[mesa-users] Fwd: Core collapse

[Francis Timmes]

hi sasha,

i’ll help you on one. then you do the others.
the youtube videos https://www.youtube.com/user/fxtimmes4444/playlists
can also help you customize your plots for your mesa models.

from http://mesa.sourceforge.net/pgstar_defaults.html#Abundance_window
one deduces the abundance profile plot controls:

! xaxis limits
Abundance_xmin = 0.0
Abundance_xmax = 150.0

! yaxis limits
Abundance_log_mass_frac_min = -3.0
Abundance_log_mass_frac_max = 0.3


the first two parameters set the mass limits to plot, in this case
i set them to 0 to 150 msun. the second two parameters control 
the range of the yaxis, in this case from -3.0 to 0.3.

clearer?

fxt




> On Nov 13, 2014, at 7:21 PM, Bill Paxton <paxton at kitp.ucsb.edu> wrote:
> 
> Can anyone help Sasha on this one.
> 
> -B
> 
> 
> 
> 
> Begin forwarded message:
> 
>> From: kostenko at astro.utoronto.ca
>> Date: November 13, 2014 2:32:18 PM PST
>> To: "Bill Paxton" <paxton at kitp.ucsb.edu>
>> Subject: Re: [mesa-users] Core collapse
>> 
>> Hi, Bill
>> 
>> Thank you very much for your help - it seems to be working. However,
>> there's a small follow-up that I hope you might be able to help me with.
>> 
>> I'm looking at the abundance plot, but the x-axis behaves very strangely.
>> Specifically, when I'm plotting a massive star, the value of M/Msun on the
>> x-axis doesn't seem to correspond to the actual mass of my star. I've
>> attached two graphs, one for M=40Msun and one for M=12Msun. In both cases,
>> as you can see, the x-axis does not reach these values.
>> 
>> I couldn't figure out how to fix this behaviour by looking at the pgstar
>> defaults. Any input would be greatly appreciated.
>> 
>> Sasha
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
>>> Hi,
>>> 
>>> The 150M case is actually loading a starting model rather than doing
>>> create_pre_ms.
>>> The starting model is a pre_ms model, but it already has its mass set.
>>> 
>>> You might start with 40M_z1m2_o_burn_to_collapse and edit inlist_40M_z1m2.
>>> 
>>> delete these lines
>>>         load_saved_model = .true.
>>>         saved_model_name = '40Mz1m2_pre_o_burn.mod'
>>> and add this one in their place
>>>      create_pre_main_sequence_model = .true.
>>> 
>>> this is the line to change to get a different mass
>>>         initial_mass = 40
>>> and change both of these for different Z
>>>         initial_z = 1d-2
>>>         Zbase = 1d-2
>>> 
>>> Good luck,
>>> Bill
>>> 
>>> 
>>> 
>>> 
>>> On Nov 11, 2014, at 5:06 PM, kostenko at astro.utoronto.ca wrote:
>>> 
>>>> Hi, MESA!
>>>> 
>>>> I have a small question: is there a test suite I can look at/modify to
>>>> look at the evolution of a star from pre MS all the way to core
>>>> collapse?
>>>> The "150M_z1m4_pre_ms_to_collapse" was close to what I want, but I'm not
>>>> quite sure how to change the mass in that case - even if I change the
>>>> mass
>>>> in the inlist, it still outputs the evolution of the exact same (150M)
>>>> star.
>>>> 
>>>> Any suggestions would be welcome.
>>>> 
>>>> Sasha
>>>> 
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