How many components? Quantifying the complexity of the metallicity distribution in the Milky Way bulge with APOGEE

Alvaro Rojas-Arriagada, Gail Zasowski, Mathias Schultheis, Manuela Zoccali, Sten Hasselquist, Cristina Chiappini, Roger E. Cohen, Katia Cunha, José G. Fernández-Trincado, Francesca Fragkoudi, D. A. García-Hernández, Doug Geisler, Felipe Gran, Jianhui Lian, Steven Majewski, Dante Minniti, Antonela Monachesi, Christian Nitschelm, Anna B.A. Queiroz