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A DARWIN C-star model grid with new dust opacities

Published online by Cambridge University Press:  30 December 2019

Kjell Eriksson ,
Susanne Höfner  and
Bernhard Aringer
Kjell Eriksson
Affiliation:
Dept. of Astronomy & Space Physics, Uppsala University, Box 516, SE-75120 Uppsala, Sweden email: kjell.eriksson@physics.uu.se
Susanne Höfner
Affiliation:
Dept. of Astronomy & Space Physics, Uppsala University, Box 516, SE-75120 Uppsala, Sweden email: kjell.eriksson@physics.uu.se
Bernhard Aringer
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Universita di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy
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Abstract

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We have improved the treatment of dust opacity from the small-particle limit approximation to size-dependent which leads to models with smaller grains, lower dust-to-gas ratios, but about the same mass-loss rates and outflow velocities. The K-magnitudes get brighter, whereas the V-magnitudes can be either brighter or dimmer depending on the wind properties.

Keywords

stars: AGB and post-AGBstars: windsoutflowsstars: carbon
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S343: Why Galaxies Care About AGB Stars: A Continuing Challenge through Cosmic Time , August 2018 , pp. 391 - 393
Copyright
© International Astronomical Union 2019 

References

Aringer, B., Girardi, L., Nowotny, W., Marigo, P., & Lederer, M.T. 2009, A&A, 503, 913 Google Scholar
Eriksson, K., Nowotny, W., Höfner, S., Aringer, B. & Wachter, A. 2014, A&A, 566, A95 Google Scholar
Mattsson, L., & Höfner, S. 2011, A&A, 533, A42 Google Scholar