[mesa-users] LS

Martin C. martincs14 at gmail.com
Tue Aug 9 19:58:39 EDT 2016


Hi all,

Forgive me if I'm confused here, but I've convinced myself that equation 7
in MESA paper 3 has some wrong signs:

[image: Inline image 1]

deltaS are changes while S_lost are absolute amounts it seems (positive).
So if the only change in spin AM is due to mass loss, my understanding is
that Jdot_ls should be zero, but with this equation it wouldn't be ?

The code is faithful to the equation as far as I can tell in
binary_jdot.f90
[image: Inline image 1]
b% s_donor% angular_momentum_removed is a positive quantity when I print
it.

thanks for any clarification,

Martin

-- 
Martin C.
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