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The Structure and Kinematics of the Ionized Gas In Centaurus A

Published online by Cambridge University Press:  04 August 2017

J. Bland ,
K. Taylor  and
P. D. Atherton
J. Bland
Affiliation:
Royal Greenwich Observatory, Hailsham, Sussex, England Institute for Astronomy, Honolulu, Hawaii
K. Taylor
Affiliation:
Royal Greenwich Observatory, Hailsham, Sussex, England
P. D. Atherton
Affiliation:
Queensgate Instruments, London, England

Abstract

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The TAURUS Imaging Fabry-Perot System (Taylor & Atherton 1980) has been used with the IPCS at the AAT to observe the ionized gas within NGC 5128 (Cen A) at [NII]λ6548 and Hα. Seven independent (x, y,λ) data cubes were obtained along the dust lane at high spectral resolution (30 km/s FWHM) and at a spatial resolution limited by the seeing (~1″). From these data, maps of the kinematics and intensities of the ionized gas were derived over a 420″ by 300″ region. The maps are the most complete to date for this object comprising 17500 and 5300 fitted spectra in Ha and [NII]λ6548 respectively. The dust lane system is found to be well understood in terms of a differentially rotating disc of gas and dust which is warped both along and perpendicular to the line-of-sight.

Type
Posters
Information
Symposium - International Astronomical Union , Volume 127: Structure and Dynamics of Elliptical Galaxies , 1987 , pp. 417 - 418
Copyright
Copyright © Reidel 1987 

References

REFERENCES

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