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arXiv · 1810.07011

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

Karan Dsilva·Hans Van Winckel·Jacques Kluska
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Abstract

Post-AGB stars are the final stage of evolution of low-intermediate mass stars (M<8 Solar Masses). 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.

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Karan Dsilva, Hans Van Winckel, Jacques Kluska. 2018-10-14. A systematic survey of grain growth in discs around post-AGB binaries with PACS and SPIRE photometry. https://arxiv.org/abs/1810.07011

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