[mesa-users] Horizontal branch and zahb

[Jeremy Sakstein]

Hi everyone

I have what I suspect is a really stupid question but not really being a
stellar structure person I'm struggling a bit.

I'm trying to study RR Lyrae stars with Z=0.0001 so I've been studying the
create_zahb and pre_zahb test_suite cases but the model has Z=0.02 so I'm
trying to figure out how to repeat the process but failing miserably.

My ultimate goal is to create a Z=0.0001 0.75 M zahb star that I can use as
a starting model to evolve differently (I'm changing a parameter related to
a modified gravity theory) through the RR Lyrae instability strip.

If anyone can help me figure out which initial (pre_ms to near hb I
suppose) model I should evolve to create the model that create_zahb can use
to make the starting model I'm after I would really appreciate it. Ideally,
I'd like to start outside the blue edge and evolve through it.

Cheers,

Jeremy
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