Estimating the binary fraction of planetary nebulae central stars

D. Douchin, O. De Marco, D. J. Frew, G. H. Jacoby, J. C. Passy, T. Hillwig, S. B. Howell, H. Bond, A. Peyaud, A. Zijlstra, R. Napiwotzki, G. Jasniewicz, Q. Parker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

During the past 20 years, the idea that non-spherical planetary nebulae might need a binary or planetary interaction to be shaped was discussed by various authors. It is now generally agreed that the varied morphologies of planetary nebulae cannot be fully explained solely by single star evolution. Observationally, more binary central stars of planetary nebulae have been discovered, opening new possibilities to understand the connections between binarity and morphology. So far, ≃45 binary central stars of planetary nebulae have been detected, most being close systems detected via flux variability. In order to determine the PN binary fraction, one needs a method that can detect wider binaries. We present here recent results concentrating on binary infrared excess observations aimed at detecting binaries of any separation.

Original languageEnglish (US)
Title of host publicationPlanetary Nebulae
Subtitle of host publicationAn Eye to the Future
Pages346-347
Number of pages2
EditionS283
DOIs
StatePublished - Jul 2011

Publication series

NameProceedings of the International Astronomical Union
NumberS283
Volume7
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

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