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

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding 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
Title of host publicationPlanetary nebulae
Subtitle of host publicationan eye to the future
EditorsArturo Manchado, Letizia Stanghellini, Detlef Schönberner
Place of PublicationCambridge
PublisherCambridge University Press
Pages346-347
Number of pages2
ISBN (Print)9781107019836
DOIs
Publication statusPublished - Jul 2011
Event283rd Symposium of the International Astronomical Union - Perto de la Cruz, Spain
Duration: 25 Jul 201129 Jul 2011

Publication series

NameProceedings of the International Astronomical Union
NumberS283
Volume7
ISSN (Print)17439213
ISSN (Electronic)17439221

Conference

Conference283rd Symposium of the International Astronomical Union
CountrySpain
CityPerto de la Cruz
Period25/07/1129/07/11

Keywords

  • techniques: radial velocities
  • techniques: photometric
  • binaries: general
  • stars: statistics
  • planetary nebulae: general

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