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arXiv · astro-ph/0209600

Stellar wind bubbles around WR and [WR] stars

Garrelt Mellema·Peter Lundqvist
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Abstract

We study the dynamics of stellar wind bubbles around hydrogen-deficient stars using numerical simulations with time- and ion dependent cooling. We consider two types of hydrogen-deficient stars, massive WR stars, producing Ring Nebulae, and low mass [WR] stars, producing Planetary Nebulae. We show that for the Planetary Nebulae, the different cooling properties of the hydrogen-deficient wind lead to a later transition from momentum- to energy-driven flow, which could explain the observed turbulence of these nebulae. We find that Ring Nebulae should all be energy-driven, and show how comparing the bubble's momentum and kinetic energy to the input wind momentum and kinetic energy, can give misleading information about the dynamics of the bubble.

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Garrelt Mellema, Peter Lundqvist. 2002-09-28. Stellar wind bubbles around WR and [WR] stars. https://doi.org/10.1051/0004-6361%3A20021164

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