The distribution and kinematics of the ionized gas in the Galactic centre region

Details The distribution and kinematics of the ionized gas in the Galactic centre region The distribution and kinematics of the ionized gas in the Galactic centre region

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...215...33s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 215, no. 1, May 1989, p. 33-47.

Astronomy and Astrophysics

Astronomy

40

Galactic Nuclei, Ion Recombination, Ionized Gases, Kinematics, Milky Way Galaxy, Black Holes (Astronomy), Electron Energy, Gravitational Fields, Ring Structures, Spatial Resolution

Scientific paper

Data from 2-cm VLA recombination-line observations toward the Galactic center (previously reported by van Gorkom et al., 1988) are presented in extensive graphs, maps, and tables and analyzed in detail. The existence of an ionized ring of radius 1.5 pc, circular velocity 100 km/sec, and mass 2.4 x 10 to the 6th solar masses (within 1.3 pc) is demonstrated, and the cloud and filament velocities are found to be consistent with an acceleration mechanism involving a central ionization source, but not with the presence of a black hole or isothermal sphere.

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