Paper:	HST Observations of NGC 6240
Volume:	249, The Central Kiloparsec of Starbursts and AGN: the La Palma Connection
Page:	665
Authors:	Gerssen, Joris; van der Marel, Roeland P.; Axon, David J.; Mihos, Chris; Hernquist, Lars; Barnes, Joshua E.
Abstract:	WFPC2 images and STIS spectroscopic observations are presented of the double nucleus in the merger system NGC 6240. We find that: a) the kinematics of the ionized gas is similar to that of the molecular gas, despite a different morphology; b) the gaseous and stellar kinematics are quite different, suggesting an early merger stage; c) neither the gaseous nor the stellar kinematics show an obvious sign of the supermassive black hole believed to be responsible for the X-ray emission of NGC 6240; and d) the steep off-nuclear velocity gradient is not due to a ~1011 Modot black hole, in contrast to earlier suggestions.

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