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The role of heat conduction to the formation of [WC]-type planetary nebulae

Published online by Cambridge University Press:  30 August 2012

Christer Sandin ,
Matthias Steffen ,
Ralf Jacob ,
Detlef Schönberner ,
Ute Rühling ,
Wolf-Rainer Hamann  and
Helge Todt
Christer Sandin
Affiliation:
Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, DE–14482, Potsdam, Germany email: csandin@aip.de
Matthias Steffen
Affiliation:
Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, DE–14482, Potsdam, Germany email: csandin@aip.de
Ralf Jacob
Affiliation:
Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, DE–14482, Potsdam, Germany email: csandin@aip.de
Detlef Schönberner
Affiliation:
Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, DE–14482, Potsdam, Germany email: csandin@aip.de
Ute Rühling
Affiliation:
Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, DE–14482, Potsdam, Germany email: csandin@aip.de Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Str. 24/25, DE–14476, Potsdam, Germany
Wolf-Rainer Hamann
Affiliation:
Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Str. 24/25, DE–14476, Potsdam, Germany
Helge Todt
Affiliation:
Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Str. 24/25, DE–14476, Potsdam, Germany
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Abstract

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X-ray observations of young Planetary Nebulæ (PNe) have revealed diffuse emission in extended regions around both H-rich and H-deficient central stars. In order to also reproduce physical properties of H-deficient objects, we have, at first, extended our time-dependent radiation-hydrodynamic models with heat conduction for such conditions. Here we present some of the important physical concepts, which determine how and when a hot wind-blown bubble forms. In this study we have had to consider the, largely unknown, evolution of the CSPN, the slow (AGB) wind, the fast hot-CSPN wind, and the chemical composition. The main conclusion of our work is that heat conduction is needed to explain X-ray properties of wind-blown bubbles also in H-deficient objects.

Keywords

conductionhydrodynamicsplanetary nebulae: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 494 - 495
Copyright
Copyright © International Astronomical Union 2012

References

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