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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
Affiliation:
Departamento de Astronomía, Universidad de Guanajuato, Apartado postal 144, 36000 Guanajuato, GTO, México email: jluis@astro.ugto.mx
Klaus-Peter Schröder
Affiliation:
Departamento de Astronomía, Universidad de Guanajuato, Apartado postal 144, 36000 Guanajuato, GTO, México email: jluis@astro.ugto.mx
Astrid Wachter
Affiliation:
Departamento de Astronomía, Universidad de Guanajuato, Apartado postal 144, 36000 Guanajuato, GTO, México email: jluis@astro.ugto.mx
Corresponding
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Abstract

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).

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2012

References

Fleischer, A. J., Gauger, A., & Sedlmayr, E. 1992, A&A, 266, 321 Google Scholar
Phillips, J. P., Ramos-Larios, G., Schröder, K. P., & Verbena, J. L. 2009, MNRAS, 399, 1126 CrossRefGoogle Scholar
Schröder, K. P., Winters, J. M., & Sedlmayr, E. 1999, A&A, 349, 898 Google ScholarPubMed
Steffen, M., Szczerba, R., & Schönberner, D. 1998, A&A, 337, 149 Google Scholar
Verbena, J. L., Schröder, K. P., & Wachter, A. 2011, A&A, 415, 2270 Google Scholar
Wachter, A., Schröder, K. P., Winters, J. M., Arndt, T. U., & Sedlmayr, E. 2002, A&A, 384, 452 Google Scholar
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