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Using numerical hydrodynamics code, we perform various idealized galaxymerger simulations to study the star formation (SF) of two merging diskgalaxies. Our simulations include gas accretion onto supermassive black holesand active galactic nucleus (AGN) feedback. By comparing AGN simulations withthose without AGNs, we attempt to understand when the AGN feedback effect issignificant. With ~70 simulations, we investigated the SF with the AGN effectin mergers with variety of mass ratios, inclinations, orbits, galaxy structuresand morphologies. Using these merger simulations with AGN feedback, we measuremerger-driven SF using the burst efficiency parameter introduced by Cox et al.We confirm the previous studies that, in galaxy mergers, AGN suppresses SF moreefficiently than in isolated galaxies. However, we additionally find that theeffect of AGNs on SF is larger in major mergers than in minor mergers. In minormerger simulations with different primary bulge-to-total ratios, the effect ofbulge fraction on the merger-driven SF decreases due to AGN feedback. We createmodels of Sa, Sb and Sc type galaxies and compare their SF properties whileundergoing mergers. With the current AGN prescriptions, the difference inmerger-driven SF is not as pronounced as that in the recent observational studyof Kaviraj. We discuss the implications of this discrepancy.

Star Formation of Merging Disk Galaxies with AGN Feedback Effects