Why are the 'Fixed Stars' so FIXED?

On Fri, 16 Mar 2007 16:59:26 -0000, "George Dishman"
wrote:


"Henri Wilson" HW@.... wrote in message
.. .
On Fri, 16 Mar 2007 00:22:44 -0000, "George Dishman"

You can't do that, it's an unstable configuration. You
could get away with one at a Lagrange point but there
is a limit on the mass ratios.

I wasn't suggesting that an object was in orbit 90 out. As far as we know
that
is indeed impossible.

Fine, so you are not allowed to put one into your simulation
and claim you have succeeded. In fact you told me you got
the motion of the stars by simulating Newtonian gravity so
your configuration should have been unstable. It looks as
though that part is buggy too.

...but there could be other reasons...tidal effects(?)

Then simulate tidal effects. All you can do for now is use
two stars and get the best fit. If the residuals are within
the observational uncertainty you have a match and if not
you don't.

The fact that it was 90 and not 80 or 100 made me wonder.

Pointless since it cannot exist.

Then forget it. It was only a minor refinement anyway. The curve matched quite
well without it. I doubt if the published one is particularly accurate.

I was wondering about the material that is falling into the neutron star.
If it is spinning, its speed would drop of with distance. If it wasn't
spinning
the pulsar would be slowing down.

So look up the rate of change of the pulsar frequency, it is
one of the key published values.

Of course, you can create any possible shape with sufficient
harmonics but Keplerian orbits produce limits, that is the
anture of the test. You can't just add more factors.

Everything I add is strictly in accordance with the BaTh. I cannot
simply add
any old curve to produce the one I want. There are strict limitations
particularly for elliptical orbits.

Yes, and a third object is not allowed !

Of course it is....many star curves clearly involve a third or more
object.

Then those curves will almost certainly be failures too, you
cannot have a stable configuration with a third object except
under _very_ limited conditions (e.g. figure of eight or the
very disparate separations like the Sirius system).

George, does Jupiter have moons and orbit the sun?
Does the Earth have a moon George and orbit the sun?

I don't think you have fully realised the complexity of this whole issue
George.

I don't think you realise the constraints Keplerian orbits
place on you Henry.

George, there are probably 10 billion stars in our galaxy, most with companions
and orbiting planets.
Do you really think we know every possible configuration just by investigating
our own solar system?

However my program IS strictly limited to Keplerian orbits. I introduced the
phase variation to investigate Lagrange points....and found evidence that
objects DO exist at the 60 degree one.


George



"When a true genius appears in the world, you may know
him by this sign, that the dunces are all in confederacy against him."
--Jonathan Swift.