Rotating Stars and the Formation of Bipolar Planetary Nebulae II: Tidal Spin-up

Abstract

We present new binary stellar evolution models that include the effects of tidal forces, rotation, and magnetic torques with the goal of testing Planetary Nebulae (PNe) shaping via binary interaction. We explore whether tidal interaction with a companion can spin up the AGB envelope. To do so we have selected binary systems with main sequence masses of 2.5 \Mo and of 0.8 \Mo and evolve them allowing initial separations of 5, 6, 7, and 8 AU. The binary stellar evolution models have been computed all the way to the PNe formation phase or until Roche lobe overflow (RLOF) is reached, whatever happens first. We show that with initial separations of 7 and 8 AU, the binary avoids entering into RLOF, and the AGB star reaches moderate rotational velocities at the surface ($\sim 3.5$ and $\sim 2$ \kms respectively) during the inter-pulse phases, but after the thermal pulses it drops to a final rotational velocity of only $\sim 0.03$ \kms. For the closest binary separations explored, 5 and 6 AU, the AGB star reaches rotational velocities of $\sim 6$ and $\sim 4$ \kms respectively when the RLOF is initiated. We conclude that the detached binary models that avoid entering the RLOF phase during the AGB will not shape bipolar PNe, since the acquired angular momentum is lost via the wind during the last two thermal pulses. This study rules out tidal spin-up in non-contact binaries as a sufficient condition to form bipolar PNe.

25 pages, 3 figures, accepted by The Astrophysical Journal

References in corpus (9)

• Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
• Low-Mass Binary Induced Outflows from Asymptotic Giant Branch Stars
• Cool and Luminous Transients from Mass-Losing Binary Stars
• The primordial binary population II: Recovering the binary population for intermediate mass stars in Sco OB2
• Gamma-Ray Bursts from tidally spun-up Wolf-Rayet stars?
• Planetary Nebula Abundances and Morphology: Probing the Chemical Evolution of the Milky Way
• Hydrodynamic Simulations of the Interaction between an AGB Star and a Main Sequence Companion in Eccentric Orbits
• Explosion and nucleosynthesis of low redshift pair instability supernovae
• Rotational velocities of the giants in symbiotic stars: II. Are S-type symbiotics synchronized?

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