Testing the M_BH-M_Bulge Relation with Radio-Selected Low Surface Brightness Galaxies

The relationship between a galaxy's black hole (BH) mass and its bulge mass are considered a result of their coevolution - a test that has not been considered for low surface brightness (LSB) galaxies. LSB galaxies are diffuse, faint galaxies that are dominated by dark matter. Previous studies suggest that LSB galaxies are poorly evolved and do not follow typical coevolution trends. In order to constrain the BH mass-bulge mass relation for LSB galaxies, we propose a search to measure BH masses in 7 LSB galaxies. The proposed targets were selected after being detected in a neutral hydrogen (HI) survey and have coincident radio emission. Understanding how these dark matter rich galaxies differ from typical galaxies is imperative for understanding the role of dark matter in galaxy evolution.