Detalles de publicación

PP 017017

Absence of an X-shaped Structure in the Milky Way Bulge Using Mira Variable Stars

Martín López-Corredoira
IAC, ULL
The stellar density distribution of the bulge is analyzed through one of its tracers. We use oxygen-rich Mira 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.

 
Aceptado para publicación en ApJ | Enviado el 2017-02-10 | Proyecto P/309405