CaltechAUTHORS
Published November 21, 2001 | Version Published
Book Section - Chapter Open

Galactic Abundances: Report of Working Group 3

Creators

  • 1. ROR icon Max Planck Institute for Extraterrestrial Physics
  • 2. ROR icon Max Planck Institute for Solar System Research
  • 3. ROR icon California Institute of Technology
  • 4. ROR icon Goddard Space Flight Center
  • 5. ROR icon University of Bern
  • 6. ROR icon Whitman College
  • 7. ROR icon University of Basel
  • 8. ROR icon Jet Propulsion Lab
  • 9. ROR icon Institute of Astronomy and National Astronomical Observatory
  • 10. ROR icon Kiel University
  • 11. ROR icon United States Naval Research Laboratory

Contributors

Abstract

We summarize the various methods and their limitations and strengths to derive galactic abundances from in-situ and remote-sensing measurements, both from ground-based observations and from instruments in space. Because galactic abundances evolve in time and space it is important to obtain information with a variety of different methods covering different regions from the Very Local Insterstellar Medium (VLISM) to the distant galaxy, and different times throughout the evolution of the galaxy. We discuss the study of the present-day VLISM with neutral gas, pickup ions, and Anomalous Cosmic Rays, the study of the local interstellar medium (ISM) at distances <1.5 kpc utilizing absorption line measurements in H I clouds, and the study of galactic cosmic rays, sampling contemporary (~15 Myr) sources in the local ISM within a few kiloparsec of the solar system. Solar system abundances, derived from solar abundances and meteorite studies are discussed in several other chapters of this volume. They provide samples of matter from the ISM from the time of solar system format ion, about 4.5 Gyr ago. The evolution of galactic abundances on longer time scales is discussed in the context of nuclear synthesis in the various contributing stellar objects.

Additional Information

© 2001 American Institute of Physics. Issue Date: 21 November 2001. We thank the organizers of the SOHO/ACE workshop on "Solar and Galactic Composition" for their hospitality.

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Eprint ID
27845
Resolver ID
CaltechAUTHORS:20111118-075529994

Dates

Created
2011-11-21
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Updated
2021-11-09
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Caltech Custom Metadata

Caltech groups
Space Radiation Laboratory , Physics Department
Series Name
AIP Conference Proceedings
Series Volume or Issue Number
598
Other Numbering System Name
Space Radiation Laboratory
Other Numbering System Identifier
2001-57