyzed through one of its
tracers. We use oxygen-rich Miras variables from the Catchpole et al. (2016)
survey and OGLE-III survey as standard candles. The average age of these stars
is around 9 Gyr. The population traced by Mira variables matches a boxy bulge
prediction, not an X-shaped one, because only one peak is observed in the
density along the analyzed lines of sight, whereas the prediction of an X-shape
gives two clear peaks.
