Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-05-14
Astronomy and Astrophysics
Astrophysics
3 pages, to appear in Proc. IAU Symp. 234, Planetary Nebulae in Our Galaxy and Beyond (3-7 Apr 2006), eds. M.J. Barlow & R.H.
Scientific paper
10.1017/S1743921306003395
The assumption of spherical symmetry is not justified for the vast majority of PNe. The interpretation of spatially-resolved observations cannot rely solely on the application of 1D codes, which may yield incorrect abundances determinations resulting in misleading conclusions. The 3D photoionisation code MOCASSIN (Monte CAarlo SimulationS of ionised Nebulae) is designed to remedy these shortcomings. The 3D transfer of both primary and secondary radiation is treated self-consistently without the need of approximations. The code was benchmarked and has been applied to the study of several PNe. The current version includes a fully self-consistent radiative transfer treatment for dust grains mixed within the gas, taking into account the microphysics of dust-gas interactions within the geometry-independent Monte Carlo transfer. The new code provides an excellent tool for the self-consistent analysis of dusty ionised regions showing asymmetries and/or density and chemical inhomogeneities. Work is currently in progress to incorporate the processes that dominate the thermal balance of photo-dissociation regions (PDRs), as well as the formation and destruction processes for all the main molecular species.
Barlow Michael J.
Ercolano Barbara
Storey Peter J.
No associations
LandOfFree
Three-Dimensional Ionisation, Dust RT and Chemical Modelling of Planetary Nebulae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Three-Dimensional Ionisation, Dust RT and Chemical Modelling of Planetary Nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three-Dimensional Ionisation, Dust RT and Chemical Modelling of Planetary Nebulae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-264940