TUNA Lunch Talk:

Remco van den Bosch

Max Planck Institut für Astronomie, Heidelberg

Ubermassive Black Holes

November 13

12:10PM, Room 230, NRAO, Edgemont Road


All massive galaxies likely have supermassive black holes at their centers, and the masses of the black holes are believed to correlate with properties of their host galaxy. A spectroscopic survey of 700 nearby galaxies revealed several lenticular galaxies with extremely high velocity dispersions for their small sizes and luminosities. These systems all appear to have extremely big black hole masses. This shows that the black holes in these systems did not co-evolve with its host galaxy, which is in stark conflict with the popular co-evolution picture of black hole and host.