You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Light-Element Abundances in Population II Dwarfs
Sean G. Ryan
Publications of the Astronomical Society of the Pacific
Vol. 104, No. 679 (1992 September), pp. 805-808
Published by: Astronomical Society of the Pacific
Stable URL: http://www.jstor.org/stable/40679930
Page Count: 4
You can always find the topics here!Topics: Population II stars, Lithium, Beryllium, Boron, Stars, Subgiant stars, Spallation, Light elements, Metal abundance, Stellar evolution
Were these topics helpful?See something inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
This paper reviews the abundances of the light elements lithium, beryllium, and boron in main-sequence and subgiant, Population II stars. Li is important to cosmology because it is synthesized in the Big Bang, but is also used to study stellar structure. Beryllium is useful for studying galactic chemical evolution because its formation in the interstellar medium involves different physics to stellar nucleosynthesis, and it thus provides independent data on the evolution of the halo. Some (though not all) inhomogeneous Big Bang nucleosynthesis codes predict a significant primordial component to this element, so its observed abundance may constrain such models. Boron, observations of which became feasible with the operation of the Hubble Space Telescope, provides complementary data to Be, helping check the element ratios predicted by calculations of spallation reactions in the interstellar medium, and will indicate whether the observed Be abundance has an excess over the expected spallation component, indicating a possible primordial component.
Publications of the Astronomical Society of the Pacific © 1992 The University of Chicago Press