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<p>Hi MESA users,</p>
<p>I am modeling a binary during stable mass transfer with rotation
enabled.<br>
I have set the mass transfer to be conservative</p>
<div style="color: #d4d4d4;background-color: #1e1e1e;font-family: 'Droid Sans Mono', 'monospace', monospace;font-weight: normal;font-size: 14px;line-height: 19px;white-space: pre;"><div><span style="color: #d4d4d4;">mass_transfer_alpha = </span><span style="color: #b5cea8;">0.0d0</span></div><div><span style="color: #d4d4d4;">mass_transfer_beta = </span><span style="color: #b5cea8;">0.0d0</span></div><div><span style="color: #d4d4d4;">mass_transfer_delta = </span><span style="color: #b5cea8;">0.0d0</span></div><div><span style="color: #d4d4d4;">mass_transfer_gamma = </span><span style="color: #b5cea8;">0.0d0</span></div></div>
<p></p>
<p>and I am using the de Mink et al. 2013 model for the angular
momentum of the matter that is accreted.</p>
<div style="color: #d4d4d4;background-color: #1e1e1e;font-family: 'Droid Sans Mono', 'monospace', monospace;font-weight: normal;font-size: 14px;line-height: 19px;white-space: pre;"><div><span style="color: #d4d4d4;">do_j_accretion = </span><span style="color: #569cd6;">.true.</span></div></div>
<p></p>
<p>As soon as mass transfer starts, the accretor is spun up quickly
to critical rotation (breakup), at which point it undergoes mass
loss as described in controls.default ("For critical rotation mass
loss"), until the surface falls below critical rotation again. And
this excess mass appears to be lost from the binary system.<br>
<br>
<b>My question is the following: </b>what is the specific angular
momentum that the code assumes for the mass that is lost due to
the accretor being above critical rotation? Is this lost mass just
handled as wind mass loss or does it have a different treatment?<br>
</p>
Thank you,<br>
Best regards,<br>
Ruggero
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