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A systematic survey of grain growth in discs around post-AGB binaries with PACS and SPIRE photometryDsilva, K.; Van Winckel, H.; Kluska, J.
Proceedings of the International Astronomical Union, 08/2018, Letnik: 14, Številka: S343Journal Article
Abstract Post-AGB stars are the final stage of evolution of low-intermediate mass stars (M < 8 M ʘ ). 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.
