[mesa-users] diffusion induced H flashes on surface of He wd

[Bill Paxton]

On Jul 30, 2012, at 3:55 PM, jingluan at caltech.edu wrote:
> Do you have successful experience in re-producing white dwarf H flashes
> like in the paper MNRAS 382, 779 (2007) by Panei et al. please? I am
> trying to use mesa to do H flashes now.

Hi Jing,

After getting your email I've played around with diffusion induced H flashes with He wd a little.
Keep in mind that this has not been carefully tested -- it is just a "demo", not "science". !!!  

The following plots show mesa/star with diffusion enabled for 2 small he wd's -- 0.15 and 0.20 Msun.
The smaller one does stable H burning while the larger one undergoes flashes.

The starting models both come from mesa/data/star_data/white_dwarf_models.
Here's the inlist I used with my current version (4304) which should be compatible with 4298 for this.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: inlist_wd
Type: application/octet-stream
Size: 12409 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20120804/61123e44/attachment.obj>
-------------- next part --------------


I'm not going to have more time to put into this soon -- but I hope these examples help.
You'll need to dig into the mysteries of this, and let us know what you discover.

See you at the mesa summer school.

Good luck,
Bill


0.15 Msun
-------------- next part --------------
A non-text attachment was scrubbed...
Name: H_R.pdf
Type: application/pdf
Size: 21328 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20120804/61123e44/attachment.pdf>
-------------- next part --------------


0.20  Msun
-------------- next part --------------
A non-text attachment was scrubbed...
Name: H_R.pdf
Type: application/pdf
Size: 23099 bytes
Desc: not available
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20120804/61123e44/attachment-0001.pdf>
-------------- next part --------------