Keywords
Planetary Nebulae: Halos
Planetary Nebulae: Kinematics
Planetary Nebulae: Stellar Winds
Planetary Nebulae: Gas Dynamics
PLANETARY NEBULAE: INDIVIDUAL (NGC 6543
NGC 6826
NGC 7662)
ISM: KINEMATICS AND DYNAMICS
HYDRODYNAMICS
SHOCK WAVES
STARS: MASS LOSS
Planetary Nebulae: Kinematics
Planetary Nebulae: Stellar Winds
Planetary Nebulae: Gas Dynamics
PLANETARY NEBULAE: INDIVIDUAL (NGC 6543
NGC 6826
NGC 7662)
ISM: KINEMATICS AND DYNAMICS
HYDRODYNAMICS
SHOCK WAVES
STARS: MASS LOSS
How to Cite
Hot, fast planetary nebula haloes: a natural consequence of clumpy cores. (1994). Revista Mexicana De Astronomía Y Astrofísica, 29(1), 84-87. https://astronomia.unam.mx/journals/rmxaa/article/view/1994rmxaa..29...84a
Abstract
We present a model in which the fast stellar wind from the central star of a planetary nebula picks up mass as it flows through a clumpy core region that is the result of the slower, denser "superwind" and red giant wind phases. This mass loading results in a transonic flow leaving the core region. The shocking of this gas around clumps and filaments in the halo would produce the hot (T > 15000 K), dynamically inert emission that has been observed in several faint, giant planetary nebula haloes. Also, if this mass loaded flow dominates the emission in the halo, it could be an explanation for the planetary nebulae in which the halo has been observed to be expanding faster than the core.Similar Articles
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