Asymmetric Mass-Loss on the AGB: Examples from IRAS Data

  • R. Weinberger
  • B. Aryal
Part of the Astrophysics and Space Science Library book series (ASSL, volume 283)


A wide-angle search for extended structures (arcs, filaments, cavities etc.) around ca. 400 Galactic planetary nebulae on IRAS SkyView maps revealed several candidates. Some of these dust structures can hardly be explained by chance superpositions of otherwise unrelated objects. They show clear signs of bi- or quadru-polar shape and will, due to their huge dimensions, probably have started to form already in the AGB phase. If so, then the mass-loss in the AGB phase is not spherically symmetric in a number of cases


AGB stars asymmetrical mass-loss IRAS data 


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Copyright information

© Springer Science+Business Media Dordrecht 2003

Authors and Affiliations

  • R. Weinberger
  • B. Aryal
    • 1
  1. 1.Institut für AstrophysikUniversität InnsbruckInnsbruckAustria

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