Remaking Figure 14 (Keplerian Shear illustration) in Adobe Illustrator

[gully]

Figure 14---made in adobe illustrator---shows a top-down view of an illuminated planet losing mass preferentially on its dayside. The figure quantifies (but does not dramatacize) Kepler shear-- the fact that mass lost on the dayside will orbit the star faster than the planet and therefore appear to accelerate and lead the planet in a restframe centered on the planet.

The referee wanted to see a wider view of the illustration, such that we could see the stream of gas make a "U-turn", so to speak, since the jetisoned and blueshifted material would eventually get pushed back outwards past the orbit of the planet.

We had considered such a diagram, but the exact orbital phase of where the gas would cross the orbit is non-obvious to me: we measure blueshifts at different phases, but its not clear whether that blueshift is representative of the bulk material, or merely some non-representative layer of the gas with the right ionization balance. The right thing to do is to run an MHD simulation and see what behavior we get. That's a separate task. So we're trying to make a plausible-looking figure.

There's also the reference from Aline Vidotto, in which the planet plowing into gas can create a planetary bow shock with an extent and orientation that depends on the planet magnetic field, among other properties.

I think what we'll do is this:

• [x] Make a new figure with a zoomed-out cartoon of the orbit
• [x] Make the existing figure a zoomed-in inset.
• [x] Make sure everything is accurately set to scale

We already have demos of this in power point, so the main challenge is simply sticking everything into Illustrator and laying it out.

[gully]

funny thing-- my Adobe Illustrator license expired, so I'm on a 7 day free trial. Better get it done (and not need edits) within a week.

[gully]

Ok, here is the revised version:

[gully]

OK, this looks really good! Considering this issue closed!