| An interacting binary system powers precessing outflows of an evolved star. | |
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MedLine Citation:
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PMID: 23139326 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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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. |
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Authors:
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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:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Science (New York, N.Y.) Volume: 338 ISSN: 1095-9203 ISO Abbreviation: Science Publication Date: 2012 Nov |
Date Detail:
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Created Date: 2012-11-09 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0404511 Medline TA: Science Country: United States |
Other Details:
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Languages: eng Pagination: 773-5 Citation Subset: IM |
Affiliation:
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European Southern Observatory (ESO), Casilla 19001, Santiago, Chile. hboffin@eso.org |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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