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The Many Faces of the Gas in Centaurus A (NGC 5128)

Published online by Cambridge University Press:  02 January 2013

Raffaella Morganti
Raffaella Morganti
Affiliation:
Netherlands Institute for Radio Astronomy, Postbus 2, 7990 AA, Dwingeloo, and Kapteyn Astronomical Institute, University of Groningen, P.O. Box 800, 9700 AV Groningen, The Netherlands. Email: [email protected]
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Abstract

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Centaurus A (NGC 5128) is ideal for investigating the characteristics and role of gas in an earlytype galaxy in the presence of a radio-loud active nucleus. The different phases of the gas—hot (X-ray), warm (ionized), and cold (H i and molecular)—are all detected in this object and can be studied at very high spatial resolution, due to its proximity. This richness makes Centaurus A truly unique. Spatially, these gas structures span from the pc to the tens of kpc scale. Thus, they allow us to trace very different phenomena, from the formation and evolution of the host galaxy, to the interplay between nuclear activity and interstellar medium and the feeding mechanism of the central black hole. A lot of work has been done to study and understand the characteristics of the gas in this complex object, and the present paper summarizes what has been achieved so far.

Keywords

galaxies: individual (Centaurus A/NGC 5128)galaxies: ISMgalaxies: active
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 27 , Special Issue 4: The Many Faces of Centaurus A , 2010 , pp. 463 - 474
Copyright
Copyright © Astronomical Society of Australia 2010

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