Measurements of 3He in Galactic HII regions and planetary nebulae
Abstract
The cosmic abundance of the 3He isotope has important implications for many fields of astrophysics. We are using the 8.665 GHz hyperfine transition of 3He+ to determine the 3He/H abundance in Milky Way H ii regions and planetary nebulae. Here we review the 30 year history of our 3He program, report on its current status, and describe our future plans.
- Publication:
-
Light Elements in the Universe
- Pub Date:
- April 2010
- DOI:
- Bibcode:
- 2010IAUS..268...81B
- Keywords:
-
- Cosmology: cosmological parameters;
- The Galaxy: abundances;
- evolution;
- ISM: abundances;
- evolution;
- HII regions;
- Stars: AGB;
- post-AGB