Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...269..169v&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 269, no. 1-2, p. 169-174.
Astronomy and Astrophysics
Astrophysics
17
Accretion Disks, Gas Dynamics, Milky Way Galaxy, Molecular Clouds, Molecular Gases, Trace Elements
Scientific paper
We report results of numerical model calculations for the dynamics of an accretion disk in the innermost few parsec of our Galaxy, and we find that the gas motion can reasonably well be represented by such a disk model. The molecular cloud M-0.13-0.08 in this region is used as an example of a tracer for the velocity field. We find that the velocity field can be best represented by using a stationary accretion disk model with constant turbulent viscosity. The mass flow rate through the disk is found to be of the order of 0.01 solar mass/yr. Moreover, our model allows to determine the location of this molecular cloud; we find that it is situated approximately 100 pc from the Galactic Center. We discuss implications of this result for the global picture of accretion in our Galactic Center as well as in other (active) galactic centers.
Biermann Peter L.
Duschl Wolfgang J.
von Linden Susanne
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