Astronomy and Astrophysics – Astronomy
Scientific paper
May 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...196.2102a&link_type=abstract
American Astronomical Society, 196th AAS Meeting, #21.02; Bulletin of the American Astronomical Society, Vol. 32, p.699
Astronomy and Astrophysics
Astronomy
Scientific paper
The nuclear regions of most galaxies contain significant amounts of dust . This is a significant obstacle to dynamical attempts to establish if a Black Hole is present via optical spectroscopy. The famous radio-elliptical Centaurus A, dominated by its spectacualr obscuring dust lane is a classic illustration. We present near-IR spectroscopy of both the ionized and molecular gas in the central 100pc of the galaxy, obtained with ISAAC on the VLT. Our results allow for the first time a determination of the velocity field of the 20pc nuclear emission line disk discoverd by Schreier et al (1998). The nuclear rotation curves are well described by a thin disk in keplarian rotation and require the presence of a Black Hole with a mass ~ 108 Msun.
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