[mesa-users] Pulsating star in the HB using GYRE

[Cyrus Zalian]

Thank you to everybody for their help.

So, now my question would be : would ADLIPS or any other publicly available
pulsationnal code implement the convection-pulsation interaction ?

Thanks again for your help (as I said before this software is the perfect
tool for learning).

2016-01-25 11:21 GMT+01:00 László Molnár <molnar.laszlo at csfk.mta.hu>:

> Ha! Turns out my first guess was right. :)
>
> In the mean time, you can make a rough estimate for the red edge based
> on the non-linear pulsation results of Robert Szabo et al:
>
> http://www.aanda.org/component/article?access=bibcode&bibcode=&bibcode=2004A%2526A...425..627SFUL
>
> see Figure 3 there. Note that these pulsation models don't include
> stellar evolution, and actual stars not necessarily reach all of these
> parameter combinations.
>
> Cheers,
> László
>
> László Molnár
> -------------------------------------------
> research fellow, PhD
> IBVS editor
> Konkoly Observatory
> Budapest
> -------------------------------------------
>
>
> 2016-01-25 3:10 GMT+01:00 RICHARD H D TOWNSEND <townsend at astro.wisc.edu>:
> > Hi folks —
> >
> >> On Jan 24, 2016, at 7:32 PM, Hideyuki Saio <saio at astr.tohoku.ac.jp>
> wrote:
> >>
> >> Hi Cyrus,
> >>
> >> Your calculation results look to me quite reasonable.
> >>
> >>> Maybe the fact that my convection zone disappear is linked to the
> absence of barrier on the red side for the instability strip.
> >> I guess, the disappearance of the convective core is just due to the
> exhaustion of helium in the center, which is nothing to do with excitation
> of radial pulsations.
> >>
> >> Pulsation in the red side of the instability strip should be suppressed
> by convection-pulsation coupling in the envelope. I guess, the effect is
> not included in the GYRE code, and you found many pulsation modes excited
> in the red side of the instability strip.
> >>
> >
> > Yes, Hideyuki is quite correct here — GYRE does not include the
> pulsation-convection coupling, and thus cannot set the red edge correctly.
> Adding in this coupling is on my to-do list for 2016.
> >
> > cheers,
> >
> > Rich
> >
> >
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