Initial orientations of the internal spins of the primary (p) and secondary (s) progenitors.
|ID codea||direction of Jp||direction of Js|
D stands for “Direct”, i.e. parallel to the orbital spin, which in all cases is oriented along the Z+ axis; R for “Retrograde”, i.e. anti-parallel to the orbital spin, X90 means that the galaxy is rotated 90° counterclockwise around the X axis, Y90 represents a positive rotation of 90° around the Y axis, etc.
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