spitzer20080110-hiresBulgeless and Low Mass Galaxies

We now know that supermassive black holes (SMBHs) one million to a few billion times the mass of the sun lurk in the centers of possibly all bulge-dominated galaxies in the local Universe and that their mass is strongly correlated with the galaxy’s bulge mass. These observations have formed the […]


SMBHDual Supermassive Black Holes

Since the vast majority of galaxies contain supermassive black holes (SMBHs) and galaxy interactions trigger nuclear gas accretion, a direct consequence of the hierarchical model of galaxy formation would be the existence of binary active galactic nuclei (AGNs). The existence, frequency, and characteristics of such binary AGNs have important astrophysical implications […]


mergersGalaxy Interactions

Based on the current cold dark matter cosmological framework, it is now well-established that galaxy interactions are ubiquitous and that they play a pivotal role in the formation and evolution of galaxies. From both a theoretical and observational perspective, galaxy interactions are undoubtedly responsible for a number of important phenomena […]