Debattista, Victor P.Liddicott, David J.Gonzalez, Oscar A.Beraldo e Silva, LeandroAmarante, João A. S.Lazar, IlinZoccali, ManuelaValenti, ElenaFisher, Deanne B.Khachaturyants, TigranNidever, David L.Quinn, Thomas R.Du, MinKassin, Susan2023-06-012023-06-012023-04Debattista, Victor P., David J. Liddicott, Oscar A. Gonzalez, Leandro Beraldo e Silva, João AS Amarante, Ilin Lazar, Manuela Zoccali et al. "The imprint of clump formation at high redshift. II. The chemistry of the bulge." The Astrophysical Journal 946, no. 2 (2023): 118.1538-4357https://scholarworks.montana.edu/handle/1/17935In Paper I, we showed that clumps in high-redshift galaxies, having a high star formation rate density (ΣSFR), produce disks with two tracks in the [Fe/H]–[α/Fe] chemical space, similar to that of the Milky Way's (MW's) thin+thick disks. Here we investigate the effect of clumps on the bulge's chemistry. The chemistry of the MW's bulge is comprised of a single track with two density peaks separated by a trough. We show that the bulge chemistry of an N-body + smoothed particle hydrodynamics clumpy simulation also has a single track. Star formation within the bulge is itself in the high-ΣSFR clumpy mode, which ensures that the bulge's chemical track follows that of the thick disk at low [Fe/H] and then extends to high [Fe/H], where it peaks. The peak at low metallicity instead is comprised of a mixture of in situ stars and stars accreted via clumps. As a result, the trough between the peaks occurs at the end of the thick disk track. We find that the high-metallicity peak dominates near the mid-plane and declines in relative importance with height, as in the MW. The bulge is already rapidly rotating by the end of the clump epoch, with higher rotation at low [α/Fe]. Thus clumpy star formation is able to simultaneously explain the chemodynamic trends of the MW's bulge, thin+thick disks, and the splash.en-UScc-byhttps://creativecommons.org/licenses/by/4.0/Galactic bulge (2041)Milky Way formation (1053)Milky Way evolution (1052)Milky Way dynamics (1051)Galaxy bulges (578)Article