Truncated Collimated Flows in Abell 30, Abell 78 and the Honeycomb Nebula

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 tha...

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Bibliographic Details
Published in:Astrophysics and space science 2000-07, Vol.272 (1-3), p.217-220
Main Authors: Meaburn, J, Redman, Mp, Bryce, M, López, Ja, Al-mostafa, Za, Dyson, Je
Format: Article
Language:English
Subjects:
Astrophysics
Boundary layers
Nebulae
Online Access:Get full text
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Summary: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.[PUBLICATION ABSTRACT]
ISSN:0004-640X
1572-946X
DOI:10.1023/A:1002692312742