Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 367, Issue 1, Pages 2-18Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2005.09713.x
Keywords
instrumentation : adaptive optics; galaxies : individual : NGC 1399; galaxies : kinematics and dynamics
Categories
Ask authors/readers for more resources
We present near-infrared (NIR) adaptive optics-assisted spectroscopic observations of the CO (Delta mu= 2) absorption bands towards the centre of the giant elliptical galaxy NGC 1399. The observations were made with NAOS-CONICA (on the European Southern Observatory's Very Large Telescope) and have a full width at half-maximum resolution of 0.15 arcsec (14 pc). Kinematic analysis of the observations reveals a decoupled core and strongly non-Gaussian line-of-sight velocity profiles in the central 0.2 arcsec (19 pc). NIR imaging also indicates an asymmetric elongation of the central isophotes in the same region. We use spherical orbit-superposition models to interpret the kinematics, using a set of orthogonal 'eigen-velocity profiles' that allow us to fit models directly to spectra. The models require a central black hole of mass 1.2(-0.6)(+0.5) x 10(9) M circle dot, with a strongly tangentially biased orbit distribution in the inner 40 pc.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available