[Enchilada]

Originally Posted by mental4astro

*you mentioned little gaseous residue has been found in globular cores, is there any evidence of a residual 'tail' of hot gas behind the orbit of these?

Odd question. No. Stars don't make comet-like contrails.

* The huge distance of the globular clusters makes seeing any hot gases (plasma) near impossible.

* If you mean mass loss, like seen in the solar wind, the quantity of gas is absolutely miniscule. Even for the highest mass-loss red giants stars, the quantities are not overly significant.

* If you mean gases as nebulosity, well the age of the globular (8 to 12 billion years) suggests the material has collected the gas into the stars or has been lost long ago - discarded by strong winds during the stars initial formation now spread into now long distant intergalactic (or extragalactic) space.

Originally Posted by mental4astro

*Open clusters are often filled with gas and dust, can we see much evidence of its discipation, or is it eventually just 'swallowed up' by the component stars?

discipation ?? Do you mean dissipation ??

This is because most open clusters are relatively new - being millions and not billions years old like the more ancient globulars. Being recently formed en masse out of some emission nebulae as new big hot blue stars.
Star losses also do occur in open clusters and probably at a more rapid rate. Mergers are even less likely than predicted in the globular systems.

Originally Posted by mental4astro

*would Elliptical galaxies be 'over grown' globulars? I can follow the thinking of the dynamics holding GC's together, even irregular galaxies, but elipticals escape me.

Elliptical galaxies are not the same as globulars - structurally or dynamically. Behaviours and evolution are totally different. They are just different kinds of objects.

Originally Posted by mental4astro

*I believe that a planetary nebula has been found in a GC, if so wouldn't it be exibiting tell-tale signs of gravitational influence from neighbouring stars to guide the theories of GC structure?

Planetary nebulae exist in only three known globulars. (one each) They are a natural part of stellar evolution, and observations of their structure would not be influenced be grossly by other nearby stars. Understanding globulars actually structure would not be likely because of the very small numbers of planetaries.

Note : New version of dynamics attached, including some online links, and some comments on angular momentum pertaining to globulars.