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HI in Active Galactic Nuclei

Published online by Cambridge University Press:  26 May 2016

Z. Yu
Affiliation:
Shanghai Astronomical Observatory, 80 Nandan Road, Shanghai 200030, China
D. Jiang
Affiliation:
Shanghai Astronomical Observatory, 80 Nandan Road, Shanghai 200030, China

Abstract

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Recent VLBA and VLA observations indicate the possibility of a circumnuclear disc or torus of HI in detected in absorption in NGC 3894. Strong absorption lines are detected toward both the aproaching and receding jets. Absorption profiles integrated over six regions across the source are shown. At lease two velocity components are present in all lines of sight except toward the southeast. The parameters are obtained from these fits(Peck and Taylor,1998,Ap.J.,502,L23). We use the bending model to explain the four prominent absorption features.

Type
Part 2: Extra Galactic Neutral Hydrogen and Cosmology
Copyright
Copyright © Astronomical Society of the Pacific 2002 

References

Peck, A.B. and Taylor, G.B., 1998, ApJ, 502, L23.Google Scholar
Rogstad, D.H. et al., 1974, ApJ, 193, 309.Google Scholar