Determining the Stellar Initial Mass by Means of the 17O/18O Ratio on the AGB
Abstract
This poster presentsnewly obtainedcircumstellar 12C17O and 12C18O line observations, from which theline intensity are then related directly tothe 17O/18O surface abundance ratiofor 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. The17O/18O ratio is shown to function as an effective method of determining the initial stellar mass. Through comparison with predictions bystellar evolution models, accurate initial mass estimates are calculated for all nine sources.
- Publication:
-
19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS19)
- Pub Date:
- July 2016
- DOI:
- 10.5281/zenodo.58208
- Bibcode:
- 2016csss.confE..80D
- Keywords:
-
- AGB stars;
- oxygen isotopes;
- initial mass;
- Zenodo community cs19