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COMMON ENVELOPE SIMULATIONS

Work in progress

CE with low-mass companions
- More work to constrain the origin of the WD 1856+534 system
  - We are now using MESA models to constrain our model
  - For a given WD mass, what scenario is possible?
    - Mass of companion — planet, brown dwarf, or low-mass M-dwarf?
      - How common would BDs and low-mass M-dwarfs be? Soszy\'{n}ski+2021
        
        Simulations that could help to understand this:
        Chen et al. 2017
        Liu et al. 2017
        Saladino, Pols & Abate 2019
    - Did WD 1856+534 b play a role in ejecting the envelope or was it passive?
    - Did WD 1856+534 b get engulfed during the plunge-in of planet 1 or after the tidal disruption of planet 1?

Evolved binary runs planned/ongoing

Run	Run ID	Progress	Remaining cost	Potential impact	Energy conservation
EOS+CE (RGB)	248,252,253	runs but hangs	medium	high
RLOF+CE (RGB)	195	ran up to 47 d	medium	medium	?
RLOF+CE (AGB)	264,265,266	runs but hangs	high	medium
CE equal mass particles (AGB)	263	ran up to 100 d	low	medium	?
CE low mass companion (AGB)	259	ran up to 250 d	none	high	4% increase
CE high resolution (AGB)	N/A	not started	high	high	N/A
Wind+accretion with low mass companion	N/A	not started	low?	medium	Z.Chen+2017 setup

Posted: 4 years ago
Author: Luke
Categories: (none)

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