Winds and shells around low-mass supergiants

  • A. K. Dupree
  • H. E. Bond
Re-examining the Corona/Wind Dividing Line
Part of the Lecture Notes in Physics book series (LNP, volume 291)


Chromospheric Ca II and Mg II emission in two high latitude supergiant stars (HR 4912 and HD 161796) demonstrates the presence of chromospheres in evolved metal deficient populations. Spectroscopic evidence for circumstellar material around these stars suggests they have lost mass and belong to a much older population of low-mass stars evolving off the tip of the asymptotic giant branch toward the regime of central stars of planetary nebulae.


Central Star Planetary Nebula Stellar Disk Asymptotic Giant Branch Target Star 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Verlag 1987

Authors and Affiliations

  • A. K. Dupree
    • 1
  • H. E. Bond
    • 2
  1. 1.Harvard-Smithsonian Center for AstrophysicsCambridge
  2. 2.Space Telescope Science InstituteBaltimore

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