(dusty)MOCASSIN: 3D photoionization and dust RT modelling of PNe
B. Ercolano1, M.J. Barlow1, P.J. Storey and X.-W.- Liu
1 University College London, UK
We present results obtained with the gas-only version of the
three-dimensional Monte Carlo code MOCASSIN, which has been used for the
photoionisation modelling of two
Planetary Nebulae (PN) with hydrogen deficient stellar cores: Abell 30 and
NGC 1501. In the case of the hydrogen-deficient polar knots of the
born-again PN Abell 30, a model was constructed with
inhomogeneous elemental abundances and gas densities. For NGC 1501 the
ionised
gas surrounding the Wolf Rayet core was modelled using a
three-dimensional density distribution derived by
the Padova group from long slit spectra.
Details of a new version of the code - dustyMOCASSIN - are also
presented here. This version features a fully self-consistent and
three-dimensional treatment
of the dust radiative transfer as well as all the features included in the
gas-only version. The code will provide, for the first time, a means for
treating non-spherical and/or inhomogeneous environment where dust grains
are
mixed with a photoionised gas.
The dustyMOCASSIN code is currently undergoing rigorous benchmarking and
some preliminary results will be shown here.