The 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
Published July 19, 2016 | Version v1
Poster Open

Determining the stellar initial mass by means of the 17O/18O ratio on the AGB

Authors/Creators

  • 1. Institute of Astronomy, KU Leuven
  • 2. Onsala Space Observatory, Dept. of Earth and Space Sciences, Chalmers University of Technology
  • 3. Astronomical Institute Anton Pannekoek, University of Amsterdam
  • 4. Monash Centre for Astrophysics, School of Physics & Astronomy, Monash University
  • 5. NASA Goddard Space Flight Center, Astrochemistry Laboratory
  • 6. Department of Physics and Astronomy, Uppsala University
  • 7. Argelander-Institut fur Astronomie, University of Bonn

Contributors

  • 1. Uppsala University, University of North Georgia

Description

This poster presents newly obtained circumstellar 12C17O and 12C18O line observations, from which the line intensity are then related directly to the 17O/18O surface abundance ratio for a sample of nine AGB stars covering the three spectral types (). These ratios are evaluated in relation to a fundamental stellar evolution parameters: the stellar initial mass. The 17O/18O ratio is shown to function as an effective method of determining the initial stellar mass. Through comparison with predictions by stellar evolution models, accurate initial mass estimates are calculated for all nine sources. 

Notes

Poster #219

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Additional details

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