Document Detail

An interacting binary system powers precessing outflows of an evolved star.
MedLine Citation:
PMID:  23139326     Owner:  NLM     Status:  In-Process    
Stars are generally spherical, yet their gaseous envelopes often appear nonspherical when ejected near the end of their lives. This quirk is most notable during the planetary nebula phase, when these envelopes become ionized. Interactions among stars in a binary system are suspected to cause the asymmetry. In particular, a precessing accretion disk around a companion is believed to launch point-symmetric jets, as seen in the prototype Fleming 1. Our finding of a post-common-envelope binary nucleus in Fleming 1 confirms that this scenario is highly favorable. Similar binary interactions are therefore likely to explain these kinds of outflows in a large variety of systems.
Henri M J Boffin; Brent Miszalski; Thomas Rauch; David Jones; Romano L M Corradi; Ralf Napiwotzki; Avril C Day-Jones; Joachim Köppen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  338     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  773-5     Citation Subset:  IM    
European Southern Observatory (ESO), Casilla 19001, Santiago, Chile.
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