[Mesa-users] No He burning for tutorial M=0.81 star

[Richard Battistini]

Hi all,

I reran my intended initial mass M = 0.81 model with these inlists and
reached He burning as you can see in Trho.png. However, I am puzzled as to
why the HR diagram does not represent what I would expect of low mass star
evolution so well (for example, seeing the star move towards the bottom
left after the He flash into the horizontal branch). Any assistance would
be greatly appreciated.

On Mon, Mar 8, 2021 at 10:34 AM Josiah Schwab <jwschwab at ucsc.edu> wrote:

> Hi Rich B.,
>
>
>> A star with that mass will typically taken longer than a Hubble time to
>> reach He ignition (if indeed that ever occurs). Can you try running without
>> any max age setting, and see what happens?
>>
>
> Note that core He burning is expected to start (via a core He flash) when
> the He core grows to about 0.47 Msun.   The He core in your plots was only
> 0.24 Msun, so this model still has a way to go before He ign is expected.
> You should see the He core mass continuing to grow via H-shell burning as
> you extend the run.
>
> Josiah
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20210318/85b54cf8/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: inlist_pgstar
Type: application/octet-stream
Size: 931 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20210318/85b54cf8/attachment.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: inlist_project
Type: application/octet-stream
Size: 1043 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20210318/85b54cf8/attachment-0001.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: HR.png
Type: image/png
Size: 15030 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20210318/85b54cf8/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Trho.png
Type: image/png
Size: 25386 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20210318/85b54cf8/attachment-0001.png>