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Radial density profiles of PNe halos from numerical models of mass-loss history

Published online by Cambridge University Press:  30 August 2012

Juan-Luis Verbena ,
Klaus-Peter Schröder  and
Astrid Wachter
Juan-Luis Verbena
Affiliation:
Departamento de Astronomía, Universidad de Guanajuato, Apartado postal 144, 36000 Guanajuato, GTO, México email: [email protected]
Klaus-Peter Schröder
Affiliation:
Departamento de Astronomía, Universidad de Guanajuato, Apartado postal 144, 36000 Guanajuato, GTO, México email: [email protected]
Astrid Wachter
Affiliation:
Departamento de Astronomía, Universidad de Guanajuato, Apartado postal 144, 36000 Guanajuato, GTO, México email: [email protected]
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Abstract

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We review the stellar mass loss of red giants and tip-AGB objects analizing the variation in the outflow velocity for different mass models (Wachter et al. 2002). We approach the superwind problem and see the evolution of tip-AGB stars via previously made mass-loss histories that are consistent with the Weidemann initial-final mass relationship (for carbon-rich stars). Finally density profiles are produced from these mass-loss histories, and the corresponding line-of-sight integration is compared with observational data (Phillips et al. 2009). We note the resemblance between the results obtained with our models and the observational data. We are thus able to reproduce the general trends of the emission from simple models (see Verbena et al. 2011).

Keywords

stars: AGB and post AGBstars: winds outflowsplanetary nebulae: generalcircumstellar matter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 518 - 519
Copyright
Copyright © International Astronomical Union 2012

References

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