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The Velocities of 6cm Recombination Line Emission originating near the Galactic Nucleus

Published online by Cambridge University Press:  25 April 2016

F. F. Gardner  and
J. B. Whiteoak
F. F. Gardner
Affiliation:
Division of Radiophysics, CSIRO, Sydney
J. B. Whiteoak
Affiliation:
Division of Radiophysics, CSIRO, Sydney
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Extract

Although it is well known that HII regions are present in the innermost regions of the Galaxy their kinematics are still not fully understood. In one study Pauls et al. (1976) surveyed with a beamwidth of 3′ arc the 10 GHz recombination line emission in directions within 15′ arc of the nuclear radio source Sgr A. They found that the emission velocities varied from position to position within the range -50 to + 50 km s-1but appeared to lack any overall pattern. In contrast, we have recently observed the recombination line emission from the galactic centre region with a beamwidth of 4′.5 arc, and find strong evidence of ordered motions near the galactic nucleus.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 3 , Issue 2 , September 1977 , pp. 150 - 152
Copyright
Copyright © Astronomical Society of Australia 1977

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References

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