I need help for nebula's 3D interpretation

jll · Post #1by **jll** » 29.04.2006, 20:24

Hi all,

I would like to know if my 3D interpretation of the structure of IC4406 has a real physical value, before spending time on this model :

The original image from Hubble Site

My 3D interpretation :

Thanks for help.

JLL

Malenfant · Post #2by **Malenfant** » 30.04.2006, 03:13

What makes you think anyone here would know what the nebula really looks like? It's not like we've seen it from any other angles...

Post #3by **t00fri** » 30.04.2006, 09:30

Generally, I agree with Malenfant, unless there are special symmetries and/or universal features involved.

Evidence for an axial symmetry of the density distributions along with universal features of the respective (axially rotated) 2d density in case of bipolar planetary nebulae have been convincingly discussed in the thesis and subsequent scientific publications of the people from the German MaxPlanck institute etc:

http://www.mpi-sb.mpg.de/~magnor/civr.html
http://www.mpi-sb.mpg.de/~magnor/public ... tvcg05.pdf
http://www.uni-weimar.de/~hildebr2/download/thesis.pdf

See also my respective discussions here:
http://www.celestiaproject.net/forum/viewtopic ... c&start=15

The main point was that in a computer rendering comparison with a number of such planetaries visible in different orientations from Earth such an axial symmetry and rather universal features could be deduced. The familiar great diversity of appearances of such planetaries was demonstrated to be largely due to the different projections/orientations they subtend as seen from Earth.

In case your nebula falls into or is related to this class of planetaries, perhaps similar arguments could be used about its 3d structure.

Bye Fridger

buggs_moran · Post #4by **buggs_moran** » 30.04.2006, 11:30

If I understand what I have read on planetaries so far, it is roughly like what the Ring Nebula would look like from the side. See Fridger's discussion as he says and follow those links.