Young Star Clusters In The Circumnuclear Region Of NGC 2110
  High-resolution observations in the near infrared show star clusters around
the active galactic nucleus (AGN) of the Seyfert 1 NGC2110, along with a 90 x
35 pc bar of shocked gas material around its nucleus. These are seen for the
first time in our imaging and gas kinematics of the central 100pc with the Keck
OSIRIS instrument with adaptive optics. Each of these clusters is 2-3 times
brighter than the Arches cluster close to the centre of the Milky Way. The core
star formation rate (SFR) is 0.3 M$_\odot$/yr. The photoionized gas (He I)
dynamics imply an enclosed mass of 3-4 x 10$^8$ M$_\odot$. These observations
demonstrate the physical linkage between AGN feedback, which triggers star
formation in massive clusters, and the resulting stellar (and SNe) winds, which
cause the observed [Fe II] emission and feed the black hole.
