Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2010-07-07
Astrophysical Journal Letters 719 (2010) L28-L31
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
4 pages, 3 figures; corrected typo in equation (1); updated reference data
Scientific paper
We have developed a new method for calculating common envelope (CE) events based on explicit consideration of the donor star's structural response to adiabatic mass loss. In contrast to existing CE prescriptions, which specify a priori the donor's remnant mass, we determine this quantity self-consistently and find it depends on binary and CE parameters. This aspect of our model is particularly important to realistic modeling for upper main sequence star donors without strongly degenerate cores (and hence without a clear core/envelope boundary). We illustrate the central features of our method by considering CE events involving 10 solar mass donors on or before their red giant branch. For such donors, the remnant core mass can be as much as 30% larger than the star's He-core mass. Applied across a population of such binaries, our methodology results in a significantly broader remnant mass and final orbital separation distribution and a 20% increase in CE survival rates as compared to previous prescriptions for the CE phase.
Deloye Christopher . J.
Taam Ronald E.
No associations
LandOfFree
Adiabatic Mass Loss and the Outcome of the Common Envelope Phase of Binary Evolution does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Adiabatic Mass Loss and the Outcome of the Common Envelope Phase of Binary Evolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adiabatic Mass Loss and the Outcome of the Common Envelope Phase of Binary Evolution will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-344830