Common Envelope Shaping of Planetary Nebulae. III. The Launching of Jets in Proto-Planetary Nebulae
Abstract
We compute successfully the launching of two magnetic winds from two circumbinary disks formed after a common envelope event. The launching is produced by the increase of magnetic pressure due to the collapse of the disks. The collapse is due to internal torques produced by a weak poloidal magnetic field. The first wind can be described as a wide jet, with an average mass-loss rate of ~1.3 × 10-7 M⊙ yr-1 and a maximum radial velocity of ~230 km s-1. The outflow has a half-opening angle of ~20°. Narrow jets are also formed intermittently with velocities up to 3000 km s-1, with mass-loss rates of ~6 × 10-12 M⊙ yr-1 during short periods of time. The second wind can be described as a wide X-wind, with an average mass-loss rate of ~1.68 × 10-7 M⊙ yr-1 and a velocity of ~30 km s-1. A narrow jet is also formed with a velocity of 250 km s-1 and a mass-loss rate of ~10-12 M⊙ yr-1. The computed jets are used to provide inflow boundary conditions for simulations of proto-planetary nebulae. The wide jet evolves into a molecular collimated outflow within a few astronomical units, producing proto-planetary nebulae with bipolar, elongated shapes, whose kinetic energies reach ~4 × 1045 erg at 1000 yr. Similarities with observed features in W43A, OH 231.8+4.2, and Hen 3-1475 are discussed. The computed wide X-wind produces proto-planetary nebulae with slower expansion velocities, bipolar and elliptical shapes, and possible starfish-type and quadrupolar morphology.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- June 2021
- DOI:
- 10.3847/1538-4357/abfc4e
- arXiv:
- arXiv:2104.12831
- Bibcode:
- 2021ApJ...914..111G
- Keywords:
-
- Protoplanetary nebulae;
- Planetary nebulae;
- Stellar evolution;
- Asymptotic giant branch stars;
- Common envelope binary stars;
- Post-asymptotic giant branch stars;
- 1301;
- 1249;
- 1599;
- 2100;
- 2156;
- 2121;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 35 pages, 17 figures, accepted by the Astrophysical Journal