Truncated Collimated Flows in Abell 30, Abell 78 and the Honeycomb Nebula |
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| Authors: | J Meaburn MP Redman M Bryce JA López ZA Al-Mostafa JE Dyson |
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| Institution: | (1) Department of Physics & Astronomy, Jodrell Bank Observatory, University of Manchester, Macclesfield, UK;(2) Instituto de Astronomía, UNAM, Ensenda, Mexico;(3) Institute of Astronomical and Geophysical Research, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia;(4) Department of Physics and Astronomy, University of Leeds, Leeds, UK |
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| Abstract: | Localised collimated flows of ionized gas are found in two hydrogen deficient planetary nebulae, Abell 30 and Abell 78 as
well as in the Honeycomb complex of interlocking shells in halo of 30 Dor in the Large Magellanic Cloud. One common feature
of these flows, in seemingly disparate objects, is that they all terminate at around the same difference in radial velocity
(with respect to that of the systemic radial velocity). A possible explanation involves high speed flows being decelerated
by mass-loading. In Abell 30 and 78, mass is injected by clumps embedded in the fast wind. In the Honeycomb nebula, a supernova
blast wave has pierced an old dense shell wall which adds mass to the post-shock flow via a boundary layer.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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