Radiative Transfer Models of Dust Shells Around Post-AGB Stars

Abstract

We present a radiative transfer analysis of circumstellar dust shells around the Post-AGB stars HD 179821, HD 56126, HD 101584 and early R star HD 100764, using the code DUSTY. Parameters like mass-loss, shell inner radius, dust temperature, outflow velocity etc., are derived for HD 179821 and HD 56126 whose observed SED could be reproduced by our models.