On 19 Feb 2007 05:32:38 -0800, "George Dishman"
wrote:

On 19 Feb, 05:09, HW@....(Henri Wilson) wrote:
On Mon, 19 Feb 2007 00:10:58 -0000, "George Dishman" wrote:
"Henri Wilson" HW@.... wrote in message ...
On Sun, 18 Feb 2007 09:31:57 -0000, "George Dishman"
will be expected.

Such as?

Too close, moving too slowly...

The distance is usually known from Hipparcos or
so far away that it is academic for this purpose.

The velocity can be determined from the spectrum
of course and your program is then supposed to
tell us the velocity, but in general nearby stars
that are too close to resolve must be moving quite
fast.

George, my program DOES NOT tell us anything about the maximum velocity.
Where did you get the idea that it does?

If two similar stars are orbiting in nearly circular orbits, their
contributions to a combined brightness curve will just about nullify each
other.

Unde certain circumstances that might be
possible but the two light curves can be
separated spectroscopically, the depth of
spectral lines should vary with one set
rising while the others fade.


I tried to expain this to Andersen in the case of HD10875

Which of the above did you suggest applied?

The addition of two sine curves 180 out...... plus extinction.

That would suggest a non-linear relation between (v-c/n)
and dv/ds. It still needs to be first order at zero but
perhaps a third order component? Gravity certainly isn't
going to do anything for you.

I'm not so sure of that.

I am.

But you don't really know.

Yes I do, it would make a difference of about
45 parts per million to the critical distance
for the pulsar for example (mental arithmetic,
E&OE).

George, measurements made on Earth about the rate of change of velocity in the
Earth's gravity field don't really tell us much about the possible role that
the whole solar gravity field might play in regard to a local EM frame of
reference, if such exists.
Light entering that frame from outside and initially moving at c+v wrt Earth
might be affected much more than you think.
However I basically agree with what you say. Gravity is probably too weak to be
a major factor.



I'm concerned by the fact that light from one part of the orbit will be
'unified' before light from another part is even emitted. I can see a problem
there but haven't been able to work out exactly what it might be.

Don't worry, the star emits for billions of years
so that's always going to be the case. However the
speed of any individual photon can only respond to
the "quality of the space" it is passing through (I
like your phrase, nicely general). It isn't a problem
unless you are looking for excuses to explain why
your theory doesn't work when the time comes.

George