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What the Awkward Relatives Tell Us about Planetary Nebulae Hosting Binary Systems

Published online by Cambridge University Press:  15 December 2006

Adam Frankowski
Affiliation:
Institut d'Astronomie et d'Astrophysique, Univ. Libre de Bruxelles email: adamf@astro.ulb.ac.be
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Abstract

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Relatives to Planetary Nebulae, such as barium stars or symbiotic systems, can shed light on the connection between Planetary Nebulae and binarity. Because of the observational selection effects against direct spectroscopic detection of binary PNe cores with orbital periods longer than a few dozen days, at present these “awkward relatives” are a critical source of our knowledge about the binary PNe population at longer periods. Below a few examples are discussed, posing constraints on the attempts to model nebula ejection process in a binary.

Type
Contributed Papers
Copyright
© 2006 International Astronomical Union