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A systematic survey of grain growth in discs around post-AGB binaries with PACS and SPIRE photometry

Published online by Cambridge University Press:  30 December 2019

K. Dsilva ,
H. Van Winckel  and
J. Kluska
K. Dsilva
Affiliation:
Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium email: karansingh.dsilva@student.kuleuven.be
H. Van Winckel
Affiliation:
Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium email: karansingh.dsilva@student.kuleuven.be
J. Kluska
Affiliation:
Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium email: karansingh.dsilva@student.kuleuven.be
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Abstract

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Post-AGB stars are the final stage of evolution of low-intermediate mass stars (M < 8 Mʘ). Those in binary systems have stable circumbinary discs. Using data from Herschel (PACS/SPIRE), we extend the SEDs of 50 galactic post-AGB binary systems to sub-millimetre wavelengths and use the slope of the SED as a diagnostic tool to probe the presence of large grains. Using a Monte Carlo radiative transfer code (MCMax), we create a large grid of models to quantify the observed spectral indices, and use the presence of large grains in the disc as a proxy for evolution.

Keywords

stars: AGB and post-AGBcircumstellar matterbinaries: generaltechniques: photometricinfrared: stars
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. 387 - 388
Copyright
© International Astronomical Union 2019 

References

van Winckel, H. 2017, Planetary Nebulae: Multi-Wavelength Probes of Stellar and Galactic Evolution, 323, 231 Google Scholar
van Winckel, H., Lloyd Evans, T., Briquet, M., et al. 2009, 505, 1221 10.1051/0004-6361/200912332CrossRefGoogle Scholar
Pols, O. R. 2004, 75, 749 CrossRefGoogle Scholar
Poglitsch, A., Waelkens, C., Geis, N., et al. 2010, 518, L2 Google Scholar
Griffin, M. J., Abergel, A., Abreu, A., et al. 2010, 518, L3 Google Scholar
Ott, S. 2010, Astronomical Data Analysis Software and Systems XIX, 434, 139 Google Scholar
Min, M., Dullemond, C. P., Dominik, C., de Koter, A., & Hovenier, J. W. 2009, 497, 155 CrossRefGoogle Scholar
Kluska, J., Hillen, M., Van Winckel, H., et al. 2018, 616, A153 CrossRefGoogle Scholar