[mesa-users] Drops the envelope_mass

[Robert Farmer]

Hi

Please keep all replies on the mesa-users list

If you set:

mass_change = -1d-6

Then the star will have a mass loss rate of 10**-6 Msun/yr, which will
remove the envelope of the star. Same thing could be achieved with the
various wind options but the mass_change option is simpler to use when you
just want to get rid of material.

Rob

On Mon, Jan 30, 2017 at 10:50 AM, Yossef Zenati <oyossefzm at gmail.com> wrote:

> hi,
> My question was when i get the AGB star i need to drop the envelop and to
> continue the Stellar ev.
>
> You give me option that i don't understand, how the mass_change here can
> be a key for drop the envelop? do you have  example or more details?
>
>
> Yossef
>
> --
> Yossef Zenati
> Physics Department
> Technion - Israel Institute of Technology
> Haifa, Israel 32000
>
> Office: Lidow Physics Complex, room 216
> Cell: 972-54-9929586 , Tel: 97248295782
>
> 2017-01-30 19:38 GMT+02:00 Robert Farmer <rjfarmer at asu.edu>:
>
>> Hi
>> You can use the mass_change option in your controls inlist to remove
>> material from the envelope of the star. As to do doing once you are on the
>> AGB, you could hook something up in your run_star_extras to turn on the
>> mass_change once you've reached the AGB stage, then once the envelope is
>> sufficiently removed you then turn it off.
>>
>> Rob
>>
>
> On Mon, Jan 30, 2017 at 6:56 AM, Yossef Zenati <oyossefzm at gmail.com>
> wrote:
>
>> Hi,
>>
>> How i can drop the envelope mass when the MS or the ZAMS coming to be AGB
>> star , after drop the envelope mass to continue the Stellar evolution?
>>
>> Thanks for help
>>
>> Yossef
>>
>> --
>> Yossef Zenati
>> Physics Department
>> Technion - Israel Institute of Technology
>> Haifa, Israel 32000
>>
>> Office: Lidow Physics Complex, room 216
>> Cell: 972-54-9929586 , Tel: 97248295782
>>
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>>
>
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