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Measurements of 3He in Galactic HII regions and planetary nebulae

Published online by Cambridge University Press:  23 April 2010

T. M. Bania ,
R. T. Rood  and
D. S. Balser
T. M. Bania
Affiliation:
Department of Astronomy, Boston University, 725 Commonwealth Ave., Boston, MA 02215, USA email: bania@bu.edu
R. T. Rood
Affiliation:
Astronomy Department, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904, USA email: rtr@virginia.edu
D. S. Balser
Affiliation:
National Radio Astronomy Observatory, 520 Edgemont Rd., Charlottesville, VA 22903 email: dbalser@nrao.edu
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Abstract

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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.

Keywords

Cosmology: cosmological parametersThe Galaxy: abundancesevolutionISM: abundancesevolutionHII regionsStars: AGBpost-AGB
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S268: Light Elements in the Universe , November 2009 , pp. 81 - 90
Copyright
Copyright © International Astronomical Union 2010

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